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Service Manual: NAD series (A230/A231/A232

1. MSU MB CN351 MB CN352 CN208 I0B i gt A232 Point to Point Diagram 1 2 eus Er EUM 1 X _ gt 1 35V 1 GND Ai N C L2
2. CN351 CN321 CN323 CN333 T 3 5 T T MT T z vC 2 2 3 GC Vecsey s PORTU 3 E VCC Vecsey 4 3 Pons 34 d Ce SV PORE FORI VSE 5 s f roar rar 5 7 NC NC 7 7 P6ns Paas 7 5 NC NC PGR Cer 9 PORE POM 5 TOTS oF Tt Eni TT Pa 32 PGA ND WT ND 4 15 18 15 2 15 15 cand COMI 16 16 Peor Peor 2 16 17 Penre FGDI2 217 1 ND com 18 e 18 19 19 T lt Poo Peon 13 20 CGND 20 2 2 OXRWLSYC AWLSYO ai Pans PeDe 27 ND COMI E 25 AWFGT 3 23 PDE reo 2 CON com 22 24 Peor 2 25 NC NC 25 2 Peo
3. Fig A Fig DOU wee e P il E H NEN gt o eT gs die 52 8 e ee LT ee jee eee ee Sub Scan Direction Main Scan Direction gt ON tun OFF Laser Scan 1 Pixel A231D529 WMF The FCI chip on the LDDR performs image smoothing only in binary picture processed image with Letter mode Usually binary picture processing generates jagged edges on characters as shown in the above left illustration The FCI reduces jagged edges of characters using the image smoothing process Whether or not the object pixel undergoes smoothing depends on the surrounding image data The smoothing process for the object pixel is done by changing the laser pulse positioning and the laser power LASER EXPOSURE 26 March 1998 2 3 LASER EXPOSURE 2 3 1 OVERVIEW This machine uses two laser diodes to produce electrostatic images on an OPC drum The laser diode unit converts image data from the BICU board into laser pulses and the optical components direct these pulses to the drum To produce a high quality copy image these are 256 gradations for the laser pulses controlled through power modulation 32 levels and pulse width modulation 8 levels Exposure of the drum by the laser beam creates the latent image The
4. 0 1 3 7 Zero Cross Signal Detected Not detected Registration 6 Transfer Belt Unit H P Not at home At home amp others Sensor position position 5 Exhaust Fan Lock Signal Not locked Locked 4 Cooling Fan Lock Signal Not locked Locked 3 Main Motor Lock Signal Not locked Locked 2 Toner Overflow Sensor Tank not full Tank Full 1 Cover Open Cover closed Cover opened 0 Registration Sensor Paper detected Paper not detected 4 7 Not used By pass 6 Paper End Sensor Paper detected Paper not detected 5 Not used 4 Paper Size Sensor 4 See table 1 3 Paper Size Sensor 3 2 Paper Size Sensor 2 1 Paper Size Sensor 1 0 Unit Set Signal Connected Not connected 5 7 Not used Bridge Unit 6 Unit Set Signal Connected Not connected 5 Paper Sensor Paper detected Paper not Op Printer Controller detected 4 Relay Sensor Paper not Paper detected detected 3 Exit Sensor Paper not Paper detected detected 2 Left Cover Switch Switch pressed Switch not cover closed pressed 1 Right Cover Switch Switch pressed Switch not cover closed pressed 0 Tray Exit Unit Switch Switch pressed Switch not cover closed pressed 6 7 Not used Unit Set 6 F gate Signal Active Not active 5 Height Sensor At feed height Not at feed Op Printer Controller position height position 4 Paper Exit Sensor Paper detected Paper not detected 3 Fusing Unit Detected Not detected 2 Total Counter Not detected Detect
5. Preventive Maintenance A230 A231 A232 SCANNER OPTICS Reflector Optics cloth 1st Mirror C e C Optics cloth 2nd Mirror C C C Optics cloth 3rd Mirror C C C Optics cloth Scanner Guide Rails Do not use alcohol Platen Sheet Cover Replace the platen sheet if necessary Dry cloth or alcohol Exposure Glass Dry cloth or alcohol Toner Shield Glass Optics cloth APS Sensor Dry cloth or alcohol AROUND THE DRUM Charge Roller R R R Charge Roller R R R Cleaning Pad Quenching Lamp Dry cloth Pick off Pawls R R R Spur Dry cloth or alcohol ID Sensor Perform the ID sensor initial setting SP3 001 2 after cleaning blower brush CLEANING UNIT Drum Cleaning Blade R R R Cleaning Entrance Blower brush Replace if Seal necessary Side Seal DEVELOPMENT UNIT Development Drive Replace every 5 7508 Gears Development Filter R Developer R Entrance Seal Side Seal PAPER FEED Registration Roller Clean with water or alcohol PM TABLE 26 March 1998 Ribs A230 A231 A232 EM 50 300K 450K NOTE Paper Feed Roller R R R Check the counter value for Separation Roller R R R 2
6. exce od rtr 1 2 Rear Joint Bracket assa 1 3 Entrance Guid Plate iaria ie i oeoa E oea io ant 1 E g A oos ois oio eb A 1 5 Exit Guide Mylar A229 copier only 1 6 9hift Tray 1 7 Staple Position Decal auo V MES 1 B 256r 6W EMIKO A N E E nda 2 9 Screw MAG ists 4 10 SChOW MX Sitat cuna tta Ven A 4 LUE SITIS sce cei ee ed EE 1 12 Upper Grounding Plate 2 22 1 13 Lower Grounding Plate 2 14 17 0444 1 15 Installation PIOGGdle o HR RUE 1 26 March 1998 3 000 SHEET FINISHER INSTALLATION 3 13 2 INSTALLATION PROCEDURE k 5 E A2311516 WMF NCAUTION Unplug the main machine power cord before starting the following procedure NOTE The bridge unit A688 and paper tray unit A682 must be installed before installing this finisher 1 Unpack the finisher and remove the tapes 3 49 3 000 SHEET FINISHER INSTALLATION 26 March 1998 A2301754 WMF A2301755 WMF Install the front joint bracket A and rear joint bracket B 2 screws each Attach the upper grounding plate C 1 screw Peel off the backing of the double sided tape that is attached to
7. Mode No cani 615553 Function Settings 4 903 24 MTF Filter Selects the MTF strength for photo 0 x 0 25 Strength Level mode using greyscale mode if MTF 1 x0 5 Photo mode is enabled for this mode with SP 4 2 1 904 3 3 2 4 x4 25 MTF Filter Selects the MTF strength for 0 x 0 25 Strength Level text photo mode using greyscale 1 x 0 5 Text Photo mode mode 2 1 3 2 4 4 26 MTF Filter Selects the MTF strength for low 0 x 0 25 Strength Level density original mode using 1 x 0 5 Low Density greyscale mode 2 x 1 Original mode 3 2 4 4 27 MTF Filter Selects the MTF strength for copied 0 x 0 25 Strength Level original mode using greyscale mode 1 0 5 Copied Original 2 x1 mode 3 x2 4 x 4 28 Independent Dot Selects the independent dot erase 0 15 Erase Level level for letter mode with grayscale 1 step Letter mode processing mode 11 Grayscale Refer to Detailed Section Processing Description Independent Dot Erase for details 29 Independent Dot Selects the independent dot erase 0 15 Erase Level level for letter mode with binary 1 step Letter mode processing mode 13 Binary Refer to Detailed Sectional Processing Description Independent Dot Erase for details 30 Independent Dot Selects the independent dot erase 0 15 Erase Level level for text photo mode 1 step Text Photo mode Refer to Detailed Section 0 Disabled Greyscale and D
8. Mode No ere Class 3 Function Settings 4 911 8 HDD Model Name Displays the model name of the Display HDD If the hard disk is not installed Not Connected is displayed 5 001 All Indicators On Turns on all indicators on the M C Stop operation panel 1 Start Press 1 to check Press to exit this SP mode 5 009 Language Selects the language for the display Selection After selecting the language turn the main power switch off and on 5 024 mm inch Display Selects what unit is used 0 mm Selection 1 inch After selecting the unit turn the main power switch off and on 5 104 A3 11 x17 Specifies whether the counter is 0 No Double Count doubled for A3 11 x17 paper 1 Yes If 1 is selected the total counter and the current user code counter count up twice when A3 11 x17 paper is used 5 106 ADS Level Selects the image density level that 1 6 Selection is used in ADS mode 1 notch step 3 5 112 Non standard Selects whether a non standard 0 No Paper Size paper size can be input or not 1 Yes If 1 is selected the customer will be able to input a non standard paper size using a UP mode 5 113 Optional Counter This SP is for Japan only Do not 0 6 change the value 1 step 0 5 115 Duplex Punch Selects whether or not the image on 0 Yes Hole Margin the back of duplex copies shifts for 1 No making the punch holes 5 118 Disable Copying Selects whether the copy function is 0 No
9. 18 WOM fs 16 NORDYESY SY 16 15 CP 16 Teor 02 E 1 P 5 3 NOVPE E P LE A CPATE T 1 cr 19 T cowi ao 19 272 5 25 201 095 CPAS 21 2 20 NC KEY 25 HER 1 T PM PM DH 1 NC DAR T 2 P P PRI TONT GND HDD 25 2 5 CPAS 25 2 cex 25 25 prow Dow 28 TPR 2 2 cow GND 2 27 CPAT 25 25 CPAT 25 25 DIOR Don 5 EE P 3 3 WT WT 3 e COM GND 3 mH TPR 27 27 ar 27 NC ooy 27 25 5 CPAT 28 25 2 a gt TPAD 29 E EE 29 NC DMACK 25 0 5 Do PDU E ER CPOs 0 cow ND T 31 01 CPI 2 31 at 4 3 31 7900 TG i aj oo 32 a orbs CPOs z NC 2016 32 3S RICCS Roos o as 0902 3 35 bat 35 Flash Memory GND CONT d eo Bt d NC 21 38 GND COM E DAD DA gt 3 TT BE 36 E 357 5 35 Dno Daa 35 97 37 EU EU 37 371 050 E IU CPDI2 35 ORAM ORAMOSS 38 8 esT E ES SL i CPDIS gt S wo WRD 2 DIS S 30 5 oa 40 2 40 40 cowr ND a0 Dis eos 31 onowcs OROMCS aT E 357 Wee aT 42 ORCS 47 32 OMT a 32 TY Vee 32 NC NC E E WT s E COM Na a NOSFROMCS FROMCS 48 BORD 1 4 3i RC NC 35 NOSSRAMCS NC 35 35
10. ee ness OF 2 3 5 2 Sensor O 5 5V Motor B 24 gt 0 24 AT J 6 1 24V 24 O Dq CN325 3 CN135 4 GND2 S50 2 5 O W5 Stack Feed out Belt HP Sensor 24V 24 0 Niet O Belt HP E Shift Motor 1 6 2 1 i Sensor O 5 5V Shift Motor W24 O O K CN330 1 CN135 9 CN160 3 CN235 2 Jogger EE 5 5V Shift Tray Lift Motor W24 O Shift Tray 2 10 1 i Unit Paper S2 a na V5 Jogger Unit Paper Sensor 9 Shift Tray Lift Motor W24 O 3 O Lift Motor 3 11 gt 0 GND2 Shift Tray Shift Tray Upper Limit Switch W24 O Upper CN350 3 CN135 12 D b NE nT FS 6 ite S 13 Fence HP S4 45 Rear Fence HP Sensor Switch 1 14 CN170 1 CN240 2 it Gui Sensor O 5 5V OH 24 2410 O 2 2 1 ate Exit Guide Plate Motor W24 O O Mot Right Cover CN110 1 p 9 O 24 24V Safety 2 CN170 3 CN245 2 Exit 24 Right Cover Safety Switch A 24 240 Switch SW2 4 1 Gate Junction Gate Solenoid W24 O Sol id N CN210 7 CN120 1 O 24 24V CN250 2 ositionin Gs po S Q 24v jo ENTS 4 4 TE 6 1 Feed out E O W24 0 24 Motor A Positioning Roller Solenoid W24 O O Solenoid Motor Ces eue O W24 0 24 Motor A IU RR E 24 0 24 Motor B 24v 24 eq 0071 o d ooo 27 9924
11. Possible causes e BICU board defective e Poor connection of the fax controller or printer controller e Fax controller or printer controller defective 7 3 SERVICE CALL CONDITIONS 26 March 1998 322 1st laser synchronization error Definition B The 1st laser synchronization signal cannot be detected by the main scan synchronization detector board even if the laser diodes are activated Possible causes Poor connection between the laser synchronization detector board and the LD unit e Laser synchronization detector board out of position e Laser synchronization detector board defective e LD unit defective SC323 LD drive current over Definition B The LD drive board applies more than 110 mA to the LD Possible causes e LD unit defective not enough power due to aging e Poor connection between the LD unit and the BICU board e BICU defective us SC326 2nd laser synchronization error Definition B The 2nd laser synchronization signal cannot be detected by the main scan synchronization detector board even if the laser diodes are activated Possible causes Poor connection between the laser synchronization detector board and the LD unit e Laser synchronization detector board out of position e Laser synchronization detector board defective e LD unit defective 327 LD unit home position error 1 Definition B The LD unit home position sensor d
12. lt mu A2 lt JUpperPaperSize 4 AC Line lt JUpper Paper Size 3 CN SORE ay CNSOS BICU dH HDT 4 35 A4 lt XARKD2 i ui ter Size PCLine for 21 SBU CN313 BICU CN308 5 HDT 5 5VE lt XARKD 0 lt Upper Paper Size Puls 1 12 gt LDB for CN401 LDB 6 HOT 6 5VE A6 GND lt Upper Paper 2 12 gt T GND 1 5 8i SVE 1 GND HDT 7 gt Upper Paper Amou Signal Direction 3 412V gt 2 XPOR gt 2 5 62 5VE 2 03 2 HDT 8 XWRSYNC gt AB lt Upper Paper Height Signal Direction 4 12 gt 3 GND 3 SVE 63 SD 4 gt 3 D4 gt 5 MSU HDT 9 gt A9 lt Ag Upper Relay Active High 5 5 gt 4 SIN gt 4 64 lt SD 5 gt 4 lt 05 gt 10 10 lt XCIS1 10 lt XARLSYC 10 lt Upper Paper End 9 6 5 gt 5 SVE 65 lt 506 gt 5 lt D gt 11 HDT 11 TXDI gt ATi lt XARLGT Ali lt Upper Paper Feed gt Active Low 5 7 25V gt 6 VDSDI 6 66 lt gt 8 lt D7 gt 12 i2 lt _RXDI 2 GND AT2 Upper Tray Lift Motor gt Voltage Ej 8 45V gt 7 GND 5 67 _ lt gt 7 lt GND gt 1 13 GND __ lt __ 413 J pper Tray Lift Motor Up gt 641444 CN503 9 lt SOUT 8 SCLK gt EJ 681 509 gt 8 lt A0 gt 14 14 GND GND Ata NG 1
13. port RERE SNO 0 j 5 5 PEEELT SEES 5 amp pbb ES 95240 S ot 5855885 1 1 25 25 3 8 2522838 T 289242 Paper Fi hi 3 t 25 5822 22 25 842504 2 apor ead 05285555 2502055 8 ontro 24VS 24 1 5 595255558 ESOS EPSPSS 8 9 5 y 95255555 F 389808 8 IOR PCRS 5 8 95225555 A Bid amp 5 5 PCB4 924 2 Feed ass 5 5588 9 5 8 5 5S S CN242 gt 8855 58 5 24VS 24 1 8 55 z a 25 B25 A1 B1 Lower Paper 2 gE 88 5 5 Feed 2 gt 5 5 2 gt d 205 5 gt CN243 zio 9828 58 Sas 45v is 1 E a 559 2 9 25 AD 296 399 ape 5 xa amp sho 54 E z Soe E 5 jaat ol Nn 5 2 84244 83022 8 A 2 a D 2 e B2 5 B3 CN708 CN711 CN713 CN712 CN710 cno Ba CN708 cN711 cN713 CN712 CN710 CN709 85 Cooling CN809 CN810 ver LCT 3 3 2 3 2 eene I 1 olo 212 5 amp Ss 3 2 m m ama i nim ma 4O Density Cooling Fan Junction Tray Tr Cooling io Exhaust Transfer Exit Duplex Gate ExitUnit Exi Fan Positioning Fan E l n JA y Paper Right Ke Image Tot
14. 2410 Q CN630 CN620 4__ 8 _ Opw24 50 24 Punch Motor B ASI 3 54 7 724 gt 0 24 Punch Motor 9 517 9 2 2 0 o Od O o R CN610 1 O Punch SYMBOL TABLE SEN WI Board DC Line PCB2 Pulse Signal S lt Q Signal Direction Main Board A High 1 Active Low Voltage z 3 4 5 6 7 8 9 10 11 12 13 14 3 000 SHEET FINISHER A697 ELECTRICAL COMPONENT LAYOUT Symbol Ne Description wo essipio Motors M4 17 Stapler 3 olenoids M6 24 StapeHammer 913 SOL1 4 Tray Junction Gate SOL2 tapler Junction Gate M8 2 ShiftTray Exit G13 SOL3 ositioning Roller M9 31 M3 M10 1 ShiftTray Lift PCB ain M11 6 Punch PCB2 unch Q4 1 9 Entrance 17 8 R2 j
15. Is the toner concentration still low No Yes No Is this the 4th Vtp detection Yes DEVELOPMENT Toner supply motor turns on for 10s Vt detection No Toner supply motor turns on for 2 s Has the motor turned on 8 times Clear the toner end near end condition and reset the value of K to 3 0 A231D539 WMF 2 45 a 2 oo an DEVELOPMENT 26 March 1998 If the front cover is opened and closed while a toner near end end condition exists the machine will attempt to recover using measurements from the TD sensor When the front cover is closed the toner supply motor turns on to supply toner The machine checks the TD sensor output 2 s after the main motor turns on This is called Vtp It is checked again every 1 s and these values are called Vip The machine detects the toner concentration using Vtref Vt 10 Vtp and Vtp If the toner concentration is still too low the toner supply motor turns on for another 10s Then the machine checks Vt If toner concentration is at the standard level the toner near end end condition is cancelled and is reset If toner concentration has not reached the standard level the toner supply motor rotates continuously until it does maximum motor on time is 16s 2 6 9 TONER SUPPLY IN ABNORMAL SENSOR CONDITIONS The TD sensor is checked every copy If the readings from the TD sensor become
16. Thermofuses TF1 15 Fusing Provides back up overheat protection in the fusing unit Counters CO1 Total Keeps track of the total number of prints made 2 option Used for control of authorized use If this feature is enabled for copying copying will be impossible until it is installed It can also be enabled for fax and printer modes separately Others CB1 Circuit Breaker 220 240V only Provides back up high current protection for electrical components LSD Laser Synchronization Detector Detects the laser beam at the start of the main scan 26 March 1998 DRIVE LAYOUT 1 7 DRIVE LAYOUT c o E gt ox og PCU Drive Transfer 4 Development A230V108 WMF 5 1 Scanner Drive Motor 5 Lower Paper Feed Clutch 2 Transfer Belt Clutch 6 Relay Clutch 3 Registration Clutch 7 Main Motor 4 Upper Paper Feed Clutch COPY PROCESS 26 March 1998 1 8 COPY PROCESS 1 8 1 OVERVIEW A230V101 WMF 1 EXPOSURE A xenon lamp exposes the original Light reflected from the original passes to the CCD where it is converted into an analog data signal This data is converted to a digital signal processed and stored in the memory At the time of printing the data is retrieved and sent to the laser diode For multi copy runs the original is scanned once only and stor
17. Oe Motor j Transport Motor B W24 0 24 i apse 560 1 CN250 3 Lrg sy Transport Moter B W24 0 24 __ 14 115 ut AS TARE as stan Sensor sear de 9 a seve p C20 24V B E41 N CN550 4 CN250 6 Feed out Motor A W24 0 24 1 aS Feed out 0 5 5V Feed out Motor A W24 20 24 Jo 2 Motel Position 52 DF Position Feed out Motor B W24 0 24 0 Be ae L Sensor 3 4 O0 GND2 Feed out Motor B W24 0 24 gt 2 L 480 1 CN280 3 15 Stamper Sol W24 O o Stamper M He S4 E 22 Original Stopper HP Sensor 24V 2410 19 Solenoid o 0 GND2 Transport 24 Transport Pick up 1 440 1 CN280 6 24V 24 d 1 25 ips A utc dg Sensor 3 O 0 GND2 CN260 1 580 2 Exit Exit Gate Sol 24 CN421 CN420 24V 241d a an 422 4 3 _ 1 200 6 Solenoid Ene oM aa ANNA a e S6 O A 5 Entrance Sensor Sensor le MENS GND2 Inverter Gate Sol 2410 DR CN570 2 2 24V 24 1o race CN501 500 49021 4 aa 6 5 Ragistaton c QS 2 204 Tas Regstalon Sensor 1810002301_ 042 a 4 dio GND2 Ready W5 gt ___ 2 1p Q CN541 540 542 1 3 CN240 3 dis sv BV 1510 CN503 2 Inverter 12 REC ME ae o 5 Inverter Sensor SADF W
18. ay oy A230R205 WMF 1 Remove the laser unit See Laser Unit 2 Remove the LD unit A 3 screws 1 connector NOTE When disconnecting the harness hold on to the LD unit 3 After replacing the LD unit perform SP 2 109 8 then the laser beam pitch adjustment see the following procedure 6 17 LASER UNIT 26 March 1998 Laser beam pitch adjustment There are two laser beam pitch adjustment procedures one for 400 dpi and one for 600 dpi These adjustments use the following SP modes e SP2 109 1 LD Beam Pitch Adjustment 400 dpi e SP2 109 2 LD Beam Pitch Adjustment 600 dpi SP2 109 3 LD Initial Setting 400 dpi 5 2 109 4 LD Initial Setting 600 dpi e SP2 902 2 no 12 IPU Test Pattern Cross Stitch 400 dpi e SP2 902 2 13 Test Pattern Cross Stitch 600 dpi Do SP 2 109 8 Input the value 144 into SP2 109 1 Perform SP2 109 3 Print the 400 dpi test pattern onto 11 x17 paper using SP2 902 1 12 See Service Tables Test Pattern Printing 5 Write the value of SP2 109 1 on the test pattern in this case 144 EM Change the value of SP2 109 1 and print another test pattern repeating steps 2 to 4 Print about 5 patterns with different values for SP2 109 1 e g 48 96 192 240 7 Check these test patterns If the laser beam pitch is not correct the image looks like a black vertical strip pattern NOTE As an exampl
19. oe CEA Speaker 28 COMI 25 G4IF 28 CPI CP 25 CIG4 TONT z cowi COMI 25 25 PAS NER RE E TPOS gt CPR E 282 007 eror 2 A PAS ce 23 29 CRDI 2 22 CRAS oe a0 CPOs 2 CPA at Croz at 2 27 7 cPbs CPOs EE PA eps CN331 33 CPDO CPDO 33 18 CPAT CPAT gt 18 a f Por 3 LEA 7 DBRXD 1 x co Som Debug Monitor LE 5 N x s 07 1 z 087 3 7 cowr com 37 aH 56 3247 1 38 1 05 D5 BE d Wir Wir 51 3 30 52s ES 30 mH 037 1 i NC NC E 17 02 02 210 32 S 357 32 E E E E 2 97 pos E WT gt CN332 45 COMT COMT 25 6 TOMT COMT 6 tcs 5 5 ASAP Monitor com 97 COM 4 s E E E 35 E E 291 127 45 2 30 NC NC 55 1 3227 EZ 1 COPIER A232 ELECTRICAL COMPONENTS Printed Circuit Boards ee metui Control Unit PCB6 9 SBU SensorBoard Unit B12 PCB7 7 SIB Scanner Interface B10 Board PCB8 Operation Panel PCB9 Lamp Stabilizer Sensors S4 5 OriginalLengtht 8 S5 6 OriginalLength2_ A7 512 30 LowerPaperHeight 06 10 LDDR Laser Diode Driver PCB11 54 SIFB Scanner Interface D7 Board Q6 Upper Relay
20. EM 80K 160K 240K NOTE ADF for originals Transport Belt R R R Belt cleaner Feed Belt R R R Belt cleaner Separation Roller R R R Dry or damp cloth Sensors Blower brush Drive Gears L L L Grease G501 EM 150K 300K 450K NOTE PAPER TRAY UNIT P Paper Feed Rollers R R R Check the counter value for Pick up Rollers R R each paper tray station SP7 Separation Rollers R R R 204 If the value has reached 150 jepace the roller After replacing the roller reset the counter SP7 816 Relay Rollers Dry or damp cloth Bottom Plate Pad Dry or damp cloth NOTE LCT Paper Feed Roller Pick up Roller Separation Roller Check the counter value for each paper tray station SP7 204 If the value has reached 150k replace the roller After replacing the roller reset the counter SP7 816 Bottom Plate Pad EM 150K Dry or damp cloth NOTE 1 000 SHEET 3 000 SHEET FINISHERS Rollers Clean with water or alcohol Brush Roller Replace if necessary Discharge Brush Clean with a dry cloth Sensors Blower brush Jogger Fences Replace if necessary Punch Waste Hopper Empty the hopper NOTE 1 BIN TRAY UNIT Rollers Dry or damp cloth Copy Tray Dry or damp cloth Sensors 5 3 Blower brush reventive
21. NOTE L Lengthwise S Sideways O High paper present X Low For other combinations CANNOT DETECT ORIG SIZE will be indicated on the operation panel display The above table shows the outputs of the sensors for each original size This original size detection method eliminates the necessity for a pre scan and increases the machine s productivity However if the by pass feeder is used note that the machine assumes that the copy paper is lengthwise For example if A4 sideways paper is placed on the by pass tray the machine assumes it is A3 paper and scans a full A3 area disregarding the original size sensors However for each page the data signal to the laser diode is stopped to match the copy paper length detected by the registration sensor This means that copy time for the first page may be slower because of the longer time required for scanning but it will be normal for the rest of the job Original size detection using the ADF is described in the manual for the ARDF 2 4 26 March 1998 IMAGE PROCESSING 2 2 IMAGE PROCESSING 2 2 1 OVERVIEW a os oo an e LD Fax Controller Controller Drum GAVD Memory FCI Control MSU HDD IC Printer Controller A231D531 WMF The CCD generates an analog video signal The SBU Sensor Board Unit converts the analog signal
22. oo an e ENERGY SAVER MODES 26 March 1998 2 11 ENERGY SAVER MODES 2 11 1 OVERVIEW Main Power Main Power Operation Switch Off Switch On Switch On Any Status Main Power Power H Main Power Operation Within Operation 40 45s Switch On to return 4 Operation Stand by Mode E Energy Auto off Saver Key Timer Auto Off Mode ze Cy gt 4 EN Ringing Fusing lamp Off Signal Energy Saver LED System 5V Off 5VE Energy Energy Saver Mode Night Mode Within 3s or 2 Energy Saver Level 1 2 10 to Fusing lamp to low temp return System 5V Off Energy Saver LED On 5VE On Selected by System 5V On UP mode Within 20s Ringing Low Power or 30s to Bare i ift Ti j return Off Shift Timer hook cu Fax id conditions Low Power Mode Switch Off Fusing lamp to low z Y D one Ype temp Operation _ Night Stand Energy Saver LED On by Mode System 5V On Operation Operation Operation System 5V On Switch Switch Off A231D517 WMF When the machine is not used the energy saver function reduces power consumption by decreasing the fusing temperature This machine has four t
23. own Dow 2 25 4 2 CPATT 45 a6 RESET RESET a6 75 18 ar ADD Poos 2 4 38 AS CPATS 38 38 DARDS 48 ps PADD 42 Ponto TNTHDD 2 42 50 NOTSRAMCS RAMOS 50 50 lt CDSET CDSET 50 EXSAF T 2 1 T N N T 5 N N 55 NC 33 33 comt 1 55 5 NC NC 54 s sr NC AB 5 NC BYTE 88 S os DRS 56 57 NC NC 5 37 DMS DURS 57 58 WA WEE 58 55 BHR 58 59 NOSEXOARD EXOARD 59 prime 5 80 1 2 NOSSUEEP SLEEP 2 80 St VPONTD IPn SeT 1 o2 SLEEP SLEEP 6 so OMS DWG 5 3 BVDUSCSCNT CSCNT 83 s bz 53 aso POE SI 2 8 8 3 COMI 55 CPD10 6 5 cowr COMI 55 87 052 bz Ser DWDTS 87 ND COM 85 8 s Dub 8 76 nA ONDT on DHS 7i owo Diib 74 75 cowi COMI 75 CN336 omenone CN326 6 357 357 a UTR UDTR T 35VD 35VD 4 TE 78 007 BHT gt 78 LL woe 73 gt 30 Dubs Dubs 80 sd p E Dlipi 6r TR29 URI URIS 6 82 lt DMD3 DMD3 gt 82 7 90583 UDSR gt 7 83 DMD2 DMD2 gt 83 5 UCTS UCTS 84 DMDT DMDT_ gt 84 x E ono 8 10 38V 35V 10 5 EJ 87 gt
24. 270 Degrees 180 Degrees 00 01 02 03 04 20 21 22 23 24 30 31 32 33 34 40 41 42 43 44 M od E ol Sub Scan Direction A231D534 WMF The image data from the IPU first goes to the FIFO block This block consists of 14 FIFO memories 7 for data input 7 for data output FIFOs are used because the image compression is done using four scan lines at the same time to improve the image compression speed The image data then goes to the GA2 IC where the image data for a whole page is divided into many blocks the block size is 4 x 4 pixels as shown above left Then each block is compressed and sent to HDD DRAM and SIMM memory For printing the compressed data blocks from the HDD DRAM and SIMM memory go back to the GA2 IC This IC assigns these blocks to the proper positions for printing then the data blocks are decompressed In the image rotation mode each compressed data block is rotated into the correct orientation and mapped into the proper position then the blocks are decompressed 2 20 26 March 1998 IMAGE PROCESSING 2 2 6 FCI FINE CHARACTER IMAGE
25. Er on Cs og Remove the scanner motor C 2 screws 5 Do the scanner and printer copy adjustments see Replacement and Adjustment Copy Adjustments SCANNER UNIT 26 March 1998 6 1 8 SIB LAMP STABILIZER Ne oin IN A230R108 WMF Remove the scanner rear cover See Scanner Exterior Remove the bracket A 4 screws Remove two grounding wires B 1 screw each Remove the rear bracket C 5 screws 2 connectors Remove the SIB D 2 screws 4 connectors 2 flexible harnesses Remove the lamp stabilizer E 2 connectors 6 8 26 March 1998 SCANNER UNIT 6 1 9 SCANNER WIRE DCN OV ee B A230R110 WMF T o EE o on 5 lt A230R112 WMF Remove the exposure glass operation panel and all scanner exterior covers See Exposure Glass and Scanner Exterior Remove the left upper stay A 4 screws Remove the right upper stay B 4 screws Remove the front frame C 7 screws Remove the scanner motor See Scanner Motor Remove the rear frame D 8 screws Remove the scanner drive pulley E 1 set screw 6 9 SCANNER UNIT 26 March 1998 10 11 15 16 17 18 A230R111 WMF Remove the front and rear scanner wire brackets A 1 screw each Then remove the 1st scanner Remove the front scanner rail F on the previous page 2 screws Remove the rear scanner rail G on the previous
26. No Test Pattern No Test Pattern 0 None 8 Vertical Lines 2 dot 1 Grayscale 1 9 Hatch Pattern 2 Grayscale 2 10 Cross Pattern 3 Grayscale 3 11 Slant Pattern 4 Grayscale 4 12 Cross Stitch 400 dpi 5 Grayscale 5 13 Cross Stitch 600 dpi 6 Vertical Lines 256 greyscale 14 Patch Pattern 256 grayscale 7 Vertical Lines 1 dot 15 Patch Pattern 128 grayscale Test Pattern Table SP2 902 3 Test Pattern Printing Printing Test Pattern Teat Pattern None Argyle Pattern Vertical Line 1 dot 16 Grayscales Horizontal Horizontal Line 1 dot 16 Grayscales Vertical Vertical Line 2 dot 16 Grayscales Vert Hor Horizontal Line 2 dot 16 Grayscales Vert Hor Overlay Grid Pattern Single dot Not used Grid Pattern Double dot Horizontal Line 1 dot Alternating Dot Pattern Grid Pattern Single dot Full Dot Pattern Grid Pattern Double dot 2 amp Black Band Alternating Dot Pattern Trimming Area 4 51 Blank Page SERVICE PROGRAM MODE 4 2 4 INPUT CHECK Main Machine Input Check SP5 803 Access SP mode 2 Select the class 3 SP number which will access the switch or sensor you wish to check 3 Check the status of the sensor or switch 26 March 1998 NOTE If you wish to change to another class 3 level press the Next or Prev key 4
27. M1 35 M2 8 ScannerDrive An 5 20 DPeostioing J1 36 CooingFan swi 43 RightLowerCover 09 M8 34 TonerSupply 12 M9 56 _ PSUCoolingFan_ E1 Lower Relay Q6 Upper Tray Set Magnetic Clutches Heaters H1 1 Optics Anti condensation L4 option Tray option hermistors 7 hermofuses 7 ounters Others CB1 57 Circuit Breaker 220 240V EE EHE LSD 23 Laser Synchronization K10 E RN DUPLEX A687 Motors Motors M2 69 Transport B5 Sensors 7 S3 71 CoverGuide B5 Switches Switches SW1 65 Duplex Unit olenoids SOL 66 inverter Gate 5 PCBs 7 PCBs PCB 68 Main B4 BRIDGE UNIT A688 Motors Sensors 7 Tray Exit Swithes Switches olenoid SOL1 Junction Gate BY PASS A689 Sensors Q5 Paper End Paper Size SensorBoard 06 Solenoids Solenids 7 80 Pickup 05 Magnetic Clutches 1 81 PaperFeed Q5 INTERCHANGE UNIT A690 sympot No escipion Pror es me cxi SOL1 Duplex Junction Gate SOL2 Exit Junction Gate OTHERS Others Others 53 HD KI 59 8 F8 L 60 Mother Board 1 2 3 4 5 6 7 8 9 10 11 12 13 14 POINT TO POINT DIAGRA
28. 5 602 Communication error between BICU and HDD control board Definition B The BICU cannot communicate with the HDD control board properly Possible causes Poor connection between the BICU board and HDD control board e HDD control board defective e BICU board defective 5 620 1 Communication error between BICU and ADF 1 Definition B The BICU cannot receive a response signal three times when a communication error has occurred Possible causes e Poor connection between the BICU board and ADF main board e ADF main board defective e BICU board defective 5 620 2 Communication error between BICU and ADF 2 Definition B The BICU receives a Break signal from the ADF main board Possible causes e Poor connection between the BICU board and ADF main board e ADF main board defective e BICU board defective 5 620 3 Communication error between BICU and ADF 3 Definition B The BICU sends a command to the ADF main board which does not operate an ADF function Possible causes e Poor connection between the BICU board and the ADF main board e ADF main board defective e BICU board defective og Qs 22 7 17 SERVICE CALL CONDITIONS 26 March 1998 5 621 Communication error between BICU and finisher Definition B The BICU cannot communicate with the finisher properly Possible causes e Poor connection between the BICU board and the finisher main board e Fin
29. 5 Connect the power cable of the HDD A to the PSU B and route the cable as shown 6 Connect the power cable and the harness C to the HDD Install the HDD assembly D 3 screws NOTE Make sure that both harnesses are routed through the cutout in the lower HDD case 8 Clamp the power cable with the metal clamper E 9 Install the HDD controller bracket F 2 screws 10 Install the HDD controller G 2 screws and connect the harness NOTE The upper screw secures the grounding wire as shown 1 Install the shield plate H 2 screws ELECTRIC SORT KIT INSTALLATION 26 March 1998 3 17 ELECTRIC SORT KIT INSTALLATION C B A A2311517 WMF NCAUTION Unplug the machine power cord before starting the following procedure NOTE 1 Do not touch the connector strips gold parts with bare hands 2 If the expansion box and hard disk have been installed remove them before starting the following procedure 1 Remove the connector cover A 2 Remove the rear cover B 4 screws 3 Connect the electric sort kit C to the BICU as shown 26 March 1998 KEY COUNTER INSTALLATION 3 18 KEY COUNTER INSTALLATION C Installation A2311518 WMF A2301966 WMF F NCAUTION Unplug the machine power cord before starting the following procedure 1 Hold the key counter plates A on the inside of the key counter bracket B and insert the key
30. Lower Paper 45 Height 1 Sensor 5 5V Upper Paper Feed CI W24 O 0 GND2 Ls a CN120 2 Lipper zx e Paper Feed Clutch 4 V5 Upper Tray Switch 24v 240 1049 10 40 Switch Relay Clutch Voltage Relay Clutch W24 52 O 0 GND2 Q W5 Lower Tray Switch Lower Tray Switch O 24 24V 24 Vertical Guide Switch Vertical Guide Switch PAPER TRAY UNIT A682 ELECTRICAL COMPONENT LAYOUT symbot No peseripton Proe Motors Mt 4 Tray GfO M2 8 Tray Lift Sensors 7 10 Lower Paper Height 2 12 Upper Tray Lower Tray Vertical Guide 2 9 Lower Paper Feed MC3 6 Relay LC SS EN PCB PCB1 1 1 1 Lift Sensor Relay Sensor Paper End Sensor Paper Height 1 Sensor Paper Height 3 Sensor Paper Height 2 Sensor Side Fence Position Sensor LCT Set Sensor Lower Limit Sensor Tray Cover Switch o 5 o S POINT TO POINT DIAGRAM LCT 6 CN115 3 CN101 A1 2 1 O 0 GND2 O W5 Lift Sensor 5 5V CN113 3 A101 A4 2 1 O 0 GND2 V5 Relay Sensor CN112 3 A101 A7 2 1 O 0 GND2 A5 Paper End 5 5V CN118 3 A101 B1 2 1 O 0 GND2 A5 Paper Height 1 Sensor CN116 3 CN101 B4 2 5 1 B6 O 0 GND2 5 Paper Height 3 Sensor 5 5V 117 3 CN101 B7 2 B8 1 9 O 0 GND2 45 Paper Height
31. Total Original Jam by Location ADF Feed in Sensor Total Original Jam by Location ADF Feed out Sensor Displays the total number of original jams by location These are jams when the original does not activate the sensor Total Copy Jam by Paper Size A3 Total Copy Jam by Paper Size A4 Total Copy Jam by Paper Size A5 Total Copy Jam by Paper Size B4 Total Copy Jam by Paper Size B5 Total Copy Jam by Paper Size DLT Total Copy Jam by Paper Size LG Total Copy Jam by Paper Size LT Total Copy Jam by Paper Size HLT Total Copy Jam by Paper Size Other Sizes Displays the total number of copy jams by paper size 4 46 26 March 1998 SERVICE PROGRAM MODE Mode No Class 3 Function Settings 1 Total Counter Displays the last 5 digits of the total Value at Copy counter value for the most recent 10 Jam copy jams Latest Total Counter Value at Copy Jam 2nd Latest Total Counter Value at Copy Jam 8rd Latest Total Counter Value at Copy Jam 4th Latest Total Counter Value at Copy Jam 5th Latest Total Counter Value at Copy Jam 6th Latest Total Counter Value at Copy Jam 7th Latest Total Counter Value at Copy Jam 8th Latest Total Counter Value at Copy Jam 9th Latest Total Counter Value at Copy Jam 10th Latest Total Counter Value at Origi
32. ud SP7 Pick up Roller R R R If the value has Paper Feed Roller R R R reached 150k replace the By pass feed table roller After replacing the Separation Roller R R R i By pass feed table Pick up Roller R R R By pass feed table Paper Feed Guides Clean with water or alcohol Relay Rollers Clean with water or alcohol Bottom Plate Pad Clean with water or alcohol Bottom Plate Pad Clean with water or alcohol By pass feed Registration Sensor Blower brush TRANSFER BELT UNIT Transfer Belt R R R Dry cloth Transfer Belt R R R Cleaning Blade Transfer Belt Rollers Dry cloth Entrance Seal Dry cloth Transfer Entrance Dry cloth Guide Used Toner Tank Empty the tank FUSING UNIT AND PAPER EXIT Fusing Entrance and Clean with water or alcohol Exit Guide Plates Hot Roller R R R Pressure Roller R R R Fusing Thermistor Clean if necessary suitable solvent Cleaning Roller Clean with water or alcohol Cleaning Roller L L L Grease Barrierta JFE 55 2 Bushings Pressure Roller Clean with water or alcohol Strippers Hot Roller Strippers H C Clean with water or alcohol Paper Exit Guide C C C Clean with water or alcohol OTHERS Drive Belts Replace if necessary 5 2 26 March 1998 PM TABLE
33. 0 Disabled 37 Background Erase Level Generation Copy mode Adjust the threshold level for background erase in generation copy mode A larger value reduces dirty background 0 255 1 step 20 38 Gradation Mode Setting Selects the standard gradation mode bit 4 0 Normal operation 1 No gradation processing bit 3 0 Normal operation 1 No gamma correction bit 2 Copied original mode 0 Error diffusion off 1 Error diffusion on bit 1 Low density original mode 0 Error diffusion off 1 Error diffusion on bit 0 Text mode 0 Error diffusion off 1 Error diffusion on Input the setting for all 8 bits at once as a decimal value Example To set bits 2 1 and O to 1 input 7 0 63 1 step 39 Binary Filter Setting Selects the binary matrix filter 0 Filter off 1 Independent dot erase filter 3x3 2 Independent dot erase filter 4x4 3 Independent dot erase filter 5x5 4 Uneven correction filter 3x3 Do not change the value 0 4 1 step 4 25 SERVICE PROGRAM MODE Mode No Class 3 Function 26 March 1998 Settings 41 MTF Filter Coefficient Level Binary Processing 25 64 Selects the MTF filter coefficient for letter mode with binary processing using 25 64 reduction Weak Strong 11 8 2 1 9 0 5 4 10 7 3 6 0 11 1 step MTF Filter Coefficient Level Binary Processing 65 154 Selec
34. 2 3 0 Error Alarm Level Japanese version only Do not change the values copies step 2500 copies 30 5000 copies 40 Paper Control Call Interval Other Paper Sizes RSS function Paper Control Call Interval A3 RSS function Paper Control Call Interval A4 RSS function Paper Control Call Interval A5 RSS function Paper Control Call Interval B4 RSS function Paper Control Call Interval B5 RSS function Paper Control Call Interval DLT RSS function Paper Control Call Interval LG RSS function Japanese version only Do not change the values 4 33 250 10000 1 page step 1000 pages SERVICE PROGRAM MODE 26 March 1998 Mode No Class 3 Function Settings 5 507 166 Paper Control Call Japanese version only 250 10 000 Interval LT Do not change the values 1 page step RSS function 1 000 pages 172 Paper Control Call Interval HLT RSS function 5 590 1 Original Auto Call Japanese version only 0 Off RSS function Do not change the values 1 2 Cover Open Auto 0 Off Call 1 On RSS function 3 Paper Control Call 0 Off RSS function 1 On 4 Staple Auto Call 0 Off RSS function 1 On 5 Toner Auto Call 0 Off RSS function 1 5 801 Memory All Clear Resets all correction data for process control and all softw
35. 2 s NC NC 3 Sf PGDS 2 26 ND OMT F007 PGDE com 28 a5 lt P605 peos 2 28 KAWRDD AWKDO S35 25 P606 Peo 23 T KOT 30 oh ranr Pr 30 T CAWKDZ ar WT WT 1 327 XAWKDS AWKDS 3 32 a2 PRISE PORAS 32 33 KAW AWKDi 33 33 PGCASU PGOASU 55 2 KD 5 PGOASLI KDS AWKDG FOWL 38 XAWKD 36 36 PORD 2 15 37 37 3r 97 35 COND com 35 38 omoia TOi MB 20 TOND CONT 40 40 DACKE DAKE 40 PMU Cen CoM ai 27 trae BROT Cen Coma 32 rar DROIS 42 a3 f AREST AEST E WT M E NC NC El 31 ons DORSL 44 m XRRUSYG 45 35 865 4 36 NC NC 45 21 45 a7 f XARFGT 4 a7 DAGKTS E NC NC 35 1 19 SEIGCS 2 1 35 RWS YN CWRSYNC S a 35 Dune 4 s0 EX FOU 56 50 OHA 50 FSWNCOS ST D ET ETS OM s3 eono 5 5 s1 Cen 54 sr 2 54 55 55 55 DORD 2 85 56 S RESET RESETS 56 57 ARROZ 87 s7 2 57 ARROS se outs DWDTS 58 59 4 ARROI 55 so lt DDTF Da 80 XARKD ARD e s DNDTI gt ter St 6 eT
36. 2 2 9 XDMACK gt 29 XAWKDO gt A29 lt RXD F lt JLower Paper Size 2 5 OPDAI GND 84 MID 4 24 lt A5 8 4 30 GND 30 XAWKD1 gt A30 45VE B5 lt Lower Paper Size 1 WAS OPDAO PCB7 GND lt DECO4 85 MID 5 25 4 gt 31 31 XAWKD2 gt 5VE Be lt Lower Paper Amount 2 0 liock ADE7 lt DECO 5 86 MID 6 6 lt A3 user 32 lt XIOCSIe 32 gt A32 45VE lt Lower Paper Amount 1 hea 24 24 ADO7 lt DECO S 87 MID 7 lt Synchronization 33 ADDR 1 38 XAWKD4 gt Bi GND B8 Lower Paper Height 0 ADES lt 88 GND 28 Ai Detector 34 N C 34 XAWKD5 gt 2 lt XARKD7 B9 Lower Relay 5 5 5 Operation Sw ADOS 89 GND 29 AO gt 1 24 1 5 35 ADDRO gt 35 XAWKD gt B3 lt XARKD5 10 lt Lower Paper End 10 Beeper GND z OROT 90 280010 36 ADDR2 gt 36 XAWKD gt B4 lt XABKD3 B11 Tower Paper Feed gt 10 5 5VE Power Sw LED GND lt 91 3 ON W5SI slef 318 Polygonal 3 XCSIFX gt 37 GND lt XARKD 1 B12 gt 5 Back Light ADES 4 LOCKIWS 5 5 2 5 Mirror 38 XCS3EX gt 38 GND B5 GND B13 7Lower Tray Lift Motor Up gt 12 12V DOS 5 CLOCK 4 39 NC 39 lt 7 XOE2 gt Bta Relay CL gt ADEA 40 GND 49 GND KRE B15 lt Right Lower Cover Sw B16 TBy pass Paper Feed CL gt CN508 SIB GND 42 GND B10 RXRDYF gt 817 By pass
37. 2419 14 o E e 3 mo Tray Half tum Sensor 24V B 24 2 6 L a 0 peter a Lies Jogger 2 4 CN268 1 CN108 9 2 S8 0 GND2 Jogger Motor B W24 0 24 o 8 now O C 7 7 J Motor W24 0 24 o 2 eee 45 Stack Feed out Belt HP Sensor M 2 4 CN258 1 CN108 6 CN118 8 228 7 3 6 22 5 5 Jogger Fence HP Sensor 24V B 24 5 0 3 4 bio GND2 56424523945 Stapler Sesh ies Meis S ose Motor N 04 C 208 1 CN1083 401 GND2 Stapler Motor W245 0 2416 213 fo z J 3 SA o 2 2 5 Stapler Tray HP Sensor Stapler Motor W24 0 24 o 214 2 dues 3 1 Q 5 5V ee CN119 1 CN2197 _ Q o 5 5V 2 6 55 0 2 45 Stapler HP Sensor 24V B 2419 Stapler 3 4 Stapler Rotation Motor A W24 0 24 o eee 0 GND2 ae XB UE rum Rotation CN309 CN209 CN109 AE See 25 Motor S615 5 7 1 E E Stapler Rotation Motor W24 0 24 o 7 56 6 2 2 2 45 Stapler Rotation HP Sensor p v 19 3 3 1 901 GND2 CN600 CN121 cine 1 11 TOU r3 Staple Hummer Motor W24 120 12 CN220 1 OQ Q gt 2 5 5 rJ Staple Hummer Motor V24 o 11 2 518 O W5 Punch Unit Installed 9 4 9 4 3 4 Staple Hummer Motor V24 T T T sensor L Staple Hummer Motor
38. 31 Check the copy quality and machine operation refer to the Replacement and Adjustment Copy Adjustment section of the service manual 3 11 PAPER TRAY UNIT INSTALLATION 26 March 1998 3 4 PAPER TRAY UNIT INSTALLATION 3 4 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Q ty 1 SOMME Bracket zo ceo 1 1 2 Heal lad aat itv a n esed eats 1 4 Stand 1 Knob Screws CHEER 1 6 Knob Screw MebcTIO osi 1 7 Multi language 17 27 machines 1 8 Installation Procedure 1 3 12 26 March 1998 PAPER TRAY UNIT INSTALLATION 3 4 2 INSTALLATION PROCEDURE Installation A2301107 WMF A230l104 WMF NCAUTION Unplug the main machine power cord before starting the following procedure 1 Unpack the paper tray unit Then remove the tapes 2 Remove the paper trays A from the base copier 3 13 PAPER TRAY UNIT INSTALLATION 26 March 1998 D C A2311514 WMF 3 Place the main machine on the paper tray unit A with the pegs B fitting into main machine s peg holes NOTE 1 The machine must be held as shown in the above illustration 2 Do not hold the scanner unit when lifting 4 Attach the spring washer C to the short knob screw D
39. 4 8 F 12MB 1 6 GB i i One to one Binary Grayscale O O X O E 5 P Multiple copy of Binary Grayscale a single page original DG So Multiple copy of Binary Grayscale multi page original SUD gt Duplex Copy Binary Grayscale O X X O Sort Binary Grayscale X X O X X O Image Rotation Binary Grayscale O X X O Key O O Possible in both binary and grayscale mode if this equipment is installed X Possible only in binary mode if this equipment is installed X Possible only in grayscale mode if this equipment is installed X X Not possible in either mode Example Multiple copy of multi page original is impossible with greyscale processing if only the DRAM is installed Note that the SIMM is standard equipment for the NAD30 and NAD40 Binary picture processing mode The data which was treated with binary picture processing goes to the GA1 IC The data is first compressed and the compressed data is stored in the DRAM and SIMM memory When printing the data from the DRAM and SIMM memory goes back to the GA1 IC where the data is decompressed and image editing is done e g image rotation repeat image combine image 2 19 IMAGE PROCESSING 26 March 1998 Grayscale processing moder 1 Pixel 1 block 16 pixels Scan Direction T 1 pant 0 Degrees 90 Degrees 3n4 See 4n 1 2
40. B A cooling fan motor lock signal is not detected within 5 seconds after the cooling fan motor turns on Possible causes Too much load on the drive mechanism Cooling fan motor defective e Poor fan motor connector connection 7 10 26 March 1998 SERVICE CALL CONDITIONS 5 493 Bridge unit cooling fan lock Definition B A bridge unit cooling fan motor lock signal is not detected within 5 seconds after the bridge unit cooling fan motor turns on Possible causes e Too much load on the drive mechanism e Bridge unit cooling fan motor defective e Poor fan motor connector connection C501 1 1st tray lift malfunction 1 Definition C The paper upper limit sensor is not activated after the tray lift motor has been on for 10 seconds Possible causes e ist tray upper limit sensor defective Tray lift motor defective Poor tray lift motor connection C501 2 1st tray lift malfunction 2 Definition C If the main power switch is turned on when the paper is already at the feed height the paper height position is detected again At this time the paper upper limit sensor should de activate within 5 seconds after the paper bottom plate starts to drop If it does not deactivate within 5 s four times consecutively this SC will be generated Possible causes e ist tray upper limit sensor defective Tray lift motor defective Too much paper in the tray og Qe 22 SC502 1 2nd tr
41. B The transfer roller current feedback signal is not detected Possible causes e High voltage supply board defective Poor connection between the transfer current terminal and the high voltage supply board e Poor PCU connection 403 Transfer belt position sensor error Definition B The transfer belt position sensor does not activate even if the transfer belt clutch has rotated once og as 22 Possible causes e Main motor drive malfunction e Transfer belt position sensor defective e Poor transfer belt position sensor connection 7 9 SERVICE CALL CONDITIONS 26 March 1998 SC 405 Transfer belt error Definition B The transfer belt does not move away from the drum during ID sensor pattern checking Possible causes Main motor drive malfunction e Transfer belt position sensor defective e Poor transfer belt position sensor connection 5 440 Main motor lock Definition B A main motor lock signal is not detected within 2 seconds after the main motor turns on Possible causes e Too much load on the drive mechanism e Main motor defective 5 490 Exhaust fan motor lock Definition B An exhaust fan motor lock signal is not detected within 5 seconds after the exhaust fan motor turns on Possible causes e Too much load on the drive mechanism e Exhaust fan motor defective e Poor fan motor connector connection 5 492 Cooling fan motor lock Definition
42. E 24 face Rapa SES B OT p om 24 1 y p Size BI 5 45V 6 5 By pass Paper Size Bit 1 W5 8244 E By pass Paper Size Bit 2 95 poe cc m 1 CN107 24 24VS 2225 5 8 2 By pass Paper Siza BES e over i 5 Gover Ext 4 0 Duplex Uni i 24 24V 398152 u E zz z 2 7 2415 24 5 Transport 9 oo9sO0 2 o9 E E fio By pass Pick up Solenoid 724 l gasgas 4 d X 17 wos 1 5 28 ogoogo zuo uz 243 24 i E LL Dp Tm mere 3 4 By pass Paper Feed Clutch 924 ad oo lt dat 2 GND 0 i 89 z 22 5 87 Sr 1 By pass Tray Set W5 8 E 68 a 5 i amam 1150 di P 826 Is 5 H LLL GND 0 2 5 By pass Paper End A5 am zm 1 5 9 g Adlad Ef NC616 5V 5 B EX AFF 2 DET 59 i 33 PEE ar E 519238 AS amp i 80 55 8 S 8 pper Tray 2 25 Main Board BSS PREC lo ua 58 58 Lower Tray Up w24 3 058884858 2299 502 ei EEEa aoze ee ES NCBI 4 2 2 an ive FEE lt Cu oo H a 5 39 E E V5 4 1 2 Upper J 6 8 GND 0 2 415 Set 5 5 ge 5 WE 24 5 19 2 Lower i
43. ID Grada correct erase cation i control tion TT i aa Binary Picture a Processing Background Letter gt AUI Independent MTF Magnifi y Corre Picture Shading cation ction amp Dot Erase Processing Auto Magnifi y Corre Error Fette nol ne Shading cation gt ction diffusion Auto Smoo Magnifi y Corre 8x8 Pago Shading thing cation gt ction Dithering Grayscale Processing Background Photo mode MTF can be used instead of smoothing SP 4 904 3 Background erase and independent dot erase can also be used in other modes than indicated above depending on SP mode settings The above diagram shows the default condition of the machine 2 9 Letter Ly Auto Independent MTF Magniti Grayscale i Shading cation Dot Erase Auto Magnifi y Corre Error Eee CP Shading cation ction diffusion Auto Smoo Magnifi 6x6 Photo Shading gt thing cation Dithering Background Pa Grayscale Generation Auto gt Independent MTF Magnif Y Corre Line width Shading D cation ction ot Erase correction Low Density Auto Magnifi y Corre Original Shading ME cation ction Grayscale A231D533 WMF IMAGE PROCESSING SP modes for each image process 26 March 1998 The f
44. Photo mode greyscale mode if smoothing is 1 enabled for photo with SP 4 904 3 Weak Strong 7 6 0 5 2 1 3 4 17 MTF Filter Selects the MTF filter coefficient for 0 11 Coefficient Level text photo mode using greyscale 1 step Text Photo mode mode 2 Weak Strong 11 8 2 1 9 0 5 4 10 7 3 6 18 MTF Filter Selects the MTF filter coefficient for 0 11 Coefficient Level low density original mode greyscale 1 step Low Density mode only 0 Original mode Weak Strong 11 8 2 1 9 0 5 4 10 7 3 6 19 MTF Filter Selects the MTF filter coefficient for 0 11 Coefficient Level copied original mode greyscale 1 step Copied Original mode only 4 mode Weak Strong 11 8 2 1 9 0 5 4 10 7 3 6 20 MTF Filter Selects the MTF strength for 25 0 x 0 25 Strength Level 64 reduction for letter mode using 1 x 0 5 25 64 greyscale processing 2 x1 3 x 2 4 x4 21 MTF Filter Selects the MTF strength for 65 0 x 0 25 Strength Level 154 magnification for letter mode 1 x 0 5 65 154 using greyscale processing 2 x1 3 x 2 4 x4 22 MTF Filter Selects the MTF strength for 155 0 x 0 25 Strength Level 256 enlargement for letter mode 1 0 5 155 256 using greyscale processing 2 x1 3 x 2 4 x4 23 MTF Filter Selects the MTF strength for 25 0 x 0 25 Strength Level 64 reduction for letter mode using 1 x 0 5 257 400 greyscale processing 2 x1 3 x 2 4 x 4 4 23 SERVICE PROGRAM MODE 26 March 1998
45. The laser chassis is not repairable in the field Customer engineers are therefore directed to return all chassis and laser subsystems to the factory or service depot when replacement of the optical subsystem is required NWARNING Use of controls or adjustment or performance of procedures other than those specified in this manual may result in hazardous radiation exposure NWARNING WARNING Turn off the main switch before attempting any of the procedures in the Laser Unit section Laser beams can seriously damage your eyes CAUTION MARKING INVISIBLE LASER RADIATION WHEN OPEN AVOID DIRECT EXPOSURE TO M DANGER BFA gt PS lt J 26 March 1998 SPECIFICATIONS 1 OVERALL MACHINE INFORMATION 1 1 SPECIFICATIONS NAD30S NAD30 NAD40 Note Configuration Desktop Copy Process Dry electrostatic transfer system Original Sheet Book Original Size Maximum A3 11 x 17 Copy Paper Maximum The duplex Size A3 11 x 17 unit and by Minimum i feed A5 5 5 x 8 5 lengthwise Paper tray Duplex onde No A6 5 5 x 8 5 i Standard rof i i NADSOS Copy Paper Paper Tray Duplex The duplex Weight 64 105 g m 20 28 Ib unit and by By pass pass feed 52 157 g m 16 42 Ib unit are not standard for NADSOS Reproduction 7R5E 7R5E Ratios Metric version 96 Metric version 96 400 200 141 122 400 200 141 122 115 100 93 87 82 115 1
46. The reading 0 or 1 will be displayed The meaning of the display is as follows Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 0 0 0 0 0 Class 3 no Bit no Description Reading Bit 2 Bit 1 0 0 Bit 0 0 0 1 1 7 Not used Upper Tray 6 Height Sensor 2 Not activated Activated Op Printer Controller 5 Height Sensor 1 Not activated Activated Op Printer Controller 4 Not used 3 Paper Size Sensor 4 Switch pressed Switch not Op Printer Controller pressed 2 Paper Size Sensor 3 Switch pressed Switch not Op Printer Controller pressed 1 Paper Size Sensor 2 Switch pressed Switch not Op Printer Controller pressed 0 Paper Size Sensor 1 Switch pressed Switch not Op Printer Controller pressed 2 7 Not used Lower Tray 6 Height Sensor 2 Not activated Activated Op Printer Controller 5 Height Sensor 1 Not activated Activated Op Printer Controller 4 Not used 3 Paper Size Sensor 4 Switch pressed Switch not Op Printer Controller pressed 2 Paper Size Sensor 3 Switch pressed Switch not Op Printer Controller pressed 1 Paper Size Sensor 2 Switch pressed Switch not Op Printer Controller pressed 0 Paper Size Sensor 1 Switch pressed Switch not Op Printer Controller pressed 4 52 26 March 1998 SERVICE PROGRAM MODE Class 3 no Bit no Description Reading
47. Then secure the paper tray unit Open the right cover of the paper tray unit E Secure the joint bracket F 1 long knob screw Remove the connector cover G of the main machine N Connect the paper tray unit harness H to the main machine and reinstall the connector cover 3 14 26 March 1998 PAPER TRAY UNIT INSTALLATION Installation A2301109 WMF C A2301111 WMF 10 Install the middle front cover A which is in the 2nd paper tray of the copier 11 Install the front and rear stands B as shown above 12 Install the stand bracket C 3 15 PAPER TRAY UNIT INSTALLATION 26 March 1998 A2311500 WMF 13 Load paper into the paper trays and install the paper trays NOTE The side and rear fences should be properly positioned using the green screw driver tool 14 Attach the appropriate tray decals A which are included in the accessory box for the main machine 15 Turn on the main power switch 16 Enter the paper size for each paper tray using a UP mode 17 Check the machine s operation and copy quality 3 16 26 March 1998 INTERCHANGE UNIT INSTALLATION 3 5 INTERCHANGE UNIT INSTALLATION 3 5 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Q ty 1 Timing Ball tt ett et cit etd a 1 eaters Nada tee tals ceettadereds 1 37 Giear P
48. To reduce the polygon motor rotation speed 2 To reduce the noise generated by the polygon motor 3 To reduce the frequency of the image data clock Two laser beams are transferred to the polygon mirror C through collimating lens D and prism E The two laser beams arrive on the drum surface about 2 mm away from each other in the main scan direction and about 0 06 mm at 400 dpi in the sub scan direction see the next page The reason for the two mm difference in the main scan direction is so that the machine can detect a laser synchronization signal for each beam LASER EXPOSURE 26 March 1998 2 3 5 LASER BEAM PITCH CHANGE MECHANISM P1 400 dpi P2 600 dpi A231D503 WMF A printer option is available for this machine and the resolution of the printer is 600 dpi The machine changes the resolution between 400 and 600 dpi by rotating the LD unit When the LD positioning motor A turns the metal block B which contacts the LD unit housing C moves up and down This changes the position of the L2 laser beam L1 does not move Both LD unit positions are at fixed distances from the LD home position sensor D measured by motor pulses Usually the LD unit moves directly to the proper position However when the number of times that the resolution has changed reaches the value of SP2 109 5 the LD unit moves to the home position the home position sensor activates then it moves to the proper position This recali
49. disabled or not 1 Yes 5 120 Mode Clear Op This SP is for Japan only Do not 0 2 Counter Removal change the value 1 step 0 5 121 Counter Up Determines whether the optional key 0 Feed in Timing counter counts up at paper feed in or 1 Exit at paper exit The total counter is not affected by this SP mode 5 127 APS Mode Selects whether the APS function 1 0 Disabled enabled or not 1 Enabled 4 31 SERVICE PROGRAM MODE 26 March 1998 Mode No ee Class 3 Function Settings 5 129 F Paper Size Selects the F paper size 0 84 x 13 Selection 1 87 x 13 2 8 13 5 131 Paper Size Type Selects the paper size type for 0 Japan Selection originals and copy paper 1 North After changing the value turn the America main power switch off and on 2 Europe e f the paper size type of the archive files stored in the HDD is different abnormal copies will be made In this condition perform SP5 822 and ask the user to restore the archive files 5 305 Auto Off Mode Selects auto off timer setting range 0 No Disabling 1 Yes When 1 is selected the auto off timer range will be wider than the default timer range and the user can disable the auto off timer In UP mode the user will be able to select a time between 0 and 240 minutes 5 401 2 Restricted Access Selects whether restricted access 0 No Control for Key control is done when using the
50. finisher or optional external output tray If the sub scan length is more than 330 mm the exit tray is as shown below if the relevant options have been installed Installed options Exit tray for paper longer than 330 mm Bridge unit amp Finisher 1 000 sheet Int Tray A Bridge unit amp Finisher 3 000 sheet Ext Tray C The finisher upper tray Bridge unit amp optional ext output tray Ext Tray C Ext output tray 1 5 MACHINE CONFIGURATION 26 March 1998 1 3 MACHINE CONFIGURATION 1 3 1 SYSTEM COMPONENTS 1 6 26 March 1998 MACHINE CONFIGURATION Version Item Machine Code No Copier NAD30 S A230 8 Copier NAD30 A231 8 Copier NAD40 A232 8 ARDF Option A680 2 Platen Cover Option A381 1 Paper Tray Unit Option A682 9 LCT Option A683 7 By pass Feed Unit Option NAD30S only A689 5 Duplex Unit Option NAD30S only A687 6 Interchange Unit Option NAD3OS only A690 4 Copy 1 bin Tray Option A684 3 Bridge Unit Option A688 13 1000 sheet Finisher Option A681 11 3000 sheet Finisher Option NAD40 only A697 10 Punch Unit Option for 3000 sheet Finisher A812 17 3 holes A812 27 2 holes External Output Tray Option A825 12 Electrical Sort Kit 8 MB Memory Option A818 NAD30S only 1
51. g to print incoming fax data or to print data from a PC the fusing temperature rises to print the data However the operation indicators stay off Return to stand by mode If one of the following is done the machine returns to stand by mode e The Clear Mode Energy Saver Mode key is pressed e Any key on the operation panel is pressed e An original is placed in the ADF e The ADF is lifted e A sheet of paper is placed in the by pass feed table The recovery time from energy saver level 1 is about 3 s The recovery time from energy saver level 2 is about 10 s Energy Saver Fusing Temp LED On On Operation Mode Switch Energy Saver 35 cpm 157 C Level 1 45 cpm 175 C Energy Saver 35 cpm 150 C Level 2 en On 45 cpm 170 C ENERGY SAVER MODES 26 March 1998 2 11 3 LOW POWER MODE Entering the low power mode The machine enters low power mode when one of the following is done e The low power shift timer runs out after the end of a job e The Clear Mode Energy Saver key is held down for a second see Note NOTE The machine enters either energy saver mode or low power mode when pressing the Clear Mode Energy Saver key depending on the setting of the UP mode What happens in low power mode The fusing lamp drops to a certain temperature as shown in the table below the temperature drops more that in energy saver mode The other conditions are the same as for energy saver mode R
52. lt Vt 10 or 0 25 Toner supply motor turns on in reverse for 0 3 Has the following condition been detected 10 times Vtref 0 2 gt Vt 10 or Has the toner supply motor been turned on Yes K not K K 0 25 changed GAIN determination Image pixel count mode GAIN 1 Toner supply motor on time calculation more copies been made since the last Vtref change and is the copy job finished Vsp Vsg detection New Vtref determination 2 40 A231D540 WMF 26 March 1998 DEVELOPMENT Sensor Control Mode In sensor control mode the machine varies toner supply for each copy to maintain the correct proportion of toner in the developer and to account for changes in drum reflectivity over time The adjustment depends on two factors e The amount of toner required to print the page based on a black pixel amount for the page e Readings from the TD sensor and ID sensor Each step of the previous flow chart is explained in more detail on the following pages ao os oo an e Toner density sensor initial setting When new developer with the standard toner concentration is installed 12 5 g of toner in 500 g of developer which is 2 5 by weight TD sensor initial setting must be done using SP2 801 This sets sensor output to 4 0V This value will be used as the toner supply reference voltage Vtref of t
53. should be inside the development unit case 6 25 DEVELOPMENT 26 March 1998 6 4 4 DEVELOPER A230R404 WMF D A230R405 WMF 1 Remove the development unit and place it on a clean sheet See Development Unit Remove the development roller See Development Roller Turn over the development unit the development filter A must be at the top as the unit turns over as shown and empty all the old developer B Make sure that no developer remains on the development roller or in the unit NOTE 1 Dispose of the used developer in accordance with local regulations 2 Be careful not to nick or scratch the development roller 4 Pour all the new developer C into the development unit Then rotate the gear D so that the developer is distributed evenly 6 26 26 March 1998 DEVELOPMENT A231R518 WMF 5 Reassemble the development unit and cover the toner entrance hole with a piece of paper A as shown o Install the development unit into the machine N Turn on the main power switch make sure that the machine has warmed up then perform the TD sensor initial setting using SP 2 801 8 After performing the TD sensor initial setting take out the sheet A from the development unit NOTE When doing the TD sensor initial setting cover the toner entrance hole with a piece of paper This is because if used toner in the PCU falls into the development unit through the toner entrance opening during
54. 26 March 1998 ADF Input Check SP6 007 Class 3 no Bit no Description Reading SERVICE PROGRAM MODE 0 1 1 Inverter Sensor Paper not Paper detected detected Exit Sensor Paper not Paper detected detected Registration Sensor Paper not Paper detected detected Entrance Sensor Paper not Paper detected detected Original Width Sensor 1 Paper not Paper detected detected Original Width Sensor 2 Paper not Paper detected detected Original Width Sensor 3 Paper not Paper detected detected Original Set Sensor Paper not Paper detected detected 2 Not used Lower Tray Original Stopper H P Original stopper Original Sensor is up stopper is down Pick up Roller Sensor Pick up roller is Pick up roller up is down Exit Cover Sensor Cover closed Cover opened Feed Cover Sensor Cover closed Cover opened DF Position Sensor Sensor is not Sensor is activated cover activated open cover closed or being closed APS Start Sensor Sensor is not Sensor is activated cover activated open cover closed or being closed 4 55 SERVICE PROGRAM MODE 26 March 1998 4 2 5 OUTPUT CHECK NOTE Motors keep turning in this mode regardless of upper or lower limit sensor signals To prevent mechanical or electrical damage do not keep an electrical component on for a long time Main Machine Output Check SP5 804 Access SP mode 5 804 Se
55. 26 March 1998 SCANNER UNIT 6 REPLACEMENT AND ADJUSTMENT NCAUTION Turn off the main power switch and unplug the machine before attempting any of the procedures in this section 6 1 SCANNER UNIT 6 1 1 EXPOSURE GLASS A230R101 WMF vcio 5 Er on Cs og Open the ADF or platen cover Remove the left scale A 2 screws Remove the rear scale B 3 screws q ues Remove the exposure glass NOTE When reinstalling the exposure glass make sure that the mark D is positioned at the rear left corner as shown SCANNER UNIT 26 March 1998 6 1 2 SCANNER EXTERIOR OPERATION PANEL CX gt I A230R109 WMF A230R105 WMF Remove the ADF or platen cover Remove the exposure glass See Exposure Glass Remove the operation panel A 4 screws 1 connector Remove the lower operation cover B 4 screws Remove the rear cover C 2 screws 2 pegs Remove the right cover D 3 screws Remove the left cover E 2 screws 6 2 26 March 1998 SCANNER UNIT 6 1 3 LENS BLOCK SBU ASSEMBLY A230R102 WMF Remove the exposure glass See Exposure Glass Remove the lens cover A 4 screws Disconnect the flexible harness B Remove the lens block assembly C 4 screws 5 Er on Cs og QV gw zr Do the scanner and printer copy adjustments see Replacement and Adjustment Co
56. 27k copies A4 sideways 6 full black 1 to 1 copying ADS mode Power Source North America 120V 60Hz More than 12A Europe Asia 220 240V 50 60Hz More than 8 Dimensions NAD30S Without W x D x H 600 x 640 x 720 mm 23 7 x 25 2 x 28 3 options NAD30 40 670 x 640 x 720 mm 26 4 x 25 2 x 28 3 Weight NAD30S 67 kg 147 8 Ib NAD30 40 75 kg 166 Ib 1 2 26 March 1998 Power Consumption SPECIFICATIONS Mainframe only 115 V Machine 5 NAD30S NAD30 NAD40 Note Maximum Less than 1 44 kW Less than 1 44 kW Copying Less than 1 15 kW Less than 1 3 kW Warm up Less than 1 05 kW Less than 1 15 kW Stand by Less than 200 W h Less than 220 W h Energy Saver Level 1 Ave 150 W h Ave 170 W h Energy Saver Level 2 Ave 130 W h Ave 150 W h Auto Shut Off Ave 12 W h Ave 12 W h 230 V machine NAD30S NAD30 NAD40 Note Maximum Less than 1 5 kW Less than 1 5 kW Copying Less than 1 10 kW Less than 1 2 kW Warm up Less than 1 05 kW Less than 1 15 kW Stand by Less than 220 W h Less than 240 W h Energy Saver Level 1 Ave 160 W h Ave 180 W h Energy Saver Level 2 Ave 154 W h Ave 168 W h Auto Shut Off Ave 12 W h Ave 12 W h System 115 V machine NAD30S NAD30 NAD40 Note Maximum Less than 1 44 kW Less than 1 44 kW Copying Less than 1 2 kW Less than 1 35 kW Warm up Less than 1 05 kW Less than 1 15 kW
57. 5 501 01 is displayed 7 24 26 March 1998 ELECTRICAL COMPONENT DEFECTS Component Symbol Lower Paper Open Add Paper is displayed even if there is Condition Symptom Height S12 paper If this condition occurred four times 5 502 02 will be displayed Shorted 5 502 01 is displayed Upper Paper 235 8 Open The Paper End indicator lights even if paper End S13 PFB is placed in the upper paper tray Shorted The Paper End indicator does not light even if there is no paper in the upper paper tray Lower Paper 236 8 Open The Paper End indicator lights even if paper End S14 PFB is placed in the lower paper tray if there is no paper in the lower paper tray Shorted The Paper End indicator does not light even Upper Relay 235 5 Open The Paper Jam indicator will light whenever S15 PFB a copy is made Shorted The Paper Jam indicator lights even if there 15 NO paper Lower Relay 236 5 Open The Paper Jam indicator will light whenever S16 PFB a copy is made Shorted The Paper Jam indicator lights even if there is no paper Upper Tray 239 1 Open Add Paper indicated even if there is paper S17 PFB Shorted Add Paper indicated when the tray is set Lower Tray 239 3 Open Add Paper indicated even if there is paper S18 PFB Shorted Add Paper indicated when the tray is set Transfer Belt 203 A8 Open No symptom Position S19 IOB
58. 50124 Motor E 24V 24 eel ees 24V 24 O CN215 7 4 15 i 5 O O 24 24V GND1 0 O Jogger 4 4 uo d Oe eR Ap E 24 0 24 Motor A GND1 0 O Fence 4 CN105 2 Motor Qu Sa See se 24 gt 0 24 Motor GND2 010 2 QUEUE 5 RXDO R SYMBOL TABLE DC Line Pulse Signal J3 Signal Direction Active High Active Low Voltage z 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 000 SHEET FINISHER A681 ELECTRICAL COMPONENT LAYOUT 26 25 24 Symbol No Description olenoids Motors Switches M4 19 Staple Hammer C13 M6 7 jExtGuidePlate M13 M7 M8 17 ShftTrayLit L13 M9 9 shift K 15 Main 1 1 B6 Sensors S7 6 ExtGudePlte 2 52 8 ShftIrayHal tum E POINT TO POINT DIAGRAM PAPER TRAY UNIT A682 Upper Lift Sensor Upper Paper End Sensor Upper Relay Sensor Lower Lift Sensor Lower Paper End Sensor Lower Relay Sensor Upper Paper Height 1 Sensor Upper Paper Height 2 Sensor Lower Paper Height 1 Sensor Lower Paper Height 2 Sensor Upper Tray 10 CN215 3 2 1 CN315 3 2 1 415 3 2 1 216 3 2 1 CN316 3 2 1 416 3 2 1 124 3 2 1 125 3 2 1 CN127 3 2 1 128 3
59. 801 NOTE Memory All Clear mode resets all the settings stored in the NVRAM to their default settings except the following Electrical total counter value SP7 003 1 e Machine serial number SP5 81 1 e Plug amp Play Brand Name and Production Name Setting SP5 907 Among the settings that are reset are the correction data for process control and all the software counters Normally this SP mode should not be used This procedure is required only after replacing the NVRAM or when the copier malfunctions due to a damaged NVRAM Print out all SMC Data Lists SP mode 5 990 Access SP mode 5 801 Hold down the 1 key for over 3 seconds At this time the beeper will sound Turn the main power switch off and back on Do the laser beam pitch adjustment OP Do the printer and scanner registration and magnification adjustments see Replacement and Adjustment Copy Adjustments 7 Referring to the SMC data lists re enter any values which had been changed from their factory settings 8 Do SP 3 001 2 ID Sensor Initial Setting and SP4 911 1 HDD media test Check the copy quality and the paper path and do any necessary adjustments SERVICE PROGRAM MODE 26 March 1998 4 2 9 SOFTWARE RESET The software can be reset when the machine hangs up Use the following procedure Either Turn the main power switch off and on Or Hold down the key and key at the same time for over 10 seconds 4 2 10 SYSTEM S
60. 87 a5 DMRS 2 9 E 2 8 30 CAST DORSL 80 i buwR Duwa 37 DMR 2 82 BOD a 865 BD 35 NC NC 55 CN4 CN328 s 800 15 an 7 v0 iD 97 E Com Com N N 4 13 12 HNGETRA NGEU RSEL HNGPL 3 35 cowr jos 12 5 ENGVOK 100 com COMI 11 lt RIDETSW NA NC EU DOSW RIDET 5 wi M NE ots SHOTS OHDISW 7 TONT oom 7 EXTOTEU NC 9 CN325 CN2 CN1 CN1 d OORT OORT S 70 T von TXWDW z 56 HOORT HOOKIS TT ZVANOM RNID 25 VENON FINN a NCU i Dann 12 3 cour 38 cow 3 3 13 7 i 37 VN av NR EU NO RONE s it ES IOS s 45 cour com 45 TH TRKD EXD 2 1 1 s RESET ESET 5 E FESE RES 1 7 a 44 rer atom Com 43 CN2 20051 10 n eo CO DOMNA NONE CN329 CPN 35 30 STS 5811 cer 3 32 CPR gt uz 38 NC NC Ed 7 eset 13 oParz Pa 18 38 ocs ocs h Z GSW 341 CPAT CPA 1 NC NC SE L 35 85 1 SVE 76 cP 2 16 55 nC nC 5 ear 2 17 E B oom PRS PAS 8 DENTE DENTE 73 P PRES DPWATE DPWATE 20 crt CPAL 20 31 DPICSS DP4CSS 51 2 oR PASS at 30 P rR 29 CN330
61. B A2301503 WMF Install the joint pins A Push the release lever B and slide the LCT to the right front view Hang the LCT C on the joint pins then secure the brackets D 4 screws NAD30S If the By pass Feed Unit A689 has not been installed Install the magnet E 10 Return the LCT to the previous position and connect the LCT cable F 11 Open the LCT cover and load the paper 12 Turn on the main power switch and check the LCT operation dE oue s S 1 000 SHEET FINISHER INSTALLATION 26 March 1998 3 12 1 000 SHEET FINISHER INSTALLATION 3 12 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Q ty T Front Stand ibn 1 25 1 3 KNOB SCOTS atten eii or tuit aiu miti ms 1 4 Screw 2 6 1 6 Installation Procedure 1 26 March 1998 1 000 SHEET FINISHER INSTALLATION 3 12 2 INSTALLATION PROCEDURE k 5 Se A2301701 WMF A2301702 WMF NCAUTION Unplug the main machine power cord before starting the following procedure NOTE The bridge unit A688 and paper tray unit A682 must be installed before installing this finisher 1 Unpack the finisher and remove the tapes 3 45 1 000 SHEET FINI
62. COPIER INSTALLATION 3 3 COPIER INSTALLATION 3 3 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Q ty 1 Operation Panel 1 2 ac 1 Model Name Decal 10 22 machines 1 4 Operation Panel Brand Sticker 10 22 machines 1 E 5 English 17 machine 1 E 6 Multi language 19 27 39 69 machines 1 7 User Survey Card 17 machine 1 B LIS DIOE 1 9 Pad until April 98 production machines 1 10 Operation Instructions System Setting 1 11 Operation Instructions Copy Reference 1 12 Operation Instructions Fax Reference 3 5 COPIER INSTALLATION 26 March 1998 3 3 2 INSTALLATION PROCEDURE A2301116 WMF A2301101 WMF NCAUTION Unplug the machine power cord before starting the following procedure If the optional paper tray unit is going to be installed now put the copier on the paper tray unit first then install the paper tray unit then install the copier NOTE Keep the shipping retainers after installing the machine They will be reused if the machine is moved to anot
63. Displays the total number of originals fed by the ADF 7 206 Total Staple Counter Displays the total number of used staples 7 301 Total Copies by Reproduction Ratio 25 49 2 Total Copies by Reproduction Ratio 50 99 4 Total Copies by Reproduction Ratio Full size 4 Total Copies by Reproduction Ratio 101 200 5 Total Copies by Reproduction Ratio 201 400 6 Total Copies by Reproduction Ratio Direct Mag 7 Total Copies by Reproduction Ratio Direct Size Mag 8 Total Copies by Reproduction Ratio Size Mag 9 Total Copies by Reproduction Ratio Fix Mag Displays the total number of prints by reproduction ratio 4 40 26 March 1998 Mode No Class 3 Function SERVICE PROGRAM MODE Settings 1 Total Copies by Image Editing Posi Nega 2 Total Copies by Image Editing Repeat Copy 3 Total Copies by Image Editing Memory Sort 4 Total Copies by Image Editing Staple 5 Total Copies by Image Editing Combine 6 Total Copies by Image Editing Series Copy Total Copies by Image Editing Erase Copy Displays the total number of prints by image editing mode Total Copies by Copy Mode Text Total Copies by Copy Mode Text Photo Total
64. E SA NEGR M HI 1 6 Installation Procedure 1 AUTO REVERSE DOCUMENT FEEDER INSTALLATION 26 March 1998 3 8 2 INSTALLATION PROCEDURE NCAUTION Unplug the main machine power cord before starting the following procedure 1 Unpack the ARDF Then remove the tapes on the exterior of the ARDF 2 Tighten the two stud screws A 3 Mount the ARDF by aligning the screw holes B in the ARDF over the stud screws and slide the ARDF to the front as shown NOTE When mounting the ARDF hold it by hand as shown in the illustration Holding it in another way may damage the ARDF 4 Secure the ARDF 2 knob screws C 26 March 1998 AUTO REVERSE DOCUMENT FEEDER INSTALLATION 5 5 A2301203 WMF 5 Remove the two seals A 6 Install the original tray B 2 screws 7 Attach the original direction decal C to the DF table as shown 8 Connect the I F harness D to the main machine 9 Turn on the main power switch 10 Check the ARDF operation and copy quality 3 33 DUPLEX UNIT INSTALLATION 26 March 1998 3 9 DUPLEX UNIT INSTALLATION 3 9 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Q ty MIEL dois METTE 1 2 AGOMMECION GOV Cl Sonore dite ode a dte a o CS RD Teva 1 3 Duplex Unit Stand ann atime ea mn 1 4 Stand 44444008 1 B Front COVEl
65. INSTALLATION 3 16 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Q ty QM pp ERE 1 PM C MPH 1 SE BSc 1 ADD Bracket 1 E 5 MSW Bracket a casta aca adeat ad ada add RN 1 E Tas Dur Duro sar DE ERE DI EAR DE 1 7 Interface Harness 50 1 B Shield Pate cranii EL se EE L o v Vor E Vr 1 9 Harness 1 10 Stepped SeFgW 4 11 Pan Head Screw 9 12 Screw M3X6 4 IMAGE ENHACEMENT KIT HDD INSTALLATION 26 March 1998 3 16 2 INSTALLATION PROCEDURE A A230R903 WMF A2311527 WMF A230R901 WMF NCAUTION Unplug the machine power cord before starting the following procedure NOTE 1 Do not drop or give a strong shock to the HDD 2 When installing the HDD in an NADSOS the electric sort kit must also be installed 3 If the expansion box has been installed remove it before starting the following procedure Remove the connector cover A and rear cover B 4 screws Remove the upper left cover C 4 screws Attach the lower HDD case D to the HDD E 3 screws Install the HDD bracket F 4 stepped screws Ame ow 26 March 1998 IMAGE ENHACEMENT KIT HDD INSTALLATION e S 5 S A2311523 WMF
66. LEVEL Front to back Within 5 mm 0 2 of level Right to left With in 5 mm 0 2 of level INSTALLATION REQUIREMENTS 26 March 1998 3 1 3 MINIMUM SPACE REQUIREMENTS Place the copier near the power source providing clearance as shown A In Front Over 75 cm 29 6 B Left Over 10 cm 4 C To Rear Over 10 cm 4 D Right Over 10 cm 4 560 mm 22 nl vj A2301954 WMF 180 mm 77 MET LLLA 985 mm 38 87 760 mm 26 4 865 mm 34 1 __ A2301952 WMF 600 mm 23 6 610 mm 24 A2301953 WMF 530 mm 20 9 A2301951 WMF NOTE The 75 cm recommended for the space at the front is for pulling out the paper tray only If an operator stands at the front of the copier more space is required 3 2 26 March 1998 INSTALLATION REQUIREMENTS 3 1 4 POWER REQUIREMENTS CAUTION Make sure that the wall outlet is near the copier and easily accessible Make sure the plug is firmly inserted in the outlet Avoid multi wiring Be sure to ground the machine 1 Input voltage level 120 V 60 Hz More than 10 A 220 V 240 V 50 Hz 60 Hz More than GA Permissible voltage fluctuation 10 96 3 Do not set anything on the power cord 5 n 3 3 INSTALLATION FLOW CHART 26 March 1998 3 2 INSTALLATION FLOW CHART The follow
67. M OON 63 NC 5 69 gt AT 3 1 SDE4 e4 lt D8 70 lt TXDF A8 2 Lower Paper SDES 651 lt D9 71 AS 438 Amount 1 l BE 13 X VS Original E BICU PCB1 pir 12 RINGING 10 ES s 8 y5 Original Lenath 3 lt XCR 5 ae AT 2 3 Paper 25 2 2 9 5 A12 Amount 2 o3 on 10 V5 LED ON E A 1 5 77 x EY 2 al 125 Orginal Length 4 g for ONSOMB 2 EX 4 55 BEL s pHa 45V 1 GND XHTRG 80 324 93 9E 35 V8 LED on M fala AAN 38 5900 ERES L 3 8 XABKDG 34 lt XARKDS 3 3 7 0 GND 55 5 lt XARKD4 35 XARKD3 NES 7 09 8 lt XARKD2 36 XARKD1 z 7 5 5 ESYNC gt 35 XQNBSYNC gt E A5 4 2 z 2 511 Upper Paper 5 3 4 n lt E 45V 5 3 55 Height Sa S BHi A E 5 8 5 amp 5 5V 3 Upper Relay en 3 3 E zji E pper Paper 5 v24 CN804 Thermistor E E End zo Fusing Lamp 1 2 10 CN236 RS 85 88 Fusing Lamp 2 4 SST Lower Paper Ed 155 Height Version onl 4 E 5 1 FG S 8 3 2155 Lower Relay D f 3 eas 8 61 Jas 8 Lower Paper 4 5 E 55 End SPU PCB2 GND o 12 12 4 a 5
68. March 1998 2 2 5 MEMORY BLOCK IPU A231D519 WMF The memory block consists of the GA1 IC GA2 IC DRAM SIMM and the hard disk drive The functions of each device are as follows GA 1 Compressing the 1 bit image data Image rotation Image transfer to the DRAM SIMM memory and GA 2 GA 2 Compressing the 8 bit image data Image rotation Image data transfer to the HDD FIFO memory and GA1 Controls the HDD DRAM 4 MB Stores compressed data in grayscale and binary picture processing mode Page memory 2 MB working area 2 MB SIMM memory 8 MB Stores compressed data with grayscale and binary picture processing mode In binary picture processing mode all the memory capacity is used for storing the image data At this time the DRAM is used for a working area Hard Disk Drive Stores compressed data in grayscale mode and stores archive file data 2 18 26 March 1998 IMAGE PROCESSING Image compression is done for both gradation modes grayscale and binary picture processing and the compressed data is stored However there are limitations in copy mode depending on the memory capacity and the installed memory components as follows DRAM is standard but the SIMM and HDD are options Gradation DRAM DRAM simm DRAM SIMM Copy Mode Processing 4MB
69. New Vref Decision New Vref Decision A231D535 WMF An ID sensor pattern is made during the machine initialization after the main power switch or operation switch is turned on and after finishing a copy job in which 10 this is the default value or more copies were made 2 5 4 DRUM CHARGE ROLLER CLEANING B A A230D303 WMF Because the drum charge roller A always contacts the drum it gets dirty easily So the cleaning pad B also contacts the drum charge roller all the time to clean the surface of the drum charge roller The pin C at the rear of the cleaning pad holder touches the cam gear D and this gear moves the cleaning pad from side to side This movement improves the cleaning 2 33 DEVELOPMENT 26 March 1998 2 6 DEVELOPMENT 2 6 1 OVERVIEW 7 A230D401 WMF This machine uses a single roller development system A dual mixing roller mechanism is used for developer mixing 1 Drum 5 Mixing Auger 2 Development Roller 6 Development Filter 3 Paddle Roller 7 Doctor Blade 4 TD Sensor 26 March 1998 DEVELOPMENT 2 6 2 DRIVE MECHANISM a 2 oo an e A230D402 WMF The main motor A drives the development roller B through a train of gears and the paddle roller gear C The development drive gears are helical gears These gears are quieter than normal gears When the development unit is pushed in the development drive shaft engages the paddle r
70. PCB1 7 Man 1 56 1 POINT TO POINT DIAGRAM 1 BIN TRAY A684 CN110 1 CN300 3 GND2 0 O NET T Paper Limit Paper Limit Sensor A5 Sensor 5V S _ CN110 4 CN310 3 Copier I 2 4 Motor Lock Connection Motor Lock 0 5 Sensor ccr EE Si 0 GND1 SVIS lr eu Eg 0 GND2 Right Cover Switch Y5 sies SEES Right Cover Switch GND2 O QI24 24V CN120 1 CN520 3 OI W24 0 24 A Motor GND2 0 C Entrance nS 0 24 A Motor Entrance Sensor W5 Sensor 0 24 B Motor sus 0 24 B Motor CN120 4 CN500 3 ODa4 24v GND2 0 O Paper Sensor A5 Paper Sen sor 5V S 24V 24 Paper Paper Indicator W24 Indicator Main Board PCB1 1 2 3 4 p E 7 5 symbol Ne Description pescripton Motor Swith 7 swi 4 Right Cover Sensors PCB1 S3 6 Paper LED1 8 Paper Indicator Motor Lock 9 10 11 12 13 14 POINT TO POINT DIAGRAM FINISHER 3 000 697 A Copier Front Door Safety Switch Entranc Sensor Stapler Tray Entrance Sensor Upper Tray Exit Sensor Upper Tray Paper Limit Sensor Shift Tray Exit Sensor Paper Height 1 Sensor Paper Height 2 Sensor Shift Tray Lower Limit 1 Sensor Shift Tray Lower Limit 2 Sensor Shift Tray Half turn Sensor Stack Feed out Belt HP Sensor Jogger Fence HP Sensor Stapler Tray Paper Sensor Sta
71. Pick up Sol gt 8 pow GND 43 lt XARLGT BTT Bia By pass Paper End ATE ADES 44 lt XDATA IN B12 GND B19 ale A i GND ADOS 45 XARLSYC 813 GND B20 By pass Paper Si o 0 GND ADE2 46 lt XRIRG B14 GND lt ___ By pass Paper Siz 2 Bat e 0 GND ADOZ 47 lt XARFGT 815 N C 22 lt By pass Paper Siz E 24 24V GND 48 XSW ON gt 816 NC B23 Bv pass Paper Siz 24 24V GND 49 XWRSYNC gt 7 N C 24 lt iBy pass Tray Set ea uv ADET 50 lt EX FCU BTS NC B25 NC Sho Nc ADOT 51 gt B19 GND 9 ARDF S Ca 2 ADEO 52 gt 820 9 6 ADOO FAX 53 GND B27 GND g GND 54 m 52 GND CN232 2 B5 o 55 lt B23 GND 4 2e Be 2 56 lt XARKD 1 824 GND 2408 924 diii 19 5 8 2 2 9 SW1 Lower 8 B 57 2 25 GND Cover Open A234 5 NC 5 2 58 lt XARKD 3 826 GND 3 515 mE N C 5 59 lt _XARKD 4 B27 lt PXDZ NC 60 lt XARKD5 B28 GND N C 61 lt XARKD 6 B29 TXD NC 62 lt XARKD 7 830 35 CN234 Eee 4 NG 63 GND 5 Al Naot LC 64 GND 5 AZ 2 Upper Paper NC 65 GND 3 1 110 Amount 1 E 90 qn NE tae 5 24 1 55 SE E ivo Original Width NC 2 PRINTER 68 EA 21 BB peper Paper a 22 GND S Amount 8 8 53 SES Ra
72. See the Input Check section for details 6 008 ADF Output Turns on the electrical components Check of the ADF individually for test purposes See the Output Check section for details 6 009 1 ADF Free Run Performs an ADF free run with two 1 Start Two sided sided Press 1 to start original This is a general free run controlled from the copier For more detailed free run modes see the DF manual 2 ADF Free Run Performs an ADF free run with stamp 1 Start Stamp mode Press 1 to start This is a general free run controlled from the copier For more detailed free run modes see the DF manual 4 37 SERVICE PROGRAM MODE 26 March 1998 Mode No Class 3 Function Settings 6 010 Stamp Position Adjusts the stamp position in the 3 5 3 5 Adjustment sub scan direction in facsimile mode 0 5 mm step Use the key to toggle between 0 mm and 6 105 Finisher Staple Adjusts the staple position in the 1 3 5 Position main scan direction when using the 0 5 mm step Adjustment 3 000 sheet finisher 0 0 mm 3 000 sheet Finisher Only pas zn key to toggle between A larger value causes the staple position to shift outward 6 113 1 Punch Hole Adjusts the punch hole position in 7 54 7 5 Position the sub scan direction for the punch 0 5 mm step Adjustment unit with two punch holes 0 mm 2 Punch Hole Use the key
73. Settings 1 Fusing Temperature Adjustment Paper Tray Adjusts the fusing temperature for paper fed from a paper tray 170 200 40 150 180 30 1 C step 185 C 40 165 C 30 2 Fusing Adjusts the fusing temperature for 170 200 40 Temperature paper fed from the by pass feed unit 160 190 30 Adjustment 1 C step By pass 185 C 40 175 C 30 1 106 Fusing Displays the fusing temperature Temperature Display 1 109 Fusing Nip Band Checks the fusing nip band 1 Start Check 0 Stop Refer to Nip Band Width Adjustment for more details 1 111 Paper Switch Adjusts the paper switch back timing 5 5 Back Timing Use this SP mode when paper often 1 mm step Duplex jams at the inverter gate in the 0 mm duplex unit r 2 001 1 Charge Roller Adjusts the voltage applied to the 1000 2000 E Bias Adjustment grid plate during copying 10 V step Copying After replacing the drum or charge 1630 V 30 roller change this value to the default 2 Charge Roller Adjusts the voltage applied to the 0 700 Bias Adjustment charge roller when making the Vsdp 10 V step ID sensor pattern ID sensor pattern for charge roller 350 V voltage correction The actual charge roller voltage is this value plus the value of SP2 001 1 Do not adjust 2 005 1 Charge Roller Adjusts the lower threshold value for 0 1 1 0 Bias Correction 1 the charge
74. Shorted 403 is displayed 7 2 2 SWITCHES Component CN Condition Symptom Symbol Right Lower 232 3 Open Doors Covers Open is displayed even if the 3 Cover SW1 PFB right lower cover is closed E Shorted The LCD goes blank when the lower cover is opened Main SW3 102 1 4 Open The machine does not turn on PSU Shorted The machine does not turn off Front Cover 219 11 Open Doors Covers Open is displayed even if the Safety SW4 IOB front cover is closed Shorted Doors Covers Open is not displayed even if the front cover is opened 7 25 BLOWN FUSE CONDITIONS 26 March 1998 7 3 BLOWN FUSE CONDITIONS F s Rating Symptom when turning on the main 115V 210 230V power switch Power Supply Board FU1 6 3A 125V 16 3A 250V Doors Covers Open is displayed FU2 6 3A 125V 6 3A 250V Doors Covers Open for the finisher is displayed FU3 4A 125V 4A 250V Paper end condition FU4 6 3A 125V 6 3A 250V SC121 is displayed FU5 6 3A 125V 6 250 One of SC302 or SC403 or SC405 is displayed FU101 15 125V No response FU102 8 125 250V FU103 2A 125V 1A 250V Normal operation optional heaters do not Work 7 26 B C G H J K M N
75. Stand by 230 V machine Less than 220 W h Less than 260 W h Without the optional heaters fax unit and printer controller NAD30S NAD30 NAD40 Note Maximum Less than 1 5 kW Less than 1 5 kW Without the optional Copying Less than 1 15 kW Less than 1 25 kW heaters fax unit Warm up Less than 1 05 kW Less than 1 15 kW and printer Stand by Less than 240 W h Less than 280 W h controller 1 3 SPECIFICATIONS 26 March 1998 Noise Emission Mainframe Only System 1 Sound Power Level Copying NAD30S NAD30 69 dB A 73 dB A NAD40 70 dB A 74 dB A Stand by NAD30S NAD30 42 dB A 44 dB A NAD40 42 dB A 44 dB A 2 Sound Pressure Level at the Operator s Position Copying NAD30S NAD30 52 dB A 60 dB A NAD40 56 dB A 62 dB A Stand by NAD30S NAD30 27 dB A 28 dB A NAD40 27 dB A 28 dB A NOTE 1 The above measurements were made in accordance with ISO 7779 2 Full system measurements do not include the optional fax unit and the printer controller 3 In the above stand by condition the polygon motor is not rotating 1 4 26 March 1998 PAPER EXIT TRAY SELECTION 1 2 PAPER EXIT TRAY SELECTION o M c B A3 DLT A231V508 WMF The machine allows selection between the paper tray exit trays Int Tray A standard output tray Int Tray 2 B optional one bin tray and Ext Tray C
76. TD sensor initial setting Vref toner density reference voltage will not be measured correctly vci 5 Er 2 on lt 5 ay og 6 4 5 TD SENSOR 1 Remove the development unit and empty all the developer Developer 2 Remove the TD sensor NOTE When installing the new TD sensor secure it with double sided tape 3 Pour new developer into the development unit and perform the TD sensor initial setting using SP2 801 NOTE When performing the TD sensor initial setting cover the toner entrance hole with a piece of paper see the above illustration TRANSFER UNIT 26 March 1998 6 5 TRANSFER UNIT 6 5 1 TRANSFER BELT UNIT C A230R501 WMF A A230R502 WMF NOTE Do not keep the right cover open for a long time to prevent the drum from being exposed to direct light When keeping the right cover open for a long time cover the drum with paper or remove the PCU then cover the PCU with paper 1 Open the right cover A 2 Release the release lever B then remove the transfer unit C 3 Remove the springs D 4 Remove the transfer belt unit E 1 hook NOTE Do not touch the transfer belt surface 6 28 26 March 1998 TRANSFER UNIT 6 5 2 TRANSFER BELT A230R504 WMF 1 Remove the transfer belt unit See Transfer Belt Unit Remove the belt drive gear A 3 Remove the screws B at both sides and turn the belt holder C until it is vertical 4 Remo
77. abnormal during a copy job the machine holds the GAIN factor constant GAIN is normally calculated from TD sensor readings to allow toner supply to vary with only pixel count for the rest of the copy job Then at the end of the copy job an SC code is generated and the machine must be repaired The ID sensor is checked every 10 copies If readings become abnormal an SC code is generated and the machine must be repaired If this happens during a copy job Vtref is not changed the copy job is allowed to finish and then the SC code is generated If spare parts are not available the technician can use SP 2 208 1 to temporarily put the machine in image pixel count mode Details of how the machine determines an abnormal sensor detection are in section 7 Troubleshooting 2 46 26 March 1998 DRUM CLEANING AND TONER RECYCLING 2 7 DRUM CLEANING AND TONER RECYCLING 2 7 1 DRUM CLEANING a os oo an e A231D507 WMF The cleaning blade A removes any toner remaining on the drum after the image is transferred to the paper This model uses a counter blade system The toner remaining on the drum is scraped off by the cleaning blade and is transferred to the toner collection coil B by the toner collection plate C The collar D on the cleaning blade bracket contacts the outer rim of cam gear E and this gear moves the cleaning blade from side to side This gear is the same cam gear that moves the cha
78. adjusting 1 step NAD40 only the black level at power up 116 This SP mode is for designer use only Do not use this SP mode 5 Digital Gain Checks the AGC gain value of the 0 255 Adjustment E ch white level for the EVEN channel 1 step after adjusting the white level at 0 power up This SP mode is for designer use only Do not use this SP mode 6 Digital Gain Checks the AGC gain value of the 0 255 Adjustment ch white level for the ODD channel after 1 step NAD40 only adjusting the white level at power up 0 This SP mode is for designer use only Do not use this SP mode 7 Analog Gain Checks the AGC gain value of the 0 255 Adjustment E ch white level for the EVEN channel 1 step after adjusting the white level at 40 power up This SP mode is for designer use only Do not use this SP mode 8 Analog Gain Checks the AGC gain value of the 0 255 Adjustment ch white level for the ODD channel after 1 step NAD40 only adjusting the white level at power up 40 This SP mode is for designer use only Do not use this SP mode 9 Standard White Checks the value of the standard 0 255 Level Display white level after adjusting the white 1 step level 110 This SP mode is for factory use only Do not use this SP mode 4 20 26 March 1998 SERVICE PROGRAM MODE Mode No yep Class 3 Function Se
79. from the motor 6 46 26 March 1998 PCBS 6 9 PCBS t A230R904 WMF 6 9 1 POWER PACK 1 Remove the connector cover A and rear cover B 4 screws 2 Remove the power pack C 3 screws 6 connectors 5 es on os ay oy 6 9 2 I O BOARD 1 Remove the connector cover A and rear cover B 4 screws 2 Remove the HDD unit modular connector bracket and expansion box if these option units have been installed Remove the I O board bracket D 2 screws all connectors 4 Remove the I O board 4 screws NOTE Make sure that the DIP switch settings on the new board are the same as those on the old board PCBS 26 March 1998 6 9 3 BICU BOARD Qr Fe Ie zt A231R524 WMF Remove the I O board bracket See I O Board Remove the stand rear cover B 2 screws Disconnect the SIFB C Remove the BICU board D 4 screws 1 stud all connectors Remove the NV RAM E from the old BICU board and install it on the new board For 230V machines Download the appropriate language software not needed for customers using English German or French Then select the correct language with SP5 009 if necessary switch the main power off on after changing this SP mode 26 March 1998 PCBS 6 9 4 PSU C A230R901 WMF vci 5 D es on Cs ay og A231R517 WMF Remove the conne
80. laser beam makes the main scan while drum rotation controls the sub scan The combined strength of both beams is 0 336 mW NAD30S and NAD30 0 430 mW NAD40 on the drum surface at a wavelength of 780 nm The polygon motor speed is as follows Motor Speed rpm 1 line cycle us Resolution NAD30S NAD40 NAD30S NAD40 NAD30 NAD30 400 dpi Approx 14170 Approx 18110 353 276 0 600 dpi Approx 21260 Approx 27170 391 2 dpi Fax image Approx 14400 Approx 18400 rotation 406 4 dpi Fax mm Approx 13860 Approx 17710 printing In previous models the mirror speed increased for higher resolutions However for this machine the line cycle time taken to output one main scan line of data to the laser diode varies also so there is no simple relationship between resolution and mirror speed 2 22 26 March 1998 LASER EXPOSURE 2 3 2 OPTICAL PATH G F a 2 oo an e C H A231D501 WMF The output path from the laser diode to the drum is shown above The LD unit A outputs two laser beams to the polygon mirror B through the cylindrical lens C and the shield glass D Each surface of the polygon mirror reflects two full main scan lines The laser beams go to the F theta mirror E mirror F and BTL barrel toroidal lens G Then these laser beams go to the drum through the toner shield glass H The laser sync
81. only Do not use this 0 Stop Adjustment LD1 SP mode 1 Start 4 10 26 March 1998 SERVICE PROGRAM MODE Mode No Class 1 Function Settings and 2 Class 3 2 103 6 LD Power Factory use only Do not use this 0 Stop Adjustment LD2 SP mode 1 Start 2 109 1 Laser Beam Pitch Input the laser beam pitch value for 8 260 Adjustment 400 dpi 400 dpi resolution After replacing the LD unit or replacing or clearing the NVRAM use this SP mode and SP2 109 3 to adjust the laser beam pitch Refer to Replacement and Adjustment Laser Beam Pitch Adjustment for details 4 pulses step 144 2 Laser Beam Pitch Input the laser beam pitch value for 28 280 Adjustment 600 600 dpi resolution 4 pulses step dpi After replacing the LD unit or 168 replacing or clearing the NVRAM use this SP mode and SP2 109 4 to adjust the laser beam pitch Refer to Replacement and Adjustment Laser Beam Pitch Adjustment for details 3 Laser Beam Pitch Initializes the laser beam pitch for 1 Start Initial Setting 400 dpi to the SP2 109 1 value 400 dpi Press 1 to initialize After inputting data for SP2 109 1 this SP must be performed 4 Laser Beam Pitch Initializes the laser beam pitch for 1 Start Initial Setting 600 dpi to the SP2 109 2 value 600 dpi Press 1 to initialize After inputting data for SP2 109 2 this SP must be performe
82. or Lower Paper Feed Unit Remove the paper height sensor A 1 connector Remove the paper end sensor B 1 connector Remove the relay sensor bracket C 1 screw 1 connector Remove the relay sensor D 26 March 1998 PAPER FEED 6 6 7 REGISTRATION SENSOR C D F A230R933 WMF Replacement Adjustment Remove the front cover rear cover and right rear cover Remove the PCU and development unit Remove the transfer belt unit and right cover See Transfer Belt and Right Cover Remove the inner cover A 2 screws Remove the front registration holder B 1 screw Remove the registration roller bushing C and front registration roller gear D 1 E ring 1 spring Remove the right cover switch bracket E 1 screw Remove the rear registration holder F 1 screw Remove the registration roller bushing G 1 E ring 1 spring PAPER FEED 26 March 1998 A230R934 WMF A230R935 WMF 10 Remove the guide plate A and registration roller B 1 spring 1 clip NOTE When reinstalling the clip C its position must be as shown 11 Remove the registration guide plate D 2 screws 1 connector 12 Remove the sensor bracket E 1 screw 13 Remove the registration sensor F 1 screw 1 connector 26 March 1998 FUSING 6 7 FUSING 6 7 1 FUSING UNIT NCAUTION Allow time for the unit to cool before doing the following procedure A230R601 WMF 1 Open t
83. roller correction 0 05 step Lower threshold When the value of Vsp Vsg is greater 0 85 than this value the charge roller voltage increases by 30 V e g from 500 to 530 2 Charge Roller Adjusts the upper threshold value for 0 1 1 0 Bias Correction 2 the charge roller correction 0 05 step Upper threshold When the value of Vsp Vsg is greater 0 90 than this value the charge roller voltage decreases by 30 V absolute value f 3 Charge Roller Adjusts the lower limit value for 1000 2000 Bias Correction 3 charge roller voltage correction 10 V step Lower limit 1630 V 4 Charge Roller Adjusts the upper limit value for 1000 2000 Bias Correction 4 charge roller voltage correction 10 V step Upper limit 2000 V 4 9 SERVICE PROGRAM MODE 26 March 1998 Mode No Cisse Function Settings 2 005 5 Charge Roller Adjusts the correction voltage 0 100 Bias Correction adjustment step size 10V Step Step 30 V 2 101 1 Leading Edge Adjusts the leading edge erase 0 0 9 0 Erase Margin margin 0 1 mm step Printing The specification is 3 2 mm See 3 0 mm Replacement and Adjustment Copy Adjustments for details 2 Trailing Edge Adjusts the trailing edge erase 0 0 9 0 Erase Margin margin 0 1 mm step Printing The specification is 2 2 mm 3 0 mm 3 Left Side Edge Adjusts the left side erase margin
84. sunlight and will protect it from light fatigue 9 Before pulling out the PCU place a sheet of paper under the PCU to catch any spilt toner 10 Dispose of used drums in accordance with local regulations 11 When installing a new drum in the PCU the following must be done in the stated order 1 Remove the protective sheet after securing the new drum in the drum unit 2 Make sure that the charge roller voltage supply is at the standard value SP2 001 1 3 Do the ID Sensor Initial Setting procedure SP 3 001 2 4 Do SP2 805 process initialization 12 When installing the PCU make sure that the PCU is set in the machine properly GENERAL CAUTIONS 26 March 1998 4 1 2 TRANSFER BELT UNIT 1 Replace the transfer belt every PM cycle 150K copies to avoid bad effects on the drum Never touch the transfer belt surface with bare hands Take care not to scratch the transfer belt as the surface is easily damaged Before installing the new transfer belt clean all the rollers and the inner part of the transfer belt with a dry cloth to prevent the belt from slipping 4 1 3 SCANNER UNIT 1 When installing the exposure glass make sure that the white paint is at the rear left corner Clean the exposure glass with alcohol or glass cleaner to reduce the amount of static electricity on the glass surface Use a cotton pad with water or a blower brush to clean the mirrors and lens Do not bend or crease the exposure lamp fla
85. threshold value for 0 255 detecting an edge area 1 step Do not change the value 128 19 Image Data Path Selects one of the following video data outputs which Application will be used for application 0 After image processing 1 After MSU 2 After gamma correction 3 After image scanning 4 Not output 5 Normal operation Do not change the value 20 Image Data Path Selects one of the following video data outputs which Printing will be used for printing After image processing After MSU After image overlay From application Test mode 1 Test mode 2 Test mode 3 Not output Normal operation Do not change the value 4 29 SERVICE PROGRAM MODE 26 March 1998 Mode No Class 1 and 2 Class 3 Function Settings 4 910 1 Data Compression Selects whether simple data compression is done or not Do not change the value 0 Yes 1 No Data Compression Threshold Selects the threshold level for image compression Do not change the value 0 255 1 step 8 Data Compression ABS Through Selects whether the ABS function is done or not Do not change the value 0 Yes 1 No 4 911 HDD Setting Media Test Checks for bad sectors on the hard disk that develop during machine use Press 1 to start This takes 4 minutes This SP mode should be done when an abnormal im
86. transferred from roller to drum varies with the temperature and humidity around the drum charge roller The lower the temperature or humidity is the higher the applied voltage required To compensate the machine uses the ID sensor to measure the effects of current environmental conditions For this measurement the process control parameters are balanced so that any small change in drum potential caused by environmental effects is reflected in a change in the amount of toner transferred to the drum This measurement is made immediately after the ID sensor pattern for toner density control Immediately after making ID sensor pattern A the charge roller voltage drops so that drum potential is reduced to 600V At the same time development bias goes back to 550V The drum potential is now slightly higher than the development bias so only a very small amount of toner transfers to the drum The ID sensor measures the density of this pattern B and the output voltage is known as Vsdp This voltage is compared with Vsg read from the bare drum at the same time 2 31 DRUM CHARGE 26 March 1998 If the humidity drops the drum potential goes up even if the charge roller voltage supply stays the same efficiency of voltage transfer decreases with increased humidity As a result more toner is transferred to ID sensor pattern B If the sensor output reaches a certain point the drum charge voltage will be reduced To determine whether to chang
87. used 57 Transfer Belt Clutch 28 Main Motor 58 61 Not used 29 Transport Motor Duplex 62 Quenching Lamp 30 Inverter Motor Reverse Duplex 63 Charge Roller Bias 31 Inverter Motor Forward Duplex 64 66 Not used 32 34 Not used 67 Development Bias 68 Not used 86 89 Not used 4 56 26 March 1998 SERVICE PROGRAM MODE No Description No Description 69 Transfer Belt Bias 90 Laser Diode 70 ID Sensor 91 Not used 71 74 Not used 92 Shift Tray Lift Motor Finishers 75 Exhaust Fan Motor 93 Jogger Motor 3 000 sheet Finisher Jogger Fence Motor 1 000 sheet Finisher 76 Cooling Fan Motor 94 Stapler Motor 3 000 sheet Finisher 77 Not used 95 Stack Feed Out Motor Finishers 78 Cooling Fan Motor Bridge Unit 96 Shift Motor Finishers 79 84 Not used 97 Stapler Rotation Motor 3 000 sheet Finisher 85 Mechanical Counter 98 99 Not used ADF Output Check SP6 008 Description Feed in Motor Forward Feed in Motor Reverse Transport Motor Forward Transport Motor Reverse Feed out Motor Exit Gate Solenoid Inverter Gate Solenoid DF Indicators Pick up Motor Forward Pick up Motor Reverse 2 l 4 2 6 SYSTEM PARAMETER AND DATA LISTS SMC LISTS 1 Access SP mode 5 990 and select the class 3 number corresponding to the list that you wish to print Press the key to access t
88. voltage 600 V can be adjusted with SP2 201 Correction for paper width and thickness bypass tray only The bypass tray can be used for narrower paper than the paper trays Also thicker paper can be used as well as OHP sheets In these cases some copy quality problems may occur To deal with this the development bias can be increased for paper fed from the bypass tray The voltage corrections are adjusted with SP 2 914 3 and 4 The width thresholds for these adjustments can be adjusted with 2 309 1 and 2 309 2 Development bias voltages Paper width from 216 mm to 297 mm SP2 201 1 Paper width from 150 mm to 216 mm SP2 201 1 50 V adj with SP2 914 4 Paper width below 150 mm SP2 201 1 200 V adj with SP2 914 3 Paper width limits 150 mm limit SP2 309 1 216 mm limit SP2 309 2 Similar voltage adjustments are available for charge roller input voltage and transfer current DEVELOPMENT 26 March 1998 2 6 5 TONER SUPPLY Toner bottle replenishment mechanism A231D504 WMF When a toner bottle is placed in the bottle holder unit A and the unit is pushed in completely pin B moves against the side C of the PCU and the toner shutter D is pulled out to open the bottle When the toner bottle holder lever E is put back in the original position the cap F on the toner bottle is pulled away and kept in place by the chuck G The toner supply mechanism transports toner from the bottle to the development unit Th
89. 0 5 gt 9 GND 9 lt XENLS 69 lt SD 0 gt 9 lt XOECRO gt Right Upper 15 15 gt 15 A15 N C aN gt 10 Pe gt 10 XEDS gt 70 lt 50 11 gt 10 lt gt Cover 16 HDT 16 GND 6 N C A16 N C XCS gt 12 REFCLK gt HE ENEON Z 3915 gt 2 2 1 16 GND Lara NC At gt gt lt gt gt 18 A18 Paper Tray Unit GND 11 Scanner XRDSYNC gt 13 GND 13 ENCO gt 73 5004 gt 13 A13 gt swe 19 GND 19 XAWLGT gt 19 GND Aig e Paper Tray 11 p SCLK gt 14 XDES gt 4 gt 74 5015 gt 14 A14 gt GND 20 GND A20 20 Paper Tray Unit GND 0124 A 15 GND 15 4 gt 75 5VE 15 WECRD gt sw4 21 DMRQ 21 XAWLSYC gt 21 21 Paper Tray Unit TXD gt 24 gt 0 24 A onp E gt H8 gt 76 PE NC 22 GND 22 GNI A22 N C 22 GND 22040 5 gt gt 4 A24 LCT GND 24 0 24 B GND 19 GND 9 lt XDEC 79 SVE 19 AIG gt Safety 5 XDIOR gt 25 lt M 25 N C A25 L T TXD E GND lt XDDS 80 0 20 A15 gt CN312 CN402 26 GND 26 XTRG gt 26 GND Bi CN451 502 GND lt 81 MDO gt 1 gt CN404 0406 27 lt ORDY 27 GND A27 TXD2 gt B2 JLower Paper Size 4 3 12_ 5 5V CLK __DECO T 82 MID 2 X E 3 28 GND A25 GND B3 lt Lower Paper Size 3 5 45V GND x 4 83 MID 3 23 lt
90. 0 0 9 0 Erase Margin 0 1 mm step Printing 2 0 mm The specification is 2 1 5 mm 4 Right Side Edge Adjusts the right side erase margin 0 0 9 0 Erase Margin 0 1 mm step Printing 2 0 mm The specification is 2 2 5 1 5 mm 5 Trailing Edge Adjusts the trailing edge erase 0 0 4 0 Erase Margin margin on the reverse side of duplex 0 1 mm step Back side copies 1 2 mm The specification is 2 2 mm 6 Left Side Erase Adjusts the left side erase margin in 0 0 9 0 Margin the reverse side of duplex copies 0 1 mm step Rear side The specification is 2 1 5 0 3 mm 7 Right Side Erase Adjusts the right side erase margin in 0 0 9 0 Margin the reverse side of duplex copies 0 1 mm step Rear side The specification is 2 2 5 1 5 0 3 2 103 1 LD Power Adjusts the power of LD1 for 400 dpi 127 127 Adjustment resolution 1 step LD1 400dpi Do not change the value 1 0 6 uW 30 1 0 8 uW 40 0 2 LD Power Adjusts the power of LD1 for 600 dpi 127 127 Adjustment resolution 1 step LD1 600dpi Do not change the value 1 0 6 uW 30 1 0 8 uW 40 0 3 LD Power Adjusts the power of LD2 for 400 dpi 127 127 Adjustment resolution 1 step LD2 400dpi Do not change the value 1 0 6 uW 30 1 0 8 uW 40 0 4 LD Power Adjusts the power of LD2 for 600 dpi 127 127 Adjustment resolution 1 step LD2 600dpi Do not change the value 1 0 6 uW 30 1 0 8 uW 40 0 5 LD Power Factory use
91. 00 93 87 82 71 65 50 25 71 65 50 35 Inch version 96 Inch version 96 400 200 155 129 400 200 155 129 121 100 93 85 78 121 100 93 85 78 73 65 50 25 73 65 50 32 Zoom Both versions Metric version 25 to 400 in 1 35 to 400 in 1 steps steps Inch version 32 to 400 in 1 steps Copying Speed 35 cpm 45 cpm Full size A4 11 x 8 5 sideways A4 11 x 8 5 sideways Repeat copy 19 cpm 22 cpm mode A3A1 x 17 A3 11 x 17 Resolution Scanning and Printing 400 dpi Gradation Scanning and Printing 256 levels Warm up Time Less than 855 Less than 100s 23 C 73 F First Copy Time Less than 3 9 Less than 3 2 s A4 11 x 8 5 1st Tray sideways Copy Number Ten key pad 1 to 999 Count up or Input count down 1 1 o o SPECIFICATIONS 26 March 1998 NAD30S NAD30 NAD40 Note Manual Image 5 steps Density Selection Automatic 60 s is the standard setting it can be changed with a Reset UP mode Auto Shut Off 60 min is the standard setting it can be changed with a UP mode Copy Paper Paper Tray 500 sheets up to 56 mm 2 2 x 2 The by pass Capacity By pass Feed 50 sheets up to 5 5 mm 0 2 feed unit is not standard for NAD30S Copy Tray A4 11 x 8 5 500 sheets Standard Capacity A3 B4 8 5 x 14 11 x 17 250 sheets copy tray Toner Cartridge exchange 700 g cartridge Replenishment Toner Yield
92. 04 WMF 3 Remove the front cover A and rear cover B When the Duplex Unit A687 will be installed Remove the indicated part of each cover C 5 Install the by pass feed unit D 4 screws 2 connectors Reinstall the front and rear covers Turn on the main power switch and check the copy image registration 3 40 26 March 1998 LCT INSTALLATION 3 11 LCT INSTALLATION 3 11 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Q ty lt 2 2 Stepped Screw M3X198 eiie e ee e isch 4 3 1 4 17 27 machines 1 E 5 Installation Procedure nenene nenene 1 E LCT INSTALLATION 26 March 1998 3 11 2 INSTALLATION PROCEDURE A2311507 WMF A2301502 WMF NCAUTION NOTE The paper tray unit A682 must be installed before installing the LCT 1 Unpack the LCT and remove the tapes 2 Open the right cover of the paper tray unit A 3 Open the lower right cover B and cut the holding band C NOTE When cutting the holding band the upper part of the band should be cut as shown Otherwise paper jams may occur 4 Remove the lower right cover then close the right cover A 5 Remove two caps D and a cover E 3 42 26 March 1998 LCT INSTALLATION A e S 5 S
93. 07 LCT main motor lock optional LCT Definition C A main motor lock signal is detected for more than 0 5 s during rotation Possible causes e LCT main motor defective e Too much load on the drive mechanism e Poor motor connector connection 7 13 SERVICE CALL CONDITIONS 26 March 1998 C510 1 LCT tray malfunction 1 Definition C 1 The LCT lift sensor does not activate for more than 18 seconds after the LCT lift motor turned on 2 The LCT lower limit sensor does not activate for more than 18 seconds after the LCT lift motor turned on 3 The LCT lift sensor is already activated when the LCT lift motor turns on Possible causes LCT lift motor defective e Pick up solenoid defective Poor motor connector connection Poor pick up solenoid connector connection e Paper end sensor defective LCT lift sensor defective LCT lower limit sensor defective C510 2 LCT tray malfunction 2 Definition C 1 During paper lifting the LCT lift sensor does not activate for more than 1 5 seconds after the paper end sensor turned on If this condition occurs four times consecutively this SC will be generated 2 During paper lifting after the top of the paper reaches the upper limit position the paper is lowered until the LCT lift sensor is de activated At this time the LCT lift sensor does not de activate for more than 5 seconds Possible causes e LCT lift motor defective e Pick up solenoid defec
94. 1998 PAPER FEED 2 8 6 PAPER REGISTRATION 55 iB 25 9 b A230D705 WMF Main motor A rotation is transmitted to the registration clutch gear B located on the lower registration roller shaft through a train of gears The registration sensor C is positioned just before the registration rollers When the paper leading edge activates the registration sensor the registration clutch is off and the registration rollers are not turning However the relay clutch E stays on for a bit longer This delay allows time for the paper to press against the registration rollers and buckle slightly to correct skew Then the registration clutch energizes and the relay clutch re energizes at the proper time to align the paper with the image on the drum The registration and relay rollers feed the paper to the image transfer section The registration sensor is also used for paper misfeed detection PAPER FEED 26 March 1998 2 8 7 PAPER FEED AND JAM TIMING NAD40 From 2nd Paper Tray A4 sideways 0 1000 2000 3000 ms Main Motor 2777 Relay Clutch T1 7777777777777 YL Paper Feed Clutch 1 J1 J2 Lower Relay Sn UM MYLES f 1 2 Upper Relay Sn 7 M PL J1 J2 1 1 ZZ Registration Sn F Signal gale Registration 4 T4 Clutch 771111 A231D537 WMF T1 The relay clutc
95. 2 1 122 2 115 9 8 O 7 115 6 O 5 CN101 A1 CN101 4 4 115 3 116 9 8 7 116 6 5 4 CN116 3 O 2 1 CN101 AT CN101 B1 B2 B3 CN101 B4 B5 B6 CN101 B7 B8 B9 CN107 A1 CN107 A4 CN107 B1 CN107 B4 CN108 1 0 GND2 Main Board 1 V5 Upper Lift Sensor 5 5V 0 GND2 0 GND2 V5 Upper Paper End Sensor 5 5V GND 1 0 GND 1 0 GND 1 0 24V 24 24V 24 A5 Upper Relay Sensor 5 5V 0 GND2 0 GND2 0 GND2 0 GND2 V5 Lower Lift Sensor 5 5V CN102 1 CN117 15 1 1 RES Co GND 0 O GND 1 0 O 24V 24 O 24V 24 O 24V 24 O 24V 24 O GND2 0 O 1 A 1 V5 Lower Paper End Sensor 5 5V 1 1 1 1 gt gt 1 1 45 Lower Relay Sensor 5 5V N A i N O O O O O O O O O A5 Upper Paper Height 1 Sensor 5 5V 0 GND2 0 GND2 0 GND2 Upper Paper A5 Height 2 Sensor CN104 1 CN118 4 Lower Tray W24 O Lower Tray Upper Tray W24 o 3 2 Upper Tray V24 CN119 2 Tray Lift Lower Paper Motor A5 Height 1 Sensor CN104 5 P 24V 24 0 Lower Paper 1 Feed cl 1724 O Lower Paper Feed Clutch
96. 2 Sensor 5 5V CN121 3 CN108 1 2 1 0 GND2 A5 Side Fence Position Sensor CN119 3 CN108 4 2 1 O 0 GND2 A5 LCT Set Sensor 5 5V A683 Main Board PCB1 24V 2410 CN110 A1 24V 24 24V 24 GND1 0 GND1 0 GND1 0 GND1 0 GND1 0 GND2 0 GND1 0 GND1 0 GND 110 24V 24 24V 24 24V 24 24V 24 GND2 0 Q 0 0 O 0 CW W5 CCW A5 0 GND2 ON OFF W5 O 2 Lower Limit E A5 Sensor 5 5V gt Lift Motor W24 O 3 Lift Motor W24 O CN120 3 CN108 7 O 24 24V 724 Tray Cover Switch A24 24V Pick up Solenoid W24 O CN127 3 CN106 1 CN127 2 CN127 1 W5 LED 24V 24 O 5 5V Paper Feed Clutch W24 O 0 GND2 O W5 Down Switch 24V 24 O Relay Clutch W24 SYMBOL TABLE elay Clutch W24 O Puise Signa A Active High v _ Active Low Ti CN106 5 6 CN106 7 8 CN105 3 4 CN105 1 2 CN124 2 1 125 2 1 CN126 2 O 1 127 2 1 Lift Motor Pick up Solenoid Paper Feed Clutch Relay Clutch 13 LCT A683 ELECTRICAL COMPONENT LAYOUT symbot No Proe Motors Sensors S2 14 Relay S4 9 LowerLimit 2 S5 4 PaperHeightt E2 S7 6 PaperHeight3 F2 59 8 Side Fence Position 2 Switches olenoid SOL1 Magnetic Clutches Paper Feed
97. 2 screws 1 bushing Remove the second paper feed clutch bracket B 2 screws 1 bushing Remove the drive bracket C 2 screws 1 spring 1 bearing Remove the relay clutch D 1 connector 5 Er on Cs og Remove the upper paper feed clutch E 1 connector Remove the lower paper feed clutch F 1 connector AD Oe UT eo eS PAPER FEED 26 March 1998 6 6 4 UPPER PAPER FEED UNIT A230R910 wmf A230R911 WMF 1 Remove the upper paper feed clutch A See Relay Upper Paper Feed Lower Paper Feed Clutches Remove the lower right cover See Lower Right Cover Lower Rear Cover Remove three relay gears B Remove the upper paper feed unit C 2 screws 1 connector 6 34 26 March 1998 PAPER FEED 6 6 5 LOWER PAPER FEED UNIT DU 95 Oh ee a A230R912 WMF 2 22 5 es on og A230R913 WMF Remove the lower paper feed clutch A See Relay Upper Paper Feed Lower Paper Feed Clutches Remove two relay gears B Remove the paper trays Remove the lower right cover See Lower Right Cover Lower Rear Cover Remove the cover C 2 screws Remove the gear D Remove the lower paper feed unit E 2 screws 1 connector 6 35 PAPER FEED 26 March 1998 6 6 6 PAPER END PAPER HEIGHT RELAY SENSORS Oh cube A B A230R914 WMF Remove the appropriate paper feed unit Upper
98. 403 1 SC History Latest 2 SC History 2nd Latest 3 SC History 8rd Latest 4 SC History 4th Latest 5 SC History 5th Latest 6 SC History 6th Latest 7 SC History 7th Latest Displays the latest 10 service call codes 4 42 26 March 1998 SERVICE PROGRAM MODE Mode No Class 3 Function Settings 7 403 8 SC History Displays the latest 10 service call 8th Latest codes 9 SC History 9th Latest 10 SC History 10th Latest 7 501 Total Jam Counter Displays the total number of copy jams and original jams 7 502 Total Copy Jam Displays the total number of copy Counter jams 7 503 Total Original Jam Displays the total number of original Counter jams 7 504 1 Total Copy Jam by Displays the total number of copy Location At Power On 3 Total Copy Jam by Location 1st Paper Tray 4 Total Copy Jam by Location 2nd Paper Tray 5 Total Copy Jam by Location 8rd Paper Tray 6 Total Copy Jam by Location 4th Paper Tray 7 Total Copy Jam by Location LCT jams by location These are paper non feed jams 8 Total Jam by Location Upper Relay Sensor 9 Total Copy Jam by Location Lower Relay Sensor 10 Total Copy Jam by Location Upper Relay Sensor Op PTU 13
99. 5 a epe o X di scr R Sensor 3 4 3 4 O O O 0 GND2 CN521 CN520 SUE TABLE NEC uut m oc ES 25 9 45 Exit Sensor gt Signal Direction Sensor 8 10 3 8 GND2 Active High W Active Low Voltage T T AUTO DOCUMENT FEEDER A680 ELECTRICAL COMPONENT LAYOUT symbot Ne peseripton Prop Motors Mi 6 Pickup M3 8 rranspotBelt M4 12 Feedou Sensors 7 Feed Cover Exit Cover NIM ayo pa slo olenoids SOL1 SOL2 lutch Exit Gate 0 Inverter Gate ace ary TIO eja 2 Transport Roller PCB1 9 Main EDs LED1 4 Ready Q13 79 0 gt 1 2 3 4 5 6 7 8 9 10 11 12 13 14 POINT TO POINT DIAGRAM FINISHER 1 000 681 A B Main Board PCB1 CN335 3 CN410 3 115 1 CN180 12 CN255 1 O W5 Entrance Sensor r gt Motor W24 O O CNAS O E 11 E O 1 o d O 5 5V Motor 72410 3 i 8 5 5 t gt Motor W24 O O O CN340 3 i Shift Tray 1 0 GND2 Cartridge Set Switch W5 O O Spe 2 Lower 11 75 Shift Tray Lower Limit Sensor Staple End Switch W5 O O 3 e eee 3 i 3 10 10 Stapler Set W5 O O O CN345 3 CN115 8 2 11 11 2 2 9 4 12 12 Half turn 12 07 75 Shift Tray Hal
100. 61 DMT 6r ARKO 62 OMIT 22 3 COND 63 sa Dubio OMT 65 8 ND COMI 64 pmm 67 E ND CoM 55 ons DHE 6 Cand COMI 6 3 on OMB 6 r 0759 87 or one woe 57 8 F UT 85 5 ono DNS 65 e ROF UFXDS 5 6 ss DHE 777 70 70 owo TEE 70 7i NC NC 7 7 woz ONDE 7i 77 RINGING RTRG 72 ND COM Son BO 74 77 E 357 77 VOR Tv 75 75 E EU 75 78 NOSE 75 UCR DROIS 7 12 12 lt DRAT DROT 78 VCA 12V VCA 12V 78 78 lt ANTJBIG INTJBIG 78 78 78 7 con 78 80 VARGEN 80 80 cowi COMI jen CN322 CN324 CN334 CN335 1 OND com T T GPS gt 2 cowi 2 GND z 3 CPATE E sono 07 13 ije eo 3 4 Par 2 4 PDB CPATE CPA ons 5 2 EE er 5 8 Pas 2 5 52 216 7 escono cROMCSO 7 7 CPA 7 ons 05 217 3 5 CPATS 8 Dios Soe WRD CAES bee CPAT 1 10 CPNT CPATT 2 10 Dn p 11 S EU 11 Tons 32 5 CPAS 12 12 EU EU 12 CPAT 1 WT 53 LE T7 5 WT OM 34 a ono D 15 Swe sR 35 15
101. 7 5 24 4 E 0 GND2 RUE e uec Shift Tray Exit Motor A 24 gt 0 24 J9 2 fo Shift Tray GREG 0 Shift Tray Exit Motor W24 0 24 P gag qas 22 E Exit Motor E 3 0 GND2 7 2 G 13 2 2 O 75 Upper Tray Paper Limit Sensor Exit Motor B 7247230 241 9 o CN356 CN256 CN106 Or Stack Feed out Motor v24 GENAI CN2145 5 Sak 04 10 0 GND2 Stack Feed out Motor 924142 o A 9 5 2 20 29 yb 95 Shift Tray Exit Sensor Stack Feed out Motor F S 0 12 og 2 2o bq 3 36 8 bis sv Stack Feed out Motor F S 0 12 04 CN316 206 CN106 EM 8 bist sv 115 CN215 CN315 11 5 2 26 5 yd 0 GND2 Shift Motor W24 Shift 043 36 4 O AS Paper Height 1 Sensor gt 24v 410 2 CN306 206 CN106 b 3 bist sv 10 6 2 2 y 4 0 GND2 24 CN115 3__ 215 2 SW2 Shift Tray 043 1__ 45 Paper Height 2 Sensor Shift Tray Upper Limit Switch 24 Switch 1 2 caer 4 15 5 Bes Stapler S15 45 Shift Tray Lower Limit 1 Sensor 24V 24 Junction 410 GND2 Q Gate hag CN257 1 CN107 6 ji sv pone E ositionin Sio a eee g Roller 3 41 0 GND2 Positioning Roller Sol W24 o Solenoid CN307 207 CN107 1o 5__ 15 5V CN118 1 218 7 2 2 2 24V A
102. 9 USED TONER 1 The used toner in the transfer belt unit should be emptied at every PM cycle but we recommend checking the amount of used toner at every EM 2 Dispose of used toner in accordance with local regulations Never throw toner into an open flame for toner dust may ignite 4 4 26 March 1998 SERVICE PROGRAM MODE 4 2 SERVICE PROGRAM MODE 4 2 1 SERVICE PROGRAM MODE OPERATION The service program SP mode is used to check electrical data change modes and adjust values Service Program Access Procedure Entering SP mode 1 Press the following keys in sequence gt 1 gt Lo gt gt NOTE Hold the key for more than 3 seconds 2 Amenu of SP modes is displayed on the LCD SP Mode Select number 1 Copy 2 Fax Ver 13 1 5 A321M501 WMF NOTE 1 The installed applications appear as 1 Copy 2 Fax 3 Printer If an application is not installed the application name does not appear 2 The meaning of the bottom line is as follows e Ver 13 1 5 is the BICU board software version 3 Press the number for the application which you need e g press 1 for copier Then the application s SP mode display will appear as shown Serviceman SP XXXX XXX SP Mode Class 1 No Select Class 1 No Feed gt fPre Inet ext A321M500 WMF Exiting SP mode 1 Press the Back and Exit keys until the standby mode display appears 4 5 SERVICE PROGRAM MO
103. A Leading Edge Registration B Side to side Registration A231R508 WMF NOTE Make a temporary test chart as shown above using A3 DLT paper 1 Place the temporary test chart on the ADF and make a copy from one of the feed stations 2 Check the registration and adjust using the following SP modes if necessary SP mode Side to side Registration SP6 006 1 Leading Edge Registration Simplex SP6 006 2 Leading Edge Registration Duplex front SP6 006 3 Leading Edge Registration Duplex rear SP6 006 4 6 56 26 March 1998 7 TROUBLESHOOTING 7 1 SERVICE CALL CONDITIONS 7 1 1 SUMMARY There are 4 levels of service call conditions SERVICE CALL CONDITIONS Level Definition Reset Procedure A To prevent the machine from being damaged Enter SP mode then turn the the SC can only be reset by a service main power switch off and representative see the note below The on copier cannot be operated at all B The SC can be reset by turning the main Turn the operation switch or power switch off and on if the SC was caused main power switch off and by incorrect sensor detection on A level B SC can only be reset by turning the main power switch off and on The copier be operated as usual except Turn the operation switch off for the unit related to the service call and on D The SC history is updated The machine can The SC will not displayed All be operated as usual t
104. Copies by Copy Mode Photo Total Copies by Copy Mode Generation Total Copies by Copy Mode Light Original Total Copies by Copy Mode Duplex Total Copies by Copy Mode ADF Total Copies by Copy Mode Double Copy Total Copies by Copy Mode 2 sided Original Total Copies by Copy Mode Interrupt Displays the total number of prints by copy mode 4 41 SERVICE PROGRAM MODE 26 March 1998 Mode No Class 1 and 2 Class 3 Function Settings 7 304 11 Total Copies by Copy Mode Archive File 12 Total Copies by Copy Mode 1 sided to 2 sided 13 Total Copies by Copy Mode 2 sided to 2 sided 14 Total Copies by Copy Mode 2 sided to 1 sided 15 Total Copies by Copy Mode Book to 2 sided Displays the total number of prints by copy mode 7 305 Total Copies by Multiple Copy 1 to 1 2 Total Copies by Multiple Copy 1 to 2 5 Total Copies by Multiple Copy 1 to 6 10 4 Total Copies by Multiple Copy 1 to 11 20 5 Total Copies by Multiple Copy 1 to 21 99 6 Total Copies by Multiple Copy 1 to 100 Displays the total number of prints by multiple copy quantity 7 401 Total SC Counter Displays the total number of service calls that have occurred 7
105. Copy Setting Table 1 General 01 APS Priority Features 02 AID Priority 03 Original Priority 04 Show All Keys 05 Maximum Copy Q ty 06 Original Beeper 07 Photo Mode 08 Reproduction Ratio 09 Slip Sheet Tray 10 Duplex Priority 11 Auto Reset 12 Density Pattern 13 Initial Mode Set 14 Management Setting 1 Counter Reset 2 Clear Code Counter 3 Register User Code 4 Change Delete User Code 5 Counter List Print 2 Copy 2 Adjust Image 01 Erase Border 02 Erase Center 03 Margin Adjust Front 04 Margin Adjust Back 05 Double Copy 06 Combine Copy 07 Image Repeat 08 Booklet Original 3 Input Output 01 Duplex Auto Eject 02 Combine Auto Eject 03 Original Count 04 SADF Auto Reset 05 Rotate Sort 06 Sort 07 Stack 08 Memory Full Auto Sort 09 Auto Sort Mode 4 Shortcut Keys 4 66 26 March 1998 TEST POINTS DIP SWITCHES LEDS 4 5 TEST POINTS DIP SWITCHES LEDS 4 5 1 DIP SWITCHES Board DIP SW101 No Function ON OFF 1 Copy Speed 35 cpm 180 mm s 45 cpm 230 mm s 2 Jam Detection Off On see Note 1 3 SCGeneration Disabled Enabled 4 Not used Keep at OFF 5 Not used Keep at OFF 6 Destination Off Japan On N America Off Europe On Not used 7 O O NOTE 1 Disabling the jam detection i
106. DE 26 March 1998 Accessing Copy Mode from within an SP Mode 1 Press the Interrupt key 2 Select the appropriate copy mode and make trial copies 3 To return to the SP mode press the Interrupt key again Selecting the Program Number Serviceman SP 2001 XXX SP Mode Class 2 No Select Class 2 No 001 lt Charge Corona Bias Adj gt Jf A321M502 WMF Program numbers are composed of two or three levels To input the required program number select each program level in sequence 1 Select the 1st level program number at the ten key pad and press the key or OK key NOTE The 1st level program number can be selected using the arrow keys or Prev key or Next key Select the 2nd level program number at the ten key pad and press the key or OK key NOTE The 2nd level program number can be selected using the arrow keys or Prev key or Next key If there any are 3rd level programs in the SP mode they can be selected the same way as the 1st and 2nd level SP modes NOTE The 3rd level program number can be selected using the arrow keys or Prev key or Next key Inputting a Value or Setting for an SP Mode 1 2 Enter the required program mode as explained above Enter the required setting using the ten key pad then press the key or OK key NOTE 1 If you forget to press the key or OK key the previous value re
107. ETTING AND COPY SETTING UP MODE RESET System Setting Reset The system settings in the UP mode can be reset to their default Using the following procedure Confirm that the machine is in the copier standby mode Press the User Tool key Holding key and press 1 using ten key Bue qe x The confirmation message will be displayed then press Yes Copy Setting Reset The copy settings in the UP mode can be reset to their default Using the following procedure 1 Confirm that the machine is in the copier standby mode 2 Press the User Tool key 3 Holding key and press 2 using ten key 4 The confirmation message will be displayed then press Yes 26 March 1998 PROGRAM DOWNLOAD 4 3 PROGRAM DOWNLOAD In this machine the BICU software is upgraded using a flash memory card There are two program download procedures One downloads from the flash memory card to the BICU The other downloads from the BICU to a flash memory card NOTE The procedure for how to write the source software data from a flash memory card writer to a flash memory card is described in the SwapBox FTL manual Downloading to the BICU A230R919 WMF Turn off the main power switch Remove the flash memory card cover A Plug the flash memory card B into the card slot NOTE Make sure that the surface printed B faces the front of the machine 4 Turn on the main power switch Flash Card Utili
108. Image Enhancement Kit HDD Option A691 Key Counter Bracket Option A674 14 Expansion Box Option A692 Fax Unit Option A693 ISDN Unit Option A816 SAF Memory HDD Option A818 10 Fax Fax Feature Expander Option 400 dpi High Resolution Option A818 12 Handset Option North America only A646 Stamp Unit Option A813 1 7 2 MACHINE CONFIGURATION 1 3 2 INSTALLABLE OPTION TABLE Copier options 26 March 1998 Standard O Available A Requires another option X Not available Option NAD30 S ARDF Platen Cover Paper Tray Unit LCT A A A Requires the paper tray unit By pass Feed Unit Duplex Unit A Requires the interchange unit and electrical sort kit Interchange Unit 1 bin Tray A Requires the interchange unit Bridge Unit 1 000 sheet Finisher A A A Requires the paper tray unit and bridge unit 3 000 sheet Finisher X X A Requires the paper tray unit and bridge unit Punch Unit X X Requires the 3000 sheet finisher External Output Tray A A Requires the bridge unit Electrical Sort Kit 8 MB Memory Image Enhancement A Requires the electrical sort kit Kit HDD 8 MB Key Counter Bracket Expansion Box It is required only when the fax option and or printer
109. M ADF A680 a gt Main Board PCB1 24V 2410 100 CN470 1 CN210 3 2 Widthi 8 6 Z vate cuna LM 24V 24 0 5 JT Oh 5 GND1 0 o CN460 1 CN210 6 P Original og dep TIS Original Wi a Width 2 sg 0 2 5 TIS Original Width 2 GND2 010 N110 2 Sense Sensor o 0 GND2 TXDO GND2 010 RXDo E Ouais 450 1 210 9 bis sv He 2001 z Width 3 S10 Original Width 3 Sensor 24V A 24166 gt 9900 Lo Sensor dio GND2 24V B 24 o 2o F Pick up Motor 24 gt 0 24 S 0 Pick up F Pick up Motor 24 gt 0 24 l Ose Motor Feed CN410 1 CN200 9 5 5V Pick up Motor 424 0 4 6 522 E DNE ME e OE 1 117 G Sensor 3 dio GND2 G 24V A 2419 5 24 O O 490 1 220 3 15 5V Feed in Motor Ye 4 ESTE LE _ Feed in Ea T Feed in Moter ATW24 0 24 5 5 H Set S3 o O W5 Original Set Sensor gt O Motor Sencar Feed in Motor 24 5 0 24 ___ 6____ 7 _ Feed in Moter B W24 0 24 7 11 ue 0 pos I CN50 1 cN240 6 O5 sv zavin 24 gt CNS10 8_CN610 3 Cover S14 Gg ias Exit Cover Sensor A08 ay Sensor 3 4 610 GND2 ransport Motor A __ 11____ LN Teron Transport Moter 24 0 24 F 5 gt
110. MF EP A B D A2301765 WMF 4 Install the spacer A thickness 2 mm NOTE There are three spacers in the accessory box Do not lose the other two spacers 1 mm because they are used for adjusting the punch hole position Install the punch unit B and secure it with a long stepped screw C Install the punch unit knob D 1 screw 7 Secure the rear of the punch unit 2 screws 3 54 26 March 1998 PUNCH UNIT INSTALLATION Installation A2301767 WMF A2311511 WMF A2311512 WMF 8 Install the sensor bracket A 1 short stepped screw 1 spring 9 Connect the harnesses B NOTE 1 The harness binders C must not be between the harness clamps D 2 The harness binder E must be positioned to the left of the harness clamp 10 When a three punch hole unit is installed Change switch 1 of DIP SW 100 on the finisher control board to ON 11 Slide the hopper F into the finisher 12 Reassemble the finisher and attach the 3 000 sheet finisher to the copier then check the punch unit function PLATEN COVER INSTALLATION 26 March 1998 3 15 PLATEN COVER INSTALLATION A2311526 WMF 1 Install the two stud screws A on the top cover as shown 2 Position the platen cover bracket B on the stud screws and slide the platen cover C to the left 3 56 26 March 1998 IMAGE ENHACEMENT KIT HDD INSTALLATION 3 16 IMAGE ENHACEMENT KIT HDD
111. MODE Mode No Class 1 and 2 Class 3 Function Settings 2 209 2 Toner Supply Correction Coefficient Displays the toner supply correction coefficient K It can also be used to adjust K but the value is changed again when Vt is measured for the next copy The toner supply rate depends on the amount of toner in the toner bottle This change is corrected using this coefficient This SP can be used to check the toner supply condition In general the lower the value of the lower the toner density 0 25 3 00 0 25 step 3 00 2 210 ID Detection Interval Changes the interval for making the ID sensor pattern VSP VSG detection If the user normally makes copies with a high proportion of black reduce the interval 10 200 1 copy step 10 copies 2 213 Number of Copies After Toner Near end Condition Selects the number of copies can be made after entering a toner near end condition If the user normally makes copies with a high proportion of black reduce the interval 0 90 copies 1 Unlimited 2 10 copies 2 220 VREF Manual Setting Adjust the TD sensor reference voltage VREF Change this value after replacing the development unit with another one that already contains toner For example when using a development unit from another machine for test purposes do the following 1 Check the value of SP2 220 in both the machine contai
112. MSU Possible causes e Software defective e Poor connection between BICU and MSU 5 981 HDD response error Definition B The HDD control board does not generate any response when the IPU sends a read write signal to the MSU Possible causes e Software defective e Poor connection between BICU and MSU e HDD defective 5 982 HDD construction error Definition B 1 HDD has been installed without the electric sort kit SIMM memory 2 AHDD that does not have the correct specifications has been installed Possible causes e Hard disk defective e Incorrect hard disk type e The electric sort kit is not installed SC990 Software performance error Definition 87 The software performs an unexpected function Possible causes e Software defective A og Qs 30 22 When this SC occurs the name address and data will be stored in the NVRAM These data can be checked by entering SP mode then pressing 0 Note the above data and the situation in which this SC occurs Then report the data and conditions to your technical control centre ELECTRICAL COMPONENT DEFECTS 26 March 1998 7 2 ELECTRICAL COMPONENT DEFECTS 7 2 1 SENSORS Component Symbol CN Condition Symptom Scanner Home 505 5 Open SC121 is displayed Position 1 SIB Shorted SC120 is displayed Platen Cover 505 8 Open APS and ARE do not
113. NAD30 40 Machine code A230 A231 and A232 SERVICE MANUAL Z IMPORTANT SAFETY NOTICES PREVENTION OF PHYSICAL INJURY 1 Before disassembling or assembling parts of the copier and peripherals make sure that the copier power cord is unplugged The wall outlet should be near the copier and easily accessible Note that some components of the copier and the paper tray unit are supplied with electrical voltage even if the main power switch is turned off If any adjustment or operation check has to be made with exterior covers off or open while the main switch is turned on keep hands away from electrified or mechanically driven components If the Start key is pressed before the copier completes the warm up period the Start key starts blinking red and green alternatively keep hands away from the mechanical and the electrical components as the copier starts making copies as soon as the warm up period is completed The inside and the metal parts of the fusing unit become extremely hot while the copier is operating Be careful to avoid touching those components with your bare hands HEALTH SAFETY CONDITIONS Never operate the copier without the ozone filters installed Always replace the ozone filters with the specified ones at the specified intervals Toner and developer are non toxic but if you get either of them in your eyes by accident it may cause temporary eye discomfort Try to remove with eye drops or flush with wat
114. ON 3 14 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Q ty T Spacer 2 MM 1 2 QD ACER T 2 3 Stepped Screw Short 1 4 Stepped Screw 1 5 P nch Unit ITIOD la eae A ce an oa 1 b SPINO saree tet ae eee 1 7 Hafftiess auti ER REV UM MR E UOS 1 B Haltiess SOIT tana rie oii 1 SR ROPPO ETE Ce eee wee 1 10 Purich Position 9 3 ee p axe 1 11 Tapping Screw 4 10 2 12 Screw with Flat Washer 4 6 1 13 INES MT TT TTL TRITT 1 26 March 1998 PUNCH UNIT INSTALLATION 3 14 2 INSTALLATION PROCEDURE e S 5 S A2301761 WMF A2301763 WMF NCAUTION Unplug the copier power cord and remove the 3 000 sheet finisher from the copier before starting the following procedure 1 Unpack the punch unit and remove the shipping retainers A 4 screws and B 1 screw Open the front door and remove the hopper cover C 2 screws 3 Remove the finisher rear cover 2 screws and remove the transport guide plate D 4 screws PUNCH UNIT INSTALLATION 26 March 1998 A2311510 W
115. ON CLUTCH AND TRANSFER BELT CLUTCH A230R905 WMF A230R906 WMF 1 Remove the connector cover A and rear cover B 4 screws 2 If the optional LCT has been installed Remove the harness cover C 1 screw and disconnect the LCT interface harnesses D 3 Remove the right rear cover E 2 screws Remove the power pack bracket F 2 screws 6 connectors 5 Remove the flywheel G 3 screws NOTE One flywheel is used for NAD30S and NAD30 Two flywheels are used for NAD40 Remove the registration clutch H 1 E ring 1 connector 7 Remove the transfer belt clutch assembly I 2 screws 2 connectors 26 March 1998 DRIVE AREA 6 8 2 MAIN MOTOR A230R907 WMF E 5 Er on Cs ay og Remove the connector cover A and rear cover B 4 screws 2 Remove the power pack bracket and fly wheel See Registration Clutch and Transfer Belt Clutch 3 Remove the bracket 3 screws Remove the timing belt D 5 Remove the main motor E 8 screws 2 connectors 6 45 DRIVE AREA 26 March 1998 6 8 3 TONER BOTTLE MOTOR Oe ee A230R922 WMF Release the toner bottle holder lever A then slide out the toner bottle holder B Remove the toner bottle B Remove the holder stopper C then take out the toner bottle holder Remove the motor harness from two wire clamps D Remove the toner bottle motor E 2 hooks Disconnect the harness
116. P 1 6 Rear Gover e Dr Der DRIED ER DRE DR ERR ARMEN EE 1 1 Br BUSHING 2 PE I 2 TO SNAP 1 112 Screw Dicite cata ditas 1 12 Screw REC ements 5 13 Screw 0 4 QA gr rU 1 15 Installation Procedures o ia ai E in ak ala ak x ERA MER RR HAE 1 26 March 1998 DUPLEX UNIT INSTALLATION 3 9 2 INSTALLATION PROCEDURE e S 5 S A2301655 WMF NCAUTION Unplug the main machine power cord before starting the following procedure NOTE The interchange unit A690 must be installed before installing this duplex unit 1 Unpack the duplex unit and remove the tapes 2 Open the upper right cover A and install two springs B two bushings C and roller D DUPLEX UNIT INSTALLATION 26 March 1998 A2301656 WMF A2301657 WMF When the By pass Feed Unit A689 has not been installed do steps 3 to 7 Remove the covers A Install the duplex unit stand B 4 screws Install the stand cover C 2 screws Remove the indicated parts of the front cover D and the rear cover E es 49 Install the front and rear covers 1 screw each 3 36 26 March 1998 DUPLEX UNIT INSTALLATION A2301603 WMF 5 A2301652 WMF When the By pass Feed Unit A689 has been
117. SHER INSTALLATION 26 March 1998 A2301704 WMF A2301705 WMF 2 Install the two screws A loosely 3 Hang the front stand B and rear stand C on the screws which were installed in step 2 4 Secure the front and rear stands 6 screws including the two screws A 5 Cut away a part of the main power switch cover D 6 Pull out the drawer at the front of the finisher using handle E to pull out the stapler unit IIN 7 Draw out the locking lever F 1 screw 8 Align the finisher on the stands and lock it in place by pushing the locking lever 9 Secure the locking lever 1 screw and push the stapler unit into the finisher 26 March 1998 1 000 SHEET FINISHER INSTALLATION i i 5 Ld o A2301706 WMF 10 Secure the finisher 1 screw 11 Adjust the securing knobs A under the front and rear stands until the finisher is perpendicular to the floor 12 Install the shift tray B 1 snap ring NOTE Make sure that the three pegs C fit into the slots D properly 13 Connect the finisher cable E to the main machine 1 14 Turn on the main power switch and check the finisher operation 3 000 SHEET FINISHER INSTALLATION 26 March 1998 3 13 3 000 SHEET FINISHER INSTALLATION 3 13 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Q ty 1 Front Joint BACKER
118. Selects whether auto text photo separation is done 4 909 Laser Pulse Position Threshold Decides the threshold level for 0 255 selecting the type of laser pulse 1 step width modulation that is used 32 Do not change the value 4 28 26 March 1998 SERVICE PROGRAM MODE Mode No 65552 Function Settings 4 909 2 Line Width Decides the threshold value for a 0 15 Correction 1 pixel to be white when line width 1 step White correction type 1 is performed 3 Do not change the value 3 Line Width Decides the threshold value for a 0 15 Correction 1 pixel to be black when line width 1 step Black correction type 1 is performed 13 Do not change the value 4 Line Width Decides the threshold value for a 0 15 Correction 2 pixel to be white when line width 1 step White correction type 2 is performed 4 Do not change the value 5 Line Width Decides the threshold value for a 0 15 Correction 2 pixel to be black when line width 1 step Black correction type 2 is performed 12 Do not change the value 6 Error Diffusion Selects the gamma table for error 0 Gamma Gamma Table diffusion table 0 Do not change the value 1 Gamma table 1 7 Edge Detection 1 Decides the threshold value to 0 255 calculate the difference between the 1 step object pixel and the surrounding 24 pixels Do not change the value 8 Edge Detection 2 Decides the
119. Selects whether the 25 and 50 0 Available Reduction in Fax reduction in fax mode is available or 1 Not Mode not available Do not change the setting 11 MTF Filter Selects the MTF filter coefficient for 0 11 Coefficient Level 25 64 reduction for letter mode 1 step 25 64 using greyscale processing 7 Weak Strong 11 8 2 1 9 0 5 4 10 7 3 6 12 MTF Filter Selects the MTF filter coefficient for 0 11 Coefficient Level 65 154 magnification for letter 1 step 65 154 mode using greyscale processing 6 Weak Strong 11 8 2 1 9 0 5 4 10 7 3 6 13 MTF Filter Selects the MTF filter coefficient for 0 11 Coefficient Level 155 256 enlargement for letter 1 step 155 256 mode using greyscale processing 10 Weak Strong 11 8 2 1 9 0 5 4 10 7 3 6 4 22 26 March 1998 SERVICE PROGRAM MODE Mode No ae Class 3 Function Settings 4 903 14 MTF Filter Selects the MTF filter coefficient for 0 11 Coefficient Level 257 400 enlargement for letter 1 step 257 400 mode using greyscale processing 10 Weak Strong 11 8 2 1 9 0 5 4 10 7 3 6 15 MTF Filter Selects the MTF filter coefficient for 0 11 Coefficient Level photo mode using greyscale mode if 1 step Photo mode MTF is enabled for this mode with 4 SP 4 904 3 Weak Strong 11 8 2 1 9 0 5 4 10 7 3 6 16 Smoothing Filter Selects the smoothing filter 0 8 Coefficient Level coefficient for photo mode using 1 step
120. TALLATION PROCEDURE Installation A2301403 WMF A6881500 WMF NCAUTION Unplug the main machine power cord before starting the following procedure 1 Unpack the bridge unit Then remove the tapes 2 Remove the inner tray A 3 Remove the inner tray pin B 4 Remove three covers C If the optional external output tray A825 will be installed instead of a finisher do step 5 5 Remove the two covers D 6 Remove the cover E 7 Remove the cap F BRIDGE UNIT INSTALLATION 26 March 1998 A2301402 WMF D A2301404 WMF 7 Attach two entrance mylars A to the paper entrance area of the bridge unit as shown 8 If the optional finisher will be installed Attach two exit mylars B to the bridge unit as shown 9 Remove the cover C 10 Install the bridge unit 2 screws D 11 Connect the bridge unit I F harnesses E 12 Install the connector cover 13 Turn on the main power switch and check the bridge unit operation make sure that there are no paper jams 3 30 26 March 1998 AUTO REVERSE DOCUMENT FEEDER INSTALLATION 3 8 AUTO REVERSE DOCUMENT FEEDER INSTALLATION 3 8 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Q ty 50 2 Zs KNOW CM 2 mS Original Tray 1 5 4 Screw MAX T A ERE 2
121. TE Make sure that the development side seals A are set inside the development unit case Reassemble the machine NOTE When reinstalling the PCU make sure it is installed properly Otherwise black copies may be printed Push lever B to the side raise the toner bottle holder lever C and pull the toner bottle holder D out Shake the toner bottle well NOTE Do not remove the toner bottle cap E until after shaking Unscrew the bottle cap and insert the bottle into the holder NOTE Do not touch the inner bottle cap F Reposition the holder and press down the holder lever to secure the bottle 3 9 COPIER INSTALLATION A2311537 WMF Steps 20 to 22 are for only Europe versions when the required language is other than English French and German 19 20 21 22 23 24 25 26 Remove the IC card cover A and plug the IC card B which includes the appropriate language into the IC socket NOTE When setting the IC card the surface of the card which has B printed on it should be facing the front of the machine Plug in the machine and turn on the main power switch then press the Yes key The machine automatically downloads the software After the software has been downloaded turn off the main power switch and remove the IC card Turn on the main power switch After the fusing warm up period enter the SP mode 1 Press the Clear Mode key 2 Enter 107 using the nume
122. Timing control for peripherals e Image processing video control Operation control e Application boards fax printer hard disk 2 2 Input Output Board The IOB handles the following functions e Drive control for the sensors motors and solenoids of the printer e PWM control for high voltage supply board Serial interface with peripherals e Fusing control 3 SBU Sensor Board Unit The SBU receives the analog signals from the CCD and converts them into digital signals 4 SIB Scanner Interface Board This board controls the scanner motor and passes signals between the BICU board and the component parts of the scanner unit Also it transmits the video signals from the SBU to the BICU board 5 SIFB Scanner Interface Board This board passes signals between the SIB and BICU 6 Mother Board Option This board interfaces the BICU with the fax controller and or the printer controller The mother board is part of the expansion box option 26 March 1998 SCANNING 2 DETAILED SECTION DESCRIPTIONS 2 1 SCANNING 2 1 1 OVERVIEW a um oo an e G F D A230D101 WMF The original is illuminated by the exposure lamp a xenon lamp in this model A The image is reflected onto a CCD charge coupled device B via the 1st 2nd and 3rd mirrors and through the lens C The 1st scanner D consists of the exposure lam
123. Total Copy Jam by Location Regist Sensor 16 Total Copy Jam by Location Exit Sensor 17 Total Copy Jam by Location Bridge Exit Sensor Displays the total number of copy jams by location These are jams when the paper does not activate the sensor 4 43 SERVICE PROGRAM MODE 26 March 1998 Mode No Class 1 and 2 Class 3 Function Settings 7 504 18 Total Copy Jam by Location Bridge Relay Sensor 19 Total Copy Jam by Location Duplex Entrance Sensor 23 Total Copy Jam by Location Duplex Exit Sensor 24 Total Copy Jam by Location 1 bin Tray Entrance Sensor 25 Total Copy Jam by Location Finisher Entrance Sensor 26 Total Copy Jam by Location 3 000 sheet Finisher Upper Tray Exit Sensor 27 Total Copy Jam by Location 3 000 sheet Finisher Shift Tray Exit Sensor 1 000 sheet Finisher Exit Sensor 28 Total Copy Jam by Location 3 000 sheet Staple Tray Paper Sensor 1 000 sheet Finisher Jogger Unit Paper Sensor 29 Total Copy Jam by Location Finisher Stack Feed out Belt HP Sensor 30 Total Copy Jam by Location Mail Box Entrance Sensor 31 Total Copy Jam by Location Mail Box Proof Tray Exit Sensor Displays the total number of copy jams by location These are jams when the paper does not activate the sens
124. Ullgys s times atii 1 4 Gear 1 E BOW MONG EM Marec 1 E 6 Installation Procedure sui e P Der RED RAE 1 3 17 INTERCHANGE UNIT INSTALLATION 26 March 1998 3 5 2 INSTALLATION PROCEDURE A2301302 WMF Z CAUTION Unplug the main machine power cord before starting the following procedure 1 Remove the scanner unit NOTE If the ARDF is installed remove the ARDF before removing the scanner unit Remove the stand rear cover A 2 screws 1 2 Disconnect the scanner board and the power connector 3 Disconnect the scanner harness D 4 Remove the scanner unit E 2 knob screws NOTE 1 Hold the scanner unit as shown in the above illustration Otherwise it will be damaged 2 Make sure the harnesses are not damaged by the edges of the opening F 3 After removing the scanner keep it in a flat level place 5 Remove four plates G 1 screw each 6 Remove the scanner unit plate H 1 screw 3 18 INTERCHANGE UNIT INSTALLATION 26 March 1998 A WV KONANA V A2301453 WMF 2 Unpack the interchange unit 3 Remove the paper exit cover A 4 screws 4 Open the upper right cover 5 Remove the paper exit unit B 2 screws 1 connector 3 19 INTERCHANGE UNIT INSTALLATION 26 March 1998 2301455 Install the interchange unit A 3 s
125. age is printed There is no need to do this at installation as the hard disk firmware already contains bad sector information and damage is not likely during transportation Bad sectors detected with this SP mode will be stored in the NVRAM with the bad sector data copied across from the firmware If the machine detects over 50 bad sectors SC361 will be generated At this time use SP4 91 1 2 1 Start HDD Setting Formatting Formats the hard disk This takes 4 minutes Press 1 to start Do not turn off the main power switch during this process 1 Start 3 HDD Setting Spindle Control Decides the disk drive motor spindle motor stop timing 0 Enabled The hard disk stops in low power mode The first copy after returning to standby will take longer 1 Disabled The hard disk keeps going in low power mode HDD Setting Bad Sector Information Reset Resets the bad sector information which is stored in the NVRAM Press 1 to start This SP should be performed when the hard disk is replaced 1 Start HDD Setting Bad Sector Display Displays the number of bad sectors there are on the hard disk If the machine detects over 50 bad sectors SC361 will be generated At this time use SP4 91 1 2 Total 0 Copy 0 Printer 0 AF Archive File 0 4 30 26 March 1998 SERVICE PROGRAM MODE
126. ailed O Flash Card Utility INTERNAL ROM CARD CARD A2305XXXA ROM A2305XXXB Writing Failed COMFIRM E A321M505 WMF 4 64 26 March 1998 USER PROGRAM MODE 4 4 USER PROGRAM MODE The user program UP mode is accessed by users and operators and by sales and service staff UP mode is used to input the copier s default settings 4 4 1 HOW TO ENTER AND EXIT UP MODE Press the User Tools button then select the UP mode program After finishing the UP mode program press the User Tools button to exit UP mode 4 4 2 UP MODE TABLE NOTE The function of each UP mode is explained in the System Setting and Copy Reference section of the operating instructions System Setting Table 01 Function Priority 02 Panel Beeper 03 Ready Beeper 04 Copy Count Display 05 System Reset 06 Function Switch 07 Low Power Shift Timer 08 Low Power Timer 09 Energy Saver Mode 10 Auto Off Timer 11 Paper Size Tray 12 Paper Tray Priority 13 Auto Tray Switch 14 Special Paper Indication 15 Output Tray Copy Fax Printer 1 System 16 Print Priority 17 Contrast 18 User Code Manage 19 Management Setting Show Print Counter Print Counter List Key Operator Code Register Change Key Operator Code ADF Original Eject F F4 Size Setting 4 65 USER PROGRAM MODE 26 March 1998
127. al LD Unit Transfer Belt Paper Paper junction Junction A B Limit Guide Counter F G H Quenching Density HP J Ext IL Limit Gate Gate N Q 7 E a P Vie of E mcns interchange 1 1 1 v 1 1 1 1 L Position 2 3 4 A232 Point to Point Diagram 2 2
128. and the transfer belt The pick off pawls help separate the paper from the drum 7 ID SENSOR The laser forms a sensor pattern on the drum surface The ID sensor measures the reflectivity of the pattern The output signal is one of the factors used for toner supply control Also the ID sensor measures the reflectivity of the drum surface The output signal is used for charge roller voltage control 8 CLEANING The drum cleaning blade removes any toner remaining on the drum surface after the image is transferred to the paper 9 QUENCHING The light from the quenching lamp electrically neutralizes the charge on the drum surface o o BOARD STRUCTURE 26 March 1998 1 9 BOARD STRUCTURE 1 9 1 BLOCK DIAGRAM Scanner APS MSU Lamp Exposure Stabi le Lamp lizer LDDR LSD Polygon Motor SIB sief BICU Panel Mother Fax Controller Printer Controller ARDF PSU High D Posi 1 bin Tray Bridge Unit Voltage tioning Motor Supply c UJ m 4 Sensors Duplex Finisher Counter Sensors Clutches Controller Clutches Paper Tray Unit Standard Option A231V501 WMF 1 18 26 March 1998 BOARD STRUCTURE 1 9 2 DESCRIPTIONS 1 BICU Base Engine and Image Control Unit This is the main board It controls the following functions e Engine sequence e
129. aper tray B is placed in the machine When the machine detects that the paper tray is in the machine the tray lift motor C rotates and the coupling gear D on the tray lift motor engages the pin E the lift arm shaft F Then the tray lift arm lifts the tray bottom plate 26 March 1998 PAPER FEED oo an e A A231D526 WMF When the paper tray is placed in the machine the pick up roller A lowers When the top sheet of paper reaches the proper height for paper feed the paper pushes up the pick up roller and the actuator B on the pick up roller supporter activates the paper height sensor C to stop the tray lift motor After several paper feed cycles the paper level gradually lowers and the paper height sensor is de activated The tray lift motor turns on again until this sensor is activated again When the tray is drawn out of the machine the tray lift motor coupling gear disengages the pin on the lift arm shaft and the tray bottom plate then drops under its own weight PAPER FEED 26 March 1998 2 8 5 PAPER END DETECTION A230D706 WMF If there is some paper in the paper tray the paper end feeler A is raised by the paper stack and the paper end sensor B is deactivated When the paper tray runs out of paper the paper end feeler drops into the cutout C in the tray bottom plate and the paper end sensor is activated 2 54 26 March
130. are counters Also returns all modes and adjustments to the default settings See the Memory All Clear section for how to use this SP mode correctly Press 1 for over 3 seconds then turn the main power switch off and on Normally this SP mode should not be used It is used only after replacing the or when the copier malfunctions due to a damaged NVRAM 5 802 Free Run Performs a free run The scanner 0 Stop scans once and the printer prints for 1 Start the number of copies requested To perform the free run after selecting 1 press the key to enter copy mode then input the number of copies Then press the Start key To stop the free run press c 9 5 803 1 9 Input Check Displays the signals received from sensors and switches See the Input Check section for details 4 34 26 March 1998 SERVICE PROGRAM MODE Mode No ae Class 3 Function Settings 5 804 Output Check Turns on the electrical components individually for test purposes See the Output Check section for details 5 807 1 Option Connection Checks the connectors to the 0 Not Check ADF optional peripherals connected 2 Option Connection 1 Connected Check Paper Tray Unit 3 Option Connection Check LCT 4 Option Connection Check Finisher 5 811 Machine Serial Use to input the machine serial Number number Normally done at the factor
131. ay lift malfunction 1 Definition C The paper upper limit sensor is not activated after the tray lift motor has been on for 10 seconds Possible causes e 2nd tray upper limit sensor defective Tray lift motor defective Poor tray lift motor connection 7 11 SERVICE CALL CONDITIONS 26 March 1998 5 502 2 2nd tray lift malfunction 2 Definition C If the main power switch is turned on when the paper is already at the feed height the paper height position is detected again At this time the paper upper limit sensor should de activate within 5 seconds after the paper bottom plate starts to drop If it does not deactivate within 5 s four times consecutively this SC will be generated Possible causes e 2nd tray upper limit sensor defective Tray lift motor defective Too much paper in the tray SC503 1 3rd tray lift malfunction 1 optional paper tray unit Definition C The paper upper limit sensor is not activated after the tray lift motor has been on for 13 seconds Possible causes e 3rd tray upper limit sensor defective Tray lift motor defective Poor tray lift motor connection SC503 2 3rd tray lift malfunction 2 optional paper tray unit Definition C If the main power switch is turned on when the paper is already at the feed height the paper height position is detected again At this time the paper upper limit sensor should de activate within 5 seconds after the paper bott
132. binary processing with text photo mode Laser Pulse Positioning Selects whether or not the laser pulse positioning control is used in text and text photo modes Do not change the value 4 26 NO Ne Com ON Ole ON Ca E CON 26 March 1998 SERVICE PROGRAM MODE Mode No cd Class 3 Function Settings 4 904 2 Dither Matrix Selects the dither matrix for photo 0 4x4 Setting mode with greyscale processing 1 6x6 If 0 is selected the image will be sharper 3 Filter Type Selects the filter type for photo mode 0 MTF Selection in Photo 1 Smoothing Mode Coefficients used 0 SP4 903 15 and SP4 903 24 1 SP4 903 16 If 0 is selected the image will be sharper However dot screen areas will be faint 6 Line Width Selects the line width correction type 0 Not Correction Type in for copied original mode corrected Copied Original In copied original mode lines may 1 Thin line 1 Mode bulge in the main scan direction 2 Thin line 2 Adjust this SP mode until the result is 3 Thick line satisfactory 7 Processing Selects the process used for text areas in text photo in Text Areas mode with grayscale mode if auto text photo separation enabled with SP 4 907 0 1 dot grayscale 1 1 dot error diffusion If 1 is selected the image becomes sharper in focus However gradation will be reduced 8 Processing Type Sel
133. brates the LD unit positioning mechanism 26 March 1998 LASER EXPOSURE 2 3 6 LD SAFETY SWITCHES Front Cover BICU Safety Sw LDDR CN402 3 CN312 2 5V CN403 1 1 no oS oo an LD5V CN403 3 Upper Right Cover Sw A232D500 WMF To ensure technician and user safety and to prevent the laser beam from inadvertently switching on during servicing there are four safety switches located at the front cover and upper right cover These four switches are installed in series on the LD5 V line coming from the power supply unit PSU through the BICU board When the front cover or the upper right cover is opened the power supply to the laser diode is interrupted 2 27 PHOTOCONDUCTOR UNIT PCU 26 March 1998 2 4 PHOTOCONDUCTOR UNIT PCU 2 4 1 OVERVIEW ao ua A230D301 WMF The PCU consists of the components shown in the above illustration An organic photoconductor OPC drum diameter 60 mm is used in this machine 1 Toner Collection Coil 6 Transfer Entrance Guide 2 Toner Collection Plate 7 Charge Roller Cleaning Pad 3 Spur 8 Charge Roller 4 Pick off Pawl 9 Cleaning Blade 5 OPC Drum 2 28 26 March 1998 PHOTOCONDUCTOR UNIT PCU 2 4 2 DRIVE MECHANISM a os oo an e A230D302 WMF The drive from the main motor A is transmitted to the drum B through a series of g
134. canner gamma correction corrects the data output to the IPU to account for the characteristics of the scanner e g CCD response scanner optics Printer gamma correction corrects the data output from the IPU to the laser diode to account for the characteristics of the printer e g the characteristics of the drum laser diode and lenses ao 2 um oo an e The data for the scanner and printer gamma correction are fixed and stored in the memory There are no SP adjustments in this machine Gradation processing These are four types of gradation processing 1 Grayscale processing This has 256 output levels for each pixel When the optional image enhancement kit HDD is installed the binary picture processing mode cannot be selected 2 Binary picture processing This has only two output levels black and white and is used only in memory copying only without HDD and fax transmission 3 Error diffusion In text photo mode this is used with either grayscale processing or binary processing 4 Dithering In photo mode this is used with either grayscale processing or binary processing These four processes are used as follows 1 Grayscale processing mode Text mode Grayscale processing Text photo mode Error diffusion 256 levels Photo mode Dithering 256 levels Copied original mode Grayscale processing line width correction Low density original mode Grayscale processing 2 Bi
135. cation Filtering Test mode 1 Test mode 2 Filtering only Magnification only 6 No processing 7 Normal operation akwonh Do not change the value Image Data Path Gradation Processing Selects one of the following video data outputs which will be used for gradation processing 0 After image scanning 1 After MSU 2 After image overlay 3 Normal operation Do not change the value Image Data Path Image Overlay Selects one of the following video data outputs which will be used for the image overlay function 0 Grayscale processing data 1 Binary processing data 2 Normal operation Do not change the value Printout Type Selection Selects one of the following video data outputs which will be used for the printer controller 0 Normal operation 1 Black white conversion 2 Not printout 3 Application through Do not change the value 4 906 Image Processing Priority in Text Photo Separation 0 Photo priority 1 Text priority Selects either text priority or photo priority for text photo mode if auto text photo separation enabled with SP 4 907 With Photo priority all of the image is processed with the image processing for photo mode With Text priority the machine performs the auto text photo separation and does the appropriate image processing for each area 4 907 Text Photo Auto Separation 0 No 1 Yes
136. coming message and prints it 26 March 1998 ENERGY SAVER MODES Returning to stand by mode The machine returns to stand by mode when the operation switch is pressed The recovery time is about 45 s Operation Mode Switch Fusing Temp i 8 Night stand Room Temp T Off mo by mode Fusing lamp off Only 5VE is Night mode Off supplied to the fax Fusing lamp off controller 2 75 26 March 1998 INSTALLATION REQUIREMENTS 3 INSTALLATION PROCEDURE 3 1 INSTALLATION REQUIREMENTS 3 1 1 ENVIRONMENT 1 Temperature Range 10 C to 30 C 50 F to 86 F Humidity Range 15 96 to 90 RH 3 Ambient Illumination Less than 1 500 lux do not expose to direct sunlight 4 Ventilation Room air should turn over at least 30 m3 hr person 5 gt Ambient Dust Less than 0 10 mg m 2 7 x 10 6 oz yd E 6 Avoid an area which is exposed to sudden temperature changes This includes 1 Areas directly exposed to cool air from an air conditioner 2 Areas directly exposed to heat from a heater 7 Do not place the machine in an area where it will be exposed to corrosive gases 8 Do not install the machine at any location over 2 000 m 6 500 ft above sea level 9 Place the copier on a strong and level base Inclination on any side should be no more than 5 mm 10 Do not place the machine where it may be subjected to strong vibrations 3 1 2 MACHINE
137. counter holder C Secure the key counter holder to the bracket 2 screws Attach the key counter cover D 2 screws Remove the connector cover E Cut off the part F of the connector cover D n meo 79 Remove the rear cover G 4 screws KEY COUNTER INSTALLATION 26 March 1998 A2301965 WMF 7 Connect the key counter connector A to CN211 on the I O board 8 Reinstall the covers 9 Attach the double sided tape to the key counter bracket 10 Peel off the backing of the double sided tape and attach the key counter assembly B to the left side of the scanner unit as shown NOTE When attaching the key counter assembly press the assembly against the scanner cover strongly Otherwise the key counter assembly may come off easily i 3 62 26 March 1998 ANTI CONDENSATION HEATER 3 19 ANTI CONDENSATION HEATER e S 5 S A2311520 WMF NCAUTION Unplug the machine power cord before starting the following procedure 1 Remove the exposure glass scanner rear cover and stand rear cover see Interchange Unit Installation for the stand rear cover 2 Remove the rear cover and upper left cover 3 Move the 1st and 2nd scanners to the right 4 Install the harness clamp A 5 Install the anti condensation heater B 2 screws NOTE The heater harness should be routed under the harness guard C 6 Install the harness clamp D 7 Connect the connector E to the hea
138. crews Remove the spring B Install the gear bracket C 2 screws Loop the timing belt around the gear D c Rom D O 0 Install the pulley E on the gear bracket while looping the timing belt around the pulley NOTE The junction gate lever F should go through the timing belt 11 Reinstall the spring which was removed in step 7 12 Install the small spring G from the accessories box as shown 3 20 26 March 1998 INTERCHANGE UNIT INSTALLATION Installation A2301456 WMF B A2301457 WMF 13 Install the paper exit interchange unit A as shown 2 screws 2 connectors When the 1 bin tray A684 is going to be installed 14 Do not reinstall the paper exit cover Install the 1 bin tray This installation procedure is now finished When the 1 bin tray A684 is not going to be installed do steps 15 to 18 15 Cut away the covers B and reinstall the paper exit cover 4 screws NOTE Trim off any remaining unevenness from the edges 16 Reinstall the scanner unit plate 17 Reinstall the scanner unit 18 Turn on the main power switch and check that each paper path through the interchange unit operates properly without any paper jams 3 21 1 BIN TRAY UNIT INSTALLATION 26 March 1998 3 6 1 BIN TRAY UNIT INSTALLATION 3 6 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Q ty 1 Grounding Bracket ia
139. ction Paper width upper Adjusts the upper paper width threshold for the transfer current correction As for SP2 309 1 but the factors are in SP2 309 4 paper tray and SP2 309 6 bypass 4 14 0 297 1 mm step 216 26 March 1998 Mode No Class 3 SERVICE PROGRAM MODE Function Settings 3 Transfer Current Correction o Paper tray Adjusts the transfer current correction coefficient which is used if the paper width is less than the setting of SP2 309 1 1 0 3 0 0 1 step 1 2 Transfer Current Correction Paper tray Adjusts the transfer current correction coefficient which is used if the paper width is less than the setting of SP2 309 2 1 0 3 0 Transfer Current Correction y By pass feed Adjusts the transfer current correction coefficient which is used if the paper width is less than the setting of SP2 309 1 Transfer Current Correction 6 By pass feed Adjusts the transfer current correction coefficient which is used if the paper width is less than the setting of SP2 309 2 TD Sensor Initial Setting Performs the TD sensor initial setting This SP mode controls the voltage applied to the TD sensor to make the TD sensor output about 4 0 V Press 1 to start After finishing this the TD sensor output voltage is displayed Use this mode only after installing the machine changing the TD sensor or adding new deve
140. ctor cover A and rear cover B 4 screws Remove the left cover C 4 screws Remove the NCU bracket 2 screws if the optional fax unit has been installed For 230V machines Remove the circuit breaker D 1 screw 1 connector Remove the PSU E 4 screws all connectors ee p ze 6 49 HARD DISK 26 March 1998 6 10 HARD DISK So C A231R523 WMF A231R522 WMF Remove the connector cover A and rear cover B 4 screws Remove the modular connectors if they have been installed Remove the shield plate C 2 screws Disconnect the power cable D and harness E Remove the HDD assembly F 3 screws E EE LONE De Replace the HDD G 3 screws 4 stepped screws NOTE Do not drop the HDD or shock it violently 7 After replacing the HDD perform SP4 911 6 Bad Sector Information Reset 26 March 1998 COPY ADJUSTMENTS PRINTING SCANNING 6 11 COPY ADJUSTMENTS PRINTING SCANNING NOTE 1 You need to perform these adjustment s after replacing any of the following parts e Scanner Wire e Lens Block SBU Assembly Scanner Drive Motor Polygon Mirror Motor e Paper Side Fence e Memory All Clear 2 For more details about accessing SP modes refer to section 4 6 11 1 PRINTING NOTE 1 Make sure the paper is installed correctly in each paper tray before you start these adjustments 2 Use the Trimming Area Pattern SP2 902 3 No 10 to print the test pattern for the f
141. d 5 Laser Unit Auto Input the interval value of the laser 0 65535 Adjustment beam pitch automatic adjustment 1 step Interval 1000 times When the number of times that the resolution been changed reaches this value the laser unit position is automatically corrected 6 Current LD Unit Displays the current LD unit position Position number of pulses from home position If this is different from the value of 2 109 1 or 2 109 2 LD unit positioning has failed 7 Laser Beam Pitch Displays how many times the LD unit Change Counter position has been changed how many times the resolution has changed When the laser beam pitch adjustment is done this counter is reset to 0 4 11 SERVICE PROGRAM MODE 26 March 1998 Mode No cies Class 3 Function Settings 2 109 8 Beam Pitch Data Resets the values of SP2 109 6 and 1 Start Reset SP2 109 7 Press 1 to reset After replacing the LD unit this SP mode must be done 2 110 Image Resolution Designer use only Do not change 0 400 dpi Change this value 1 600 dpi 2 15 4 x 16 3 16x 15 4 2 111 FCI Setting Select the FCI setting 0 Through This SP affects copier mode only 1 Edge Designer use only Do not change Smoothing this value 2 FCI On parameter 2 3 FCI On parameter 1 2 112 Polygon Motor Off Input the time that the polygon motor 0 60 Timer turns off after ente
142. d and an SC code is generated VSP V VSG V 3 903 Initialization at Power up Decides whether or not the machine is initialized drum cleaning charge roller H P check charge roller voltage correction etc at power up If set to 1 the fusing idling mode is disabled regardless of the setting of SP1 103 0 Yes 1 No 4 008 Sub Scan Magnification Scanning Adjusts the magnification in the sub scan direction for scanning If this value is changed the scanner motor speed is changed Use the key to toggle between and See Replacement and Adjustment Copy Adjustments for details 9 0 9 0 0 1 step 0 0 4 010 Leading Edge Registration Scanning Adjusts the leading edge registration for scanning The image moves in the direction of the leading edge Use the key to toggle between and See Replacement and Adjustment Copy Adjustments for details 9 0 9 0 0 1 mm step 0 0 mm 4 18 26 March 1998 SERVICE PROGRAM MODE Mode No Cisse Class 3 Function Settings 4 011 Side to Side Adjusts the side to side registration 6 0 6 0 Registration for scanning 0 1 mm step Scanning 0 0 mm The image disappears at the left side The image appears at the left side Use the key to toggle between and See Replacement and Adju
143. d by the APS sensors are regarded as A5 lengthwise or 51 2 x 81 2 If Not detected is selected Cannot detect original size will be displayed 4 428 1 Standard White Displays whether or not the standard 0 Performed Level Adjustment Flag white level adjustment has been done 1 Not performed 4 19 SERVICE PROGRAM MODE 26 March 1998 Mode No Giles d Function Settings 4 428 2 Standard White Corrects the standard white level of 1 Start Level Adjustment the white plate This SP mode is for factory use only Do not use this SP mode 4 901 1 SBU E O Checks the difference value of the 0 255 Adjustment E ch black level for the EVEN channel 1 step after adjusting the black level at 147 power up This SP mode is for designer use only Do not use this SP mode 2 SBU E O Checks the difference value of the 0 255 Adjustment ch black level for the ODD channel after 1 step NAD40 only adjusting the black level at power up 147 This SP mode is for designer use only Do not use this SP mode 3 Black Level Checks the value of the black level 0 255 Adjustment Ech for the EVEN channel after adjusting 1 step the black level at power up 116 This SP mode is for designer use only Do not use this SP mode 4 Black Level Checks the value of the black level 0 255 Adjustment O ch for the ODD channel after
144. e if the pattern made with the value 192 has less obvious strips than the other print outs the correct value is near 192 pe De Adjust the laser beam pitch position until the thin lines are of uniform thickness no striping effect should appear on the printout doing steps 1 2 and 3 in step 1 input a value which is estimated to be correct then do steps 2 and 3 then if necessary go back to step 1 and try another value 9 After adjusting the laser beam pitch for 400 dpi adjust the laser beam pitch for 600 dpi using the same procedure as for 400 dpi use the SP modes for 600 dpi The laser beam pitch for 600 dpi should be 24 48 more than for 400 dpi t Feed Direction T Feed Direction A231R513 WMF A231R512 WMF Adjustment not complete Adjustment complete 6 18 26 March 1998 PHOTOCONDUCTOR UNIT PCU 6 3 PHOTOCONDUCTOR UNIT PCU 6 3 1 PCU B A230R301 WMF Replacement Adjustment A230R308 WMF D E 1 Open the right cover and front cover Pull the PCU A out slightly while pushing the release lever B P
145. e laser section as shown below A232R500 CDR N INVISIBLE LASER RADIATION WHEN OPEN AVOID DIRECT EXPOSURE TO DANGER BEAM gt PS lt 6 14 26 March 1998 LASER UNIT 6 2 2 LASER UNIT A A230R201 WMF NWARNING Turn off the main power switch and unplug the machine before attempting this procedure Laser beams can seriously damage your eyes Remove the front cover A 2 pins Remove the shield glass B 5 D on Cs lt gt og Remove the inner cover C 2 screws 1 connector mechanical counter Remove the shield plate D and grounding wire E 1 screw each Remove the laser unit F 2 screws 5 connectors 1 flexible harness NOTE 1 When disconnecting the harnesses from the LD unit hold on to the LD unit 2 When sliding out the laser unit do not hold the LD unit 6 15 LASER UNIT 26 March 1998 6 2 3 POLYGON MIRROR MOTOR A230R203 WMF A230R204 WMF Remove the laser unit See Laser Unit NAD40 only Remove the heat sink A 1 screw Remove the laser unit cover B 4 screw 2 pawls Remove the polygon mirror motor C 4 screws 1 connector 6 16 26 March 1998 LASER UNIT 6 2 4 LASER SYNCHRONIZATION DETECTOR A230R206 WMF 1 Remove the laser unit See Laser Unit 2 Remove the laser synchronization detector A 1 screw 1 connector 6 2 5 LD UNIT Sanaa 5 4 on
146. e paper moves to the end of the transfer belt unit where it separates from the belt as the belt curves away Then the paper goes to the fusing unit 2 59 IMAGE TRANSFER AND PAPER SEPARATION 26 March 1998 2 9 4 TRANSFER BELT UNIT CONTACT MECHANISM A230D503 WMF The belt contact and release mechanism consists of the belt contact clutch A cam B and contact lever C The belt contact clutch turns on and the cam with the clutch rotates half of a complete rotation The contact lever riding on the cam is lifted up and the spring D pushes the belt into contact with the drum The transfer belt contact home position sensor E is used to detect the home position of the cam this is when the belt is away from the drum The belt must be released from the drum between copy jobs The reasons are as follows e To prevent the ID sensor pattern on the drum from being rubbed off by the transfer belt To prevent a change in the drum s characteristics because of the influence of additives inside the rubber belt 26 March 1998 IMAGE TRANSFER AND PAPER SEPARATION 2 9 5 TRANSFER BELT CHARGE Overview B a os oo an e A230D504 WMF The high voltage supply board A applies the positive transfer belt current to the transfer belt B through the terminal block C terminal plate D and the roller E The terminal block and the terminal plate contact each other when the right cove
147. e pressure springs A constantly apply pressure between the hot roller B and the pressure roller C The pressure can be changed by adjusting the position of the pressure springs The left position D is the normal setting The right position E increases the pressure and this prevents insufficient fusing by the fusing unit 2 10 5 CLEANING MECHANISM A A231D515 WMF The cleaning roller A is always in contact with the pressure roller B It collects toner and paper dust adhering to the surface of the pressure roller This is because the cleaning roller is made of metal and collects adhering matter more easily than the pressure roller which has a teflon coating IMAGE FUSING AND PAPER EXIT 26 March 1998 2 10 6 FUSING TEMPERATURE CONTROL aga simia 35 cpm NAD30S NAD30 45 cpm NAD40 200 185 C O n dbbi ruo t oi act ad o ws 165 150 100 50r a ae on Main SW ON Stand by A231D518 WMF Temperature Control There are two types of control on off control and phase control The mode can be selected with SP1 104 When the main power switch turns on the CPU checks the ac frequency for 500 ms this is done in case phase control mode is selected later Then the CPU turns on the fusing lamp When the thermistor detects the stand by temperature 155 C for NAD30 NAD3O0S 175 C for NAD40 the machine can start to print When the thermistor detects the operating temp
148. e shading data 1 Minimum This SP mode is for designer use only 19 Digital Gain These SP modes are used only for 0 Adjustment E ch the Japanese version Scanner App Do not change the values 20 Digital Gain 0 Adjustment ch Scanner App 21 Analog Gain 40 40 Adjustment E ch 51 30 Scanner App 22 Digital Gain 40 Adjustment ch Scanner App 4 21 SERVICE PROGRAM MODE 26 March 1998 Mode No pev Class 3 Function Settings 4 902 9 Gate Signal This SP mode is for designers 1 Masking only Do not change the value 13 Intermittent This SP mode is for designers 0 Control Mode only Do not change the value 4 903 2 Filter Mode Selects the filter combination of the 0 3 Setting flare filter and edge filter 0 0 Flare off edge off 1 Flare on edge off 2 Flare off edge on 3 Flare on edge on Do not change the value 5 Full Size Mode Selects whether the copy is always in 0 Normal full size mode even if the operation magnification ratio has been 1 Always full changed size mode Set to 1 when checking the magnification in the main scan direction If the magnification is not 100 something is wrong with the image processing circuits 7 Image Shift in Adjusts the pixel shift amount in the 0 5120 Magnification main scan direction in magnification 1 step Mode mode 0 This SP mode is for designer use only 10 25 50
149. e the drum charge roller voltage the machine compares Vsdp with Vsg e Vsdp Vsg gt 0 90 Reduce the drum charge voltage by 30 V e Vsdp Vsg lt 0 85 Increase the drum charge voltage by 30 V NOTE The minimum drum charge roller voltage is 2 kV Correction for paper width and thickness bypass tray only The bypass tray can be used for narrower paper than the paper trays Also thicker paper can be used as well as OHP sheets In these cases some copy quality problems may occur To deal with this the charge roller voltage can be increased for paper fed from the bypass tray The voltage corrections are adjusted with SP 2 914 1 and 2 The width thresholds for these adjustments can be adjusted with 2 309 1 and 2 309 2 Charge roller input voltages Paper width from 216 mm to 297 mm SP2 001 1 Paper width from 150 mm to 216 mm SP2 001 1 50 V adj with SP2 914 2 Paper width below 150 mm SP2 001 1 250 V adj with SP2 914 1 Paper width limits 150 mm limit SP2 309 1 216 mm limit SP2 309 2 Similar voltage adjustments are available for development bias and transfer current 26 March 1998 DRUM CHARGE 2 5 3 ID SENSOR PATTERN PRODUCTION TIMING ID sensor pattern ID sensor pattern Vsp Vsg Vsp Vsg 1 2 3 TORRE oa pa ee o 4 gt Series of copies So ao Vref Decision
150. e this SP when an image problem see 2 914 1 occurs when paper with a small width is fed from the by pass feed tray 0 400 10 V step 50 V LD Off Check Factory use only Shading Correction Printer Selects whether shading correction for printing is done or not Do not change the setting Toner Overflow Sensor Select whether the toner overflow sensor is activated or not Do not change the setting ID Sensor PWM Setting This SP mode is added to solve the following problem In the ADS an SC condition occurs when ID Sensor Initial Setting is not done after doing an NVRAM Clear or replacing the NVRAM The PWM data is stored at doing the ID Sensor Initial Setting 4 17 SERVICE PROGRAM MODE 26 March 1998 Mode No Class 1 and 2 Class 3 Function Settings 3 001 2 ID Sensor Initial Setting Performs the ID sensor initial setting The ID sensor output for the bare drum VSG is adjusted to 4 0 0 2V This SP mode should be performed after replacing or cleaning the ID sensor or replacing the drum or doing an NVRAM clear 1 Start 3 103 ID Sensor Output Display Displays the current VSG and VsP output If the ID sensor does not detect the ID pattern VSP 5 0V VSG 5 0V is displayed and an SC code is generated If the ID sensor does not detect the bare area of the drum VSP 0 0V VSG 0 0V is displaye
151. e toner bottle has a spiral groove H that helps move toner to the development unit When the bottle holder unit is pulled out to add a new toner bottle the following happens automatically to prevent toner from scattering e The chuck releases the toner bottle cap into its proper position e The toner shutter shuts to block the opening as a result of pressure from a spring 26 March 1998 DEVELOPMENT Toner supply mechanism a 2 oo an e A231D505 WMF A230D452 WMF D The toner supply motor A drives the toner bottle B and the mylar blades C First the toner falls down into the toner bottle holder The toner supply mylar blades transfer the toner to the slit D When the PCU is installed into the machine the shutter E under the PCU is opened by the development unit Then the toner falls down into the development unit through the slit and the shutter 2 39 DEVELOPMENT 2 6 6 TONER DENSITY CONTROL Overview 26 March 1998 There are two modes for controlling toner supply sensor control mode and image pixel count control mode The mode can be changed with SP2 208 1 The factory setting is sensor control mode Image pixel count mode should only be used if the TD or ID sensor is defective Toner Density Control Flow Chart Copying Image pixel count 10 detection gt Has the following condition been detected 20 times Vtref lt Vt 10 tref 0 1
152. ears a timing belt C and the drum drive shaft D The main motor has a drive controller which outputs a motor lock signal when the rotation speed is out of the specified range The fly wheel E on the end of the drum drive shaft stabilizes the rotation speed this prevents banding and jitter from appearing on copies The 40 has two flywheels because of the higher speed DRUM CHARGE 26 March 1998 2 5 DRUM CHARGE 2 5 1 OVERVIEW C B A231D525 WMF This copier uses a drum charge roller instead of a scorotron corona wire to charge the drum The drum charge roller A always contacts the surface of the drum B to give it a negative charge The high voltage supply board C gives a negative dc voltage to the drum charge roller through the charge roller terminal D bias plate E and the rear roller bushing This gives the drum surface a negative charge of 950V 26 March 1998 DRUM CHARGE 2 5 2 CHARGE ROLLER VOLTAGE CORRECTION Correction for Environmental Conditions ID Sensor Pattern Sub Scan Direction 1650 V NAD40 1630 V NAD30 a 2 oo an e Charge Voltage On Laser Diode Off Drum Potential 950 V 600 V 550 V 380 V 150V V sg 4 00 V y EN 8 50 V Development Bias ID Sensor Output _ _ _ mind lL V sp 0 31 V gt A231D506 WMF In the drum charge roller system the voltage
153. ects the process used for photo areas in text photo in Photo Area mode with grayscale mode if auto text photo separation enabled with SP 4 907 0 2 dot grayscale 1 2 dot error diffusion If 1 is selected the image becomes sharper in focus However gradation will be reduced 9 Image Data Path Selects one of the following video data outputs which MSU will be used for printing 0 After image scanning 1 After gradation processing 2 After image data form application 3 After MSU 4 Not output 5 Normal video processing Do not change the value 12 Threshold Level in Adjusts the threshold level for binary 0 255 Binary Picture picture processing 1 step Processing Mode 128 18 Binary Dither Selects the dither pattern for photo 0 70 lines Pattern mode in binary picture processing 8x8 mode 1 95 lines A greater number of lines gives a 6 6 more detailed copy 2 140 lines 8x8 3 180 lines 8x8 4 27 SERVICE PROGRAM MODE 26 March 1998 Mode No Class 1 and 2 Class 3 Function Settings 4 904 23 Binary Error Diffusion Pattern 0 Matrix 1 1 Matrix 2 Selects the error diffusion pattern for text photo mode in binary processing mode Do not change the value 4 905 Image Data Path Filtering Magnifica tion Selects one of the following video data outputs which will be used for printing Filtering Magnification Magnifi
154. ed 1 Key Counter Detected Not detected 0 Not used 4 53 SERVICE PROGRAM MODE 26 March 1998 Class 3 no no Description 0 Reading 1 7 7 Not used Paper End 6 Right Lower Cover Switch Switch not Switch pressed pressed 5 2nd Tray Height Sensor Paper not at Paper at upper limit upper limit 4 1st Tray Height Sensor Paper not at Paper at upper limit upper limit 3 Lower Relay Sensor Paper detected Paper not detected 2 Upper Relay Sensor Paper detected Paper not detected 1 Lower Paper End Sensor Paper not Paper detected detected 0 Upper Paper End Sensor Paper not Paper detected detected 8 7 Dip Switch 8 On Off VO Board 6 Dip Switch 7 On Off Dip Switch 5 Dip Switch 6 On Off 101 4 Dip Switch 5 On Off 3 Dip Switch 4 On Off 2 Dip Switch 3 On Off 1 Dip Switch 2 On Off 0 Dip Switch 1 On Off 9 7 Not used Duplex 6 5 4 3 Exit Sensor Paper detected Paper not detected 2 Entrance Sensor Paper detected Paper not detected 1 Cover Guide Sensor Cover guide Cover guide opened closed 0 Duplex Unit Switch Switch pressed Switch not cover closed pressed Table 1 By pass Feed Table Paper Size Data Class 3 no Paper Width 4 Post Card B6 lengthwise B5 lengthwise A5 lengthwise 5 5 B4 lengthwise A4 lengthwise 8 5 8 lengthwise 11 x 17 4 54
155. ed to the memory 26 March 1998 COPY PROCESS 2 DRUM CHARGE In the dark the charge roller gives a negative charge to the organic photo conductive OPC drum The charge remains on the surface of the drum because the OPC layer has a high electrical resistance in the dark 3 LASER EXPOSURE The processed data from the scanned original is retrieved from the memory and transferred to the drum by two laser beams which form an electrostatic latent image on the drum surface The amount of charge remaining as a latent image on the drum depends on the laser beam intensity which is controlled by the BICU board 4 DEVELOPMENT The magnetic developer brush on the development roller comes in contact with the latent image on the drum surface Toner particles are electrostatically attracted to the areas of the drum surface where the laser reduced the negative charge on the drum 5 IMAGE TRANSFER Paper is fed to the area between the drum surface and the transfer belt at the proper time to align the copy paper and the developed image on the drum surface Then the transfer bias roller applies a high positive charge to the reverse side of the paper through the transfer belt This positive charge pulls the toner particles from the drum surface on to the paper At the same time the paper is electrically attracted to the transfer belt 6 PAPER SEPARATION Paper separates from the drum as a result of the electrical attraction between the paper
156. eleted 10 lt 32 density is reduced If A lt 48 the pixel is deleted 11 lt 48 density is reduced If A lt 64 the pixel is deleted 12 lt 64 density is reduced If A lt 80 the pixel is deleted 13 lt 80 density is reduced If A lt 96 the pixel is deleted 14 lt 96 density is reduced If A lt 128 the pixel is deleted 15 lt 128 density is reduced Function Pixel density reduction works as follows For the example in the above drawing when the SP mode value is 11 the sum of the pixels around the edge is less than 48 the object pixel value is reduced from 90 to 3 as shown below 0 0 30 7 0 0 0 0 0 0 0 0 12 3 2 13 IMAGE PROCESSING 26 March 1998 Filtering main scan magnification reduction Overview After auto shading the image data is processed by both filtering and main scan magnification However to reduce the occurrence of moire in the image the processing order depends on the reproduction ratio as follows 1 64 reduction or less Main Scan Reduction Filtering 2 6596 reduction or higher Filtering Main Scan Magnification Filtering There are two software filters for enhancing the desired image qualities of the selected original mode the MTF filter and the smoothing filter The MTF filter emphasizes sharpness and is used in text and text photo modes The smoothing filter is used in photo mode T
157. ent MTF filter SP4904 7 dot erase strength Gradation level type in text areas SP4904 8 Gradation type in photo areas Photo SP4903 36 SP4904 3 SP2909 1 SP4904 2 Background Filter type Main scan Dither erase level smoothing mag matrix type or MTF SP4903 16 Smoothing filter coefficient SP4903 15 MTF filter coefficient SP4903 24 MTF filter strength Copied SP4903 37 SP4903 19 SP2909 1 SP4904 6 Original Background MTF filter Main scan Line width erase level coefficient mag correction SP4903 32 SP4903 27 type Independent MTF filter SP4903 38 dot erase strength Error level diffusion on off Low SP4903 31 SP4903 18 SP2909 1 SP4903 38 Density Independent MTF filter Main scan Error Original dot erase coefficient mag diffusion level SP4903 26 on off MTF filter strength 2 11 D oo an IMAGE PROCESSING 26 March 1998 Auto shading Auto shading does two things e Zeroes the black level for each scan line of data Corrects for variations in white level across the main scan Background erase Output Input 0 20 255 A231D527 WMF By default this process is used only in letter mode and copied original mode However it can be enabled for other modes by SP mode Usually dirty background is erased using the Auto Image Density ADS function However sometimes dirty background areas will still appear These can be erased by this fu
158. er Supply Rate x K Toner Supply Rate x K ges Image Pixel Count 2 255 6 NOTE 1 The toner supply rate can be changed using SP2 209 1 2 K Toner supply rate coefficient 0 25 3 0 default 3 0 3 The bracket 2 in the above formula is only used if Vtref Vt 4 The maximum toner supply motor on time is 1 2 s Vsp and Vsg detection The ID sensor at the lower right area of the drum detects the following voltages e Vsg The ID sensor output when checking the drum surface Vsp The ID sensor output when checking the ID sensor pattern In this way the reflectivity of both the drum surface and the pattern on the drum are checked This compensates for any variations in the reflectivity of the pattern on the drum or the reflectivity of the drum surface The ID sensor pattern is made on the drum by the charge roller and laser diodes Vsg Vsp is detected every 10 copies to decide the new Vtref The Vsg Vsp detection period can be changed using SP2 210 the default is 10 New Vtref determination Even if the toner concentration in the developer is kept constant by checking the TD sensor the toner potential chargeability and the image density both change with humidity and the amount of toner on the carrier Therefore the actual image density using the ID sensor output is also used as one of the factors for deciding the new Vtref which is used for toner density control The new Vtref is determined using t
159. er as first aid unsuccessful get medical attention OBSERVANCE OF ELECTRICAL SAFETY STANDARDS 1 The copier and its peripherals must be installed and maintained by a customer service representative who has completed the training course on those models The NVRAM on the system control board has a lithium battery which can explode if replaced incorrectly Replace the NVRAM only with an identical one The manufacturer recommends replacing the entire NVRAM Do not recharge or burn this battery Used NVRAM must be handled in accordance with local regulations SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL Do not incinerate toner bottles or used toner Toner dust may ignite suddenly when exposed to an open flame Dispose of used toner developer and organic photoconductors in accordance with local regulations These are non toxic supplies Dispose of replaced parts in accordance with local regulations When keeping used lithium batteries in order to dispose of them later do not put more than 100 batteries per sealed box Storing larger numbers or not sealing them apart may lead to chemical reactions and heat build up LASER SAFETY The Center for Devices and Radiological Health CDRH prohibits the repair of laser based optical units in the field The optical housing unit can only be repaired in a factory or at a location with the requisite equipment The laser subsystem is replaceable in the field by a qualified Customer Engineer
160. erature 165 C for NAD30 NAD308S 185 C for NAD40 the CPU turns the fusing lamp off on to maintain this temperature Fusing Idling If copies are not sufficiently fused soon after the main power switch is turned on fusing idling should be enabled with SP1 103 When fusing idling is enabled it is done when the temperature reaches the value of SP1 105 1 Fusing temperature adjustment 20 C However even if fusing idling is enabled it is not done when the temperature at power up gt the value of SP1 105 1 20 C In the opposite case even if fusing idling is disabled it is done when the temperature at power up lt 15 C The fusing idling time is as follows The temperature at Fusing idling mode power up Disabled Enabled 15 C or less 30 2 min Higher than 15 C Not performed 30s In this case fusing idling also prevents dirty background 26 March 1998 IMAGE FUSING AND PAPER EXIT 2 10 7 OVERHEAT PROTECTION If the hot roller temperature becomes greater than 230 C the CPU cuts off the power to the fusing lamp At the same time SC543 will be generated Even if the thermistor overheat protection fails there is a thermofuse in series with the common ground line of the fusing lamp If the temperature of the thermofuse reaches 169 C the thermofuse opens removing power from the fusing lamp At the same time the copier stops operating At this time SC542 will be generated a 2
161. escription Independent Dot binary picture Erase for details modes 31 Independent Dot Selects the independent dot erase 0 15 Erase Level level for low density original mode 1 step Low Density Refer to Detailed Section 0 Disabled Original mode Description Independent Dot Erase for details 32 Independent Dot Selects the independent dot erase 0 15 Erase Level level for copied original mode 1 step Copied Original Refer to Detailed Sectional 11 mode Description Independent Dot Erase for details 33 Edge Filter Adjusts the threshold level for the 0 255 Threshold Level edge filter 1 step This value is only effective when the 200 setting of SPA 903 2 is 2 or 3 Normally not used 4 24 26 March 1998 SERVICE PROGRAM MODE Mode No Class 1 and 2 Class 3 Function Settings 4 903 34 Background Erase Level Text mode Adjust the threshold level for the background erase function in the text mode A larger value reduces dirty background 0 255 1 step 20 35 Background Erase Level Text Photo mode Adjust the threshold level for background erase in text photo mode A larger value reduces dirty background 0 255 1 step 0 Disabled 36 Background Erase Level Photo mode Adjust the threshold level for background erase in photo mode A larger value reduces dirty background 0 255 1 step
162. etting Ca used when paper with a small width 10 V step is fed from the by pass tray The 250 V paper width below which the correction starts depends on the value of SP2 309 1 Use this SP when an image problem such as white spots at the centre of black dots or breaks in thin black lines occurs when paper with a small width is fed from the by pass feed tray 4 16 26 March 1998 Mode No Class 3 SERVICE PROGRAM MODE Function Settings 2 Process Control Setting CB Adjusts the charge roller voltage used when paper with a small width is fed from the by pass tray The paper width below which the correction starts depends on the value of SP2 309 2 Use this SP when an image problem see 2 914 1 occurs when paper with a small width is fed from the by pass feed tray 0 400 10 V step 50 V Process Control Setting By Adjusts the development bias used when paper with a small width is fed from the by pass tray The paper width below which the correction starts depends on the value of SP2 309 1 Use this SP when an image problem see 2 914 1 occurs when paper with a small width is fed from the by pass feed tray 0 400 10 V step 200 V Process Control Setting B Adjusts the development bias used when paper with a small width is fed from the by pass tray The paper width below which the correction starts depends on the value of SP2 309 2 Us
163. eturn to stand by mode The machine returns to standby mode in exactly the same way as from energy saver mode The recovery time from low power mode is either 20s or 30s depending on the setting of SP5 920 the default is 30s Energy Saver Fusing Temp LED Recovery Operation Time Switch 35 cpm 137 C 45 cpm 157 C 35 cpm 125 C 45 cpm 145 C 20 seconds On On 30 seconds On On 2 72 26 March 1998 ENERGY SAVER MODES 2 11 4 AUTO OFF MODE The auto off mode is for the copier only configuration Entering auto off mode The machine enters auto off mode when one of the following is done e The auto off timer runs out after the end of a job e The operation switch is pressed to turn the power off a 2 oo an What happens auto off mode When the machine enters auto off mode the operation switch turns off automatically The fusing lamp and all dc supplies except 5VE 5V for energy saver mode turns off At this time only the main power LED is lit Returning to stand by mode The machine returns to stand by mode when the operation switch is pressed Operation Energy Saver Switch LED Fusing Temp System 5V Note Room Temp Only 5VE is Off Off Fusing lamp off Off supplied to the BICU 2 73 ENERGY SAVER MODES 26 March 1998 2 11 5 NIGHT MODE This function is for the copier fax configuration There are two types of night mode Ni
164. f turn Sensor 5 5 O O Sensor O l 10 O 5 5V E CN300 3 _CN400 3 125 1 CN140 1 CN220 7 Ex xd 2 2 6 mt 90 305 2 2 Exit Sensor 24V 24 O 2 O 0 GND2 MotorA W240 241 p P Transport F 5 3 Motor W24 0 24 O gt Motor CN305 3 CN405 3 125 4 6 E 2 Stack O 5 5V Motor W24 0 24 O 2 E z A Height 5100 2 O 2 5 Stack Height Sensor Motor B W24 0 24 O Sins E 4 Sensor g CN150 1 CN225 7 24V 2410 CN310 1 CN125 8 2 6 eee 2221 E 9 4 4 Plate Open 58 5 Exit Guide Plate Open Sensor Motor A W24 0 24 JO MSN 297 Exit Sensor OlB5 5V Motor A W240 241 p Motor H 6 2 24 gt 0240 CS CN315 3 7 1 Exit Guide O 0 GND2 Motor B 24 gt 0 24 d 2 E Plate HP S70 O A5 Exit Guide Plate HP Sensor 1 13 CN190 1 CN260 6 Sensor 015 5V 24V 2410 gt 2 5 Motor B 24 gt 0 24 0 2 OS CN320 3 CN135 1 3 4 Jogger O 0 GND2 Motor 24 50240 2 Rear 40200002 E 3 3 45 Jogger Fence HP Sensor Motor A W24 0 24
165. flash memory card B into the card slot NOTE Make sure that the surface printed B faces the front of the machine Turn on the main power switch while holding down the operation switch Flash Card Utility INTERNAL ROM CARD CARD A2305XXXA ROM A2305XXXB Do you COPY internal ROM to card 0000h VERIFY YES NO A321M506 WMF 4 63 PROGRAM DOWNLOAD 26 March 1998 5 Press the YES key The machine erases the current software then writes the new software to the flash memory card This takes about 100 seconds NOTE The display is inverted black on white during downloading from BICU to flash memory card Flash Card Utility INTERNAL ROM CARD CARD A2305XXXA ROM A2305XXXB Erasing Display during erasing ADRS 200000h RDT 0000h 0000h E Flash Card Utility INTERNAL ROM CARD CARD A2305XXXA ROM A2305XXXB Writing Lo E ADRS XXXXXXh RDT 0000h 0000h Display during writing Installation Copy is Completed Turn main sw of and pull the card A2305XXXB Nov 18 1997 SUM XXXXh Display when the download is CONFIRM complete a Si A321M507 WMF If downloading failed an error message appears as follows At this time press the CONFIRM key to re try the download Display if erasing failed L Flash Card Utility INTERNAL ROM CARD CARD A2305XXXA ROM A2305XXXB Erasing Failed CONFIRM Display if writing f
166. function properly S2 SIB Shorted No symptom Original Width 502 2 3 Open The CPU cannot detect the original size S3 SIB properly APS and ARE do not function correctly Shorted Original 502 7 8 Open The CPU cannot detect the original size Length 1 S4 SIB properly APS and ARE do not function correctly Shorted Original 502 12 Open The CPU cannot detect the original size Length 2 S5 SIB properly APS and ARE do not function correctly Shorted LD Unit Home 220 2 Open 56328 is displayed when the laser beam Position S6 IOB pitch is changed Shorted SC327 is displayed when the laser beam pitch is changed Shorted The Paper Jam indicator will light whenever a copy is made Toner Density 204 3 Open The add toner indicator blinks even if there TD S7 IOB is toner in the development unit Shorted 56390 01 is displayed Paper Exit 58 203 B2 Open The Paper Jam indicator will light whenever IOB a copy is made Shorted The Paper Jam indicator lights even if there is no paper Registration 207 B2 Open The Paper Jam indicator lights even if there S9 IOB is no paper Image Density 219 5 Open 350 03 is displayed after copying ID S10 IOB Shorted 350 01 is displayed after copying Upper Paper 235 2 Open Add Paper is displayed even if there is Height S11 PFB paper If this condition occurred four times 5 501 02 will be displayed Shorted
167. gger H P sensor remains de activated for a certain time when returning to home position 2 The finisher jogger H P sensor remains activated for a certain time when moving away from home position Possible causes e Jogger H P sensor defective e Jogger motor defective 724 Finisher staple hammer motor error Definition B Stapling does not finish for more than 600 ms after the staple hammer motor turned on Possible causes e Staple hammer motor defective e Staple jam SC725 Finisher stack feed out motor error Definition B The stack feed out belt H P sensor does not activate within a certain time after the stack feed out motor turned on og as 22 Possible causes e Stack feed out H P sensor defective e Stack feed out motor defective 7 19 SERVICE CALL CONDITIONS 26 March 1998 5 726 Finisher shift lift motor error Definition B 1 Tray shift does not finish within a certain time after the shift motor turned on 2 The stack height sensor does not activate within a certain time after the shift tray lift motor turned on Possible causes e Shift motor defective e Shift tray lift motor defective 727 Finisher stapler rotation motor error Definition B 1 Stapler rotation does not finish within a certain time after the staple rotation motor turned on 2 The stapler does not return to its home position within a certain time after stapling finished Po
168. ght Stand by mode and Night mode The difference between night stand by mode and night mode is the machine s condition when the machine enters auto off mode Entering night stand by and night modes The machine enters the night stand by mode and night modes when one of the following is done e The auto off timer runs out e The operation switch is pressed to turn the power off If the machine is in one or more of the following conditions the machine enters night stand by mode If not the machine enters night mode e Error or SC condition e An optional G4 unit is installed e An optional fax HDD is installed e Image data is stored in the memory During memory Tx or polling Rx e The handset is off hook An original is in the ADF e The ADF is open What happens in night stand by and night modes When the machine enters either of these modes the fusing lamp and operation switch turn off and only the main power LED is lit Night stand by mode The system 5V is still supplied to all components When the machine detects a ringing signal the 24V supply is activated and the machine automatically prints the incoming message Night mode The system 5V supply also turned off However 5VE 5V for energy saver mode is still activated When the machine detects a ringing signal or off hook signal the machine goes back to night stand by mode and the system 5V and 24V supplies are activated Then the machine receives the in
169. h an ADF do the following procedure after doing all ADF image adjustments on the following page 2 The specification is 1 2 mm 200 A230R114 WMF A231R516 WMF 1 Place the OS A3 test chart on the exposure glass and make a copy from one of the feed stations 2 Measure the distance from the leading edge of the 10th line at both upper corners on the test chart L1 and L2 in the above right illustration 3 If the difference between the two positions is greater than 0 3 mm do the following steps 5 lt 4 Remove the screws that secure the scanner unit and lift up the scanner holding the grip A 5 Put spacer s B at the front or rear of the scanner plate C depending on the skew image f the distance at the right side is longer than at the left side add the spacer s to the front side of the scanner plate e f the distance at the left side is longer than at the right side add the spacer s to the rear side of the scanner plate Difference No of spacers 0 3 mm 0 6 mm 0 6 mm 0 8 mm 0 8 mm 1 1 mm m c o 6 Make a again using the test chart to check the skew If there is still some skew redo steps 5 and 6 If the skew has been corrected secure the scanner unit 2 screws 6 55 COPY ADJUSTMENTS PRINTING SCANNING 26 March 1998 6 11 3 ADF IMAGE ADJUSTMENT Registration 17 A231R511 WMF
170. h and paper feed clutch turn on 500 ms after the main motor turned on T2 The relay clutch and paper feed clutch turn off 138 ms after the registration sensor turned on T3 The relay clutch and paper feed clutch turn on again and the registration clutch turns on 186 ms after the F gate signal laser main scan writing start has been activated T4 The registration clutch turns off 150 ms after the registration sensor turned off J1 Checks whether the sensors are activated within 0 38 s 85 com machine or 0 3 45 com machine after the designated time for these sensors J2 Checks whether the sensors are deactivated within 0 38 5 35 com machine or 0 3 45 com machine after the designated time for these sensors 2 56 26 March 1998 IMAGE TRANSFER AND PAPER SEPARATION 2 9 IMAGE TRANSFER AND PAPER SEPARATION 2 9 1 OVERVIEW s a 2 oo an e gt A230D501 WMF Instead of using a transfer corona or a transfer roller this machine uses a transfer belt unit The transfer belt unit consists of the following parts 1 Contact lever 4 Transfer belt cleaning blade 2 Transfer belt 5 Transfer roller 3 Drive roller 6 Idle roller 7 Pick off pawl The belt has a high electrical resistance so it can hold a high positive electrical potential to attract toner from the drum onto the paper Also the electrical potential attracts the paper itself and helps to sepa
171. hat happens is that the SC history is updated NOTE 1 If the problem concerns electrical circuit boards first disconnect then reconnect the connectors before replacing the PCBs 2 If the problem concerns a motor lock first check the mechanical load before replacing motors or sensors 3 When a Level A or B SC occurs while in an SP mode the display does not indicate the SC number If this occurs check the SC number after leaving the SP mode This does not apply to Level B codes og Qe 22 SERVICE CALL CONDITIONS 26 March 1998 7 1 2 SC CODE DESCRIPTIONS 5 101 Exposure lamp error Definition B The standard white level was not detected properly when scanning the white plate Possible cause Exposure lamp defective e Lamp stabilizer defective e Exposure lamp connector defective e Dirty standard white plate e Dirty scanner mirror or scanner mirror out of position e SBU board defective e SBU connector defective Lens block out of position e SIB defective 120 Scanner home position error 1 Definition B The scanner home position sensor does not detect the on condition during initialization or copying Possible causes Scanner home position sensor defective e Scanner drive motor defective SIB defective Scanner home position sensor connector defective e Scanner drive motor connector defective C121 Scanner home position error 2 Defini
172. he PCU fusing unit and development unit Remove the PCU rail A 2 screws 1 connector Remove the ID sensor bracket B 1 screw 1 connector Remove the ID sensor C 1 screw obs Perform the ID sensor initial setting using SP3 001 2 6 23 DEVELOPMENT 26 March 1998 6 4 DEVELOPMENT 6 4 1 DEVELOPMENT UNIT A230R401 WMF Open the right upper cover and front cover Remove the PCU See Photoconductor Unit Remove the development unit A while pushing the release lever B to the right NOTE Be careful not to nick or scratch the development roller If you are temporarily installing a used development unit for test purposes for a long time perform SP2 220 and 2 802 after installation see the SP mode table for details 6 24 26 March 1998 DEVELOPMENT 6 4 2 DEVELOPMENT FILTER A230R402 WMF 1 Remove the development unit See Development Unit 2 Remove the upper development cover A 2 snap rings 3 Remove the development filter B NOTE Make sure that the surface with a red mark is facing up 6 4 3 DEVELOPMENT ROLLER 5 40 on og A230R403 WMF 1 Remove the development unit and upper development cover See Development and Development Filter 2 Remove the development roller A 2 screws NOTE 1 Be careful not to nick or scratch the development roller 2 When reinstalling the development roller the side seals B
173. he TD sensor Image pixel count The CPU adds up the image data value of each pixel and converts the sum to a value between 0 and 255 The value would be 255 if the page was completely black Vt 10 detection The toner density in the developer is detected once every copy cycle The sensor output voltage Vt 10 is the average of the 10 most recent sensor output voltage readings Toner density measurement The machine compares Vt 10 and Vtref If Vt 10 is greater than Vtref the toner concentration in the development unit is low and more toner should be added When Vt 10 gt Vtref has been detected 20 times toner concentration is consistently low 0 1 is added to Vref and the conditions are checked again The result decides the value of K toner supply rate coefficient which is one of the factors in the toner supply motor on time calculation If Vt 10 gt Vtref has not been detected 20 times 0 2 is subtracted from Vtref and K is decided in a similar way as for the previous condition GAIN determination GAIN is another factor in the toner supply motor on time calculation It is decided using the following data e Vtref Vt 10 e Ten most recent Vt values 2 41 DEVELOPMENT 26 March 1998 Toner supply motor on time calculation The toner supply motor on time is decided using the following formula 7mg cm x Image Pixel Count x Gain Vt Vtref x 10 000 1 rr M Ton
174. he copy mode display Select the paper size and press the Start key to print the list After printing the list exit the copy mode display by pressing the Exit SP mode key gt 4 57 SERVICE PROGRAM MODE 26 March 1998 4 2 7 NIP BAND WIDTH ADJUSTMENT SP1 109 OHP A Paper feed direction A231M509 WMF When paper wrinkling or image off set occurs the pressure from the pressure roller can be adjusted by changing the position of the pressure springs At this time the band width can also be checked with SP 1 109 as follows Do a free run SP5 802 for about 50 sheets Enter SP1 109 and press the 1 key then press the key Press the key to enter copy mode Place an OHP sheet A4 8 5 x5 5 sideways on the by pass feed tray Gr iw O Press the Start key The OHP sheet is stopped in the fusing unit for about 10 seconds then it will be fed out automatically 6 Check the nip band width A The relationship between the position of the pressure spring and the band width is as follows NOTE Check the nip band width around the centre of the OHP Pressure spring position Nip width Upper default position 6 0 0 5 mm Lower 6 5 0 6 mm If the width is out of the above specification the pressure spring should be replaced 26 March 1998 SERVICE PROGRAM MODE 4 2 8 MEMORY ALL CLEAR SP5
175. he following data e Vtref Vt 10 e Vsp Vsg From this point toner density control is done using the new Vtref Image Pixel Count Control Mode This mode should only be used as a temporary measure while waiting for replacement parts such as a TD sensor This mode controls the toner supply amount using the same formula for the toner bottle motor on time However the GAIN value is fixed at 1 and the other coefficients such as toner supply rate keep the values that they had when the toner density control mode was changed over to image pixel count mode 26 March 1998 DEVELOPMENT 2 6 7 TONER NEAR END END DETECTION Toner near end end detection flow chart No Start copying each page Vt 10 detection No 2 5 5 a Has Vtref lt Vt 10 tref Vt 10 lt 0 45 Yes 0 25 Toner supply motor turns while main motor turns Has Vtref lt Vt 10 been detected 40 times been detected 40 times Toner supply motor on time x2 Has Vtref lt Vt 10 been detected 20 more times Toner near end Toner supply motor turns ID sensor check Vsp lt 2 0 V Have 90 copies been made since toner near end detection Toner end 2 43 while main motor turns Has Vtref Vt 10 been detected 20 more times Yes A231D538 WMF DEVELOPMENT 26 March 1998 Toner near end
176. he front cover and right cover vcio 5 Er on Cs og 2 Remove the screw A 3 Release the fusing lever B and slide out the fusing unit C NOTE After removing the fusing unit close the right cover 6 39 FUSING 26 March 1998 6 7 2 HOT ROLLER STRIPPERS AND FUSING LAMP A231R503 WMF G A230R603 WMF 1 Remove the fusing upper cover A 4 screws 2 Remove the spring B Then remove the hot roller stripper C 3 Remove the front fusing lamp wire D 1 screw for 115V machines 2 screws for 230V machines 4 Remove the rear fusing lamp wire E 1 screw for 115V machines 2 screws for 230V machines Remove the front lamp holder F 1 screw 6 Remove the fusing lamp G 1 lamp for 115V machines 2 lamps for 230V machines NOTE Do not touch the glass part of the fusing lamp with bare hands 26 March 1998 FUSING 6 7 3 THERMISTOR AND THERMOFUSE Sanaa 5 D es on zx og A231R525 WMF 1 Remove the fusing upper cover See Hot Roller Strippers and Fusing Lamp 2 Remove the thermistor A 1 screw 1 connector 3 Remove the thermofuse B 3 screws Route the cable of the thermistor and thermofuse as shown 6 41 FUSING 26 March 1998 6 7 4 CLEANING ROLLER A230R604 WMF 1 Remove the fusing unit 2 Remove the fusing entrance guide A 2 screws NOTE The standard position of the fusing entrance gu
177. he fusing temperature goes 20 C below or 20 C over the stand by temperature after warm up is completed og Qs 30 22 Possible causes e Poor thermistor connector connection Poor fusing unit connection 7 15 SERVICE CALL CONDITIONS 26 March 1998 SC547 Zero cross signal malfunction Definition A Zero cross signals are not detected within a certain period within 500 ms after the main power switch has been turned on Possible causes Power supply board defective Noise on the ac power line 5 548 Fusing unit installation error Definition A The machine cannot detect the fusing unit when the front cover and right cover are closed Possible causes e Fusing unit is not installed Poor fusing unit connection SC599 1 bin tray motor lock optional 1 bin tray unit Definition C A 1 bin tray motor lock signal is not detected for more than 0 3 seconds during rotation Possible causes e 1 bin tray motor defective e Too much load on the drive mechanism e Poor motor connector connection SC601 Communication error between BICU and scanner unit Definition B The BICU cannot communicate with the BIS board properly Possible causes Poor connection between the SIB and SIFB boards e Poor connection between the SIFB and BICU boards SIB board defective e SIFB board defective e BICU board defective 7 16 26 March 1998 SERVICE CALL CONDITIONS
178. he heater assembly D 1 screw Install four harness clamps E as shown Route the harness F and connect it to the harness G and heater harness H E EE 26 March 1998 GENERAL CAUTIONS 4 SERVICE TABLES 4 1 GENERAL CAUTIONS Do not turn off the either of the power switches while any of the electrical components are active Doing so might cause damage to units such as the transfer belt drum and development unit when they are pulled out of or put back into the copier 4 1 1 DRUM An organic photoconductor OPC drum is more sensitive to light and ammonia gas than a selenium drum Follow the cautions below when handling an OPC drum 1 Never expose the drum to direct sunlight 2 Never expose the drum to direct light of more than 1 000 Lux for more than a minute 3 Never touch the drum surface with bare hands When the drum surface is touched with a finger or becomes dirty wipe it with a dry cloth or clean it with wet cotton Wipe with a dry cloth after cleaning with wet cotton Never use alcohol to clean the drum alcohol dissolves the drum surface Store the drum in a cool dry place away from heat 6 Take care not to scratch the drum as the drum layer is thin and is easily damaged Never expose the drum to corrosive gases such as ammonia gas 8 Always keep the drum in the protective sheet when keeping the drum unit or the drum itself out of the copier Doing so avoids exposing it to bright light or direct
179. he odd pixels 2 Signal Composition NAD30S and NAD30 only Analog signals for odd and even pixels from the CCD are merged by a switching device 3 Signal Amplification The analog signal is amplified by operational amplifiers in the AGC circuit The maximum gains of the operational amplifiers are controlled by the CPU on the BICU board After the above processing the analog signals are converted to 8 bit signals by the A D converter This gives a value for each pixel on a scale of 256 grades Then this data goes to the BICU board thorough the SIB and SIFB boards NAD30S and NAD30 each send one 8 bit signal and NAD40 sends two 8 bit signals to the BICU board 2 6 26 March 1998 IMAGE PROCESSING 2 2 3 AUTO IMAGE DENSITY ADS 15 o 75mm os lt gt Sub scan direction A231D530 WMf This mode prevents the background of an original from appearing on copies The copier scans the auto image density detection area A This corresponds to a narrow strip at one end of the main scan line as shown in the diagram As the scanner scans down the page the IPU on the BICU detects the peak white level for each scan line within this narrow strip only From this peak white level the IPU determines the reference value for A D conversion for the scan line Then the IPU sends the reference value to the A D controller on the SBU When an original with a gray background i
180. he pick up feed and separation rollers in the paper feed stations Start Reset the Total Copy Counter by Magnification Resets all counters of SP7 301 Press 1 to reset Reset the Total Copy Counter by Image Editing Resets all counters of SP7 303 Press 1 to reset Electrical Total Counter Reset Resets the electrical total counter Press 1 to reset Usually this SP mode is done at installation This SP mode affects only once when the minus counter value Reset the Total Copy Counter by Copy Mode Resets all counters of SP7 304 Press 1 to reset Reset the Total Copy Counter by Multiple Copies Resets all counters of SP7 305 Press 1 to reset 4 50 26 March 1998 SERVICE PROGRAM MODE 4 2 3 TEST PATTERN PRINTING SP2 902 NOTE Do not operate the machine until the test pattern is printed out completely Otherwise an SC may occur 1 Access the SP mode which contains the test pattern you need Press the key on the operation panel to access the copy mode display 3 Select required copy features such as paper size image density and reproduction ratio Press the Start key to print the test pattern After checking the test pattern exit copy mode by pressing the key again 6 Exit the SP mode Test Pattern Table SP2 902 2 Test Pattern Printing IPU
181. he relationships between the coefficient of the filter and the filter strengths are as follows The filter strengths and the coefficient for each mode can be adjusted with SP4 903 MTF Filter Coefficient SP4 903 11 15 17 19 41 47 Weak 11 gt 8 525159 50555410579 3 6 Strong MTF Filter Strength SP4 903 20 27 50 53 55 Weak x0 25 gt x0 5 gt x2 x4 Strong Smoothing Filter Coefficient SP4 903 16 Weak 7 565055525134 Strong A stronger MTF filter leads to sharper lines A stronger smoothing filter leads to a greater degree of smoothing Refer to the tables in SP Modes for Each Image Process for more information Main scan magnification reduction Reduction and enlargement in the sub scan direction are done by changing the scanner speed However reduction and enlargement in the main scan direction are handled by the IPU chip To reduce or enlarge an image imaginary points are calculated that would correspond to a physical enlargement or reduction of the image The image density is then calculated for each of the imaginary points based on the image data of the nearest four true points The calculated image data then becomes the new reduced or enlarged image data 2 14 26 March 1998 IMAGE PROCESSING Gamma y corrEctionr Gamma correction ensures accurate generation of the various shades in the gray scale from black to white accounting for the characteristics of the scanner and printer S
182. he right cover open for a long time cover the drum with paper or remove the PCU then cover the PCU with paper Sa 5 Er on Cs og Remove the transfer belt unit See Transfer Belt Unit Remove the screw A which secures the link B Remove the unit band C Remove the clip D and bushing Remove the right cover F 1 connector Im PAPER FEED 26 March 1998 6 6 PAPER FEED 6 6 1 PICK UP SEPARATION AND FEED ROLLERS B A230R918 wmf A C 1 Remove the paper tray 2 Remove the pick up roller A 3 Remove the feed B and separation rollers C 1 clip each NOTE Do not touch the roller surface with bare hands After installing the new rollers do SP 7 816 for the appropriate paper tray 6 6 2 LOWER RIGHT COVER LOWER REAR COVER NOTE If the optional LCT has been installed remove the LCT before doing the following procedure 1 Remove the upper connector cover A and lower connector cover B then disconnect the harnesses C 2 Remove the lower rear cover D 4 screws 3 Remove the unit band E 1 clip and remove the vertical transport cover F Remove the lower right cover G 5 screws 6 32 26 March 1998 PAPER FEED 6 6 3 RELAY UPPER PAPER FEED LOWER PAPER FEED CLUTCHES A230R909 WMF Remove the lower rear cover See Lower Right Cover Lower Rear Cover Remove the first paper feed clutch bracket A
183. her location in the future Remove the tapes on the exterior of the copier 2 Open the duplex unit A231 and A232 machines and open the upper right cover A 3 Remove the pin B Pull out the paper trays and remove the bottom plate stoppers C 5 Install the middle front cover D which is in the second paper tray NOTE If the optional paper tray unit is installed this step is done while installing the paper tray unit 3 6 26 March 1998 COPIER INSTALLATION Installation A2301110 WMF D A2311532 WMF 6 Open the front cover 7 Push down the lever 1 Then pull the PCU A out a small distance 2 and move the development unit B to the left 3 so that the development unit is away from the drum then slide out the PCU completely 8 Remove three clamps C lt 9 Move the lever D to the right then slide out the development unit E 3 7 26 March 1998 COPIER INSTALLATION NN WN UN N NW X A2311533 WMF A2311534 WMF A2311535 WMF 10 Remove the entrance seal plate A 2 clamps 11 Remove two screws B and take out the development roller unit C 12 Pour all developer D into the development unit uniformly 3 8 26 March 1998 COPIER INSTALLATION 13 14 15 16 17 18 A2311536 WMF 2 5 s o A2311509 WMF Reassemble the development unit NO
184. hould be registered again After selecting press the Original Type key and the same time If the setting is completed a mark will be displayed before the selection Printer Counter Display Selects whether or not the total printer counter is displayed in the UP mode 0 Off 1 On Mechanical Counter Detection Checks whether the mechanical counter inside the inner cover is connected or not 0 Not detected 1 Detected 2 Unknown Recovery Time for Low Power Mode Selects the recovery time from the low power mode SNC Printing All Data Prints all the system parameter lists See the System Parameter and Data Lists section for how to print the lists SNC Printing SP Mode Data Prints the SP mode data list See the System Parameter and Data Lists section for how to print the lists 1 Start SNC Printing UP Mode Data Prints the UP mode data list See the System Parameter and Data Lists section for how to print the lists 1 Start SMC Printing Machine Status Data Prints the machine status history data list See the System Parameter and Data Lists section for how to print the lists 1 Start SMC Printing UP Mode Copy Prints the Copy Mode list UP Mode No 10 See the System Parameter and Data Lists section for how to print the lists 1 Start SMC Printing Large Font Size Prints the SP mode data
185. hronizing detector I determines the main scan starting position LASER EXPOSURE 26 March 1998 2 3 3 AUTO POWER CONTROL APS Front Cover Safety switch and Upper Right Cover Switch LEVEL1 VIDEO gt LDOFF LEVEL2 A231D502 WMF IC2 and IC3 on the LDDR drive the laser diodes Even if a constant electric current is applied to the laser diode the intensity of the output light changes with the temperature The intensity of the output decreases as the temperature increases In order to keep the output level constant IC2 and IC3 monitor the current passing through the photodiode PD Then they increase or decrease the current to the laser diode as necessary comparing it with the reference levels REF1 and REF2 This auto power control is done just after the machine is turned on and during printing while the laser diode is active The reference levels are adjusted on the production line Do not touch the variable resistors on the LDDR in the field 2 24 26 March 1998 LASER EXPOSURE 2 3 4 DUAL BEAM WRITING B a 2 oo an e A D A230D203 WMF This LD unit has two laser diodes LD1 A and LD2 B for writing the image This means that each face of the polygon mirror writes two main scan lines and twelve main scans are produced when the polygon mirror rotates once The reasons for this mechanism are as follows 1
186. ide is the upper position using the lower screw holes B 3 Remove the lower fusing cover C 1 screw NOTE When removing the lower fusing cover be careful not to drop the cleaning roller onto the hot roller 4 Replace the cleaning roller D 26 March 1998 FUSING 6 7 5 HOT ROLLER AND PRESSURE ROLLER A230R606 WMF A230R607 WMF Remove the fusing lamp See Hot Roller Strippers and Fusing Lamp Remove the pressure springs A Remove the hot roller stripper bracket B 4 screws pee Remove the hot roller assembly then replace the hot roller 2 C rings 1 gear 2 bushings 5 es on os og Remove the pressure roller assembly Remove the fusing knob D 1 screw Remove the spring E Replace the pressure roller F 2 C rings 2 bushings NOTE 1 Before installing the new hot roller peel off 3 cm 1 inch from both ends of the protective sheet on the new roller 2 Do not touch the surface of the rollers 3 Be careful not to damage the surface of the hot roller 4 The standard pressure roller position is the upper position 5 When reinstalling the hot roller assembly and pressure roller assembly make sure that the flange position of the bushings is as shown 6 When reinstalling the C rings G of the hot roller make sure that the position of the C rings is as shown DRIVE AREA 26 March 1998 6 8 DRIVE AREA 6 8 1 REGISTRATI
187. in eet entend rende 1 2 GCONMECION od o ei Eo Ed EE us 1 9 Base COVOl ceto ET 1 4 Copy TRAY ue cee edite e Oe 1 5 Tray Bracket 1 1 2 8 Stepped Screw 3 5 9 SCrEWw M e 1 10 Tapping Screw M3X6 2 11 Tapping Screw 3 14 1 12 Tapping Screw MOX 1 TP 1 14 Installation Procedure 1 26 March 1998 1 BIN TRAY UNIT INSTALLATION 3 6 2 INSTALLATION PROCEDURE Installation A2301302 WMF NOTE The interchange unit A690 must be installed before installing the 1 bin tray unit NCAUTION Unplug the main machine power cord before starting the following procedure 1 Remove the scanner unit NOTE If the ARDF is installed remove the ARDF before removing the scanner unit 1 Remove the stand rear cover A 2 screws 2 Disconnect the scanner board B and the power connector C 3 Disconnect the scanner harness D 4 Remove the scanner unit E 2 knob screws NOTE 1 Hold the scanner unit as shown in the above illustration Otherwise it may be damaged 2 Make sure the ha
188. ing flow chart shows how to install the optional units more efficiently Unpack the copier Does the user require the Paper Tray Unit LCT or Finisher No Place the copier on the Paper Tray Unit Install the Paper Tray Unit Install the copier What is the machine type NAD30S NAD30 NAD40 Does the user require the Duplex Unit or One bin Tray Yes No Remove the scanner unit Y Install the bridge unit if required Install the interchange unit Install the bridge unit if required Install the one bin tray if required If the user requires the one bin tray Replace the scanner unit Remove the scanner unit Install the one bin tray Y Y Replace the scanner unit Install the by pass feed unit if required Install the duplex unit if required Does the user require the Image Enhancement Kit hard disk Install the Image Enhancement Yes No Kit hard disk if required Install the Electrical Sort Kit 8 MB SIMM Install the hard disk Install the remaining options in any order A2311513 WMF Bridge Unit Needed for the finishers and the external output tray Interchange Unit Needed for the 1 bin tray and the NAD30S duplex unit Paper Tray Unit Needed for the LCT and finishers Other requirements See Overall Machine Information Installation Option Table 3 4 26 March 1998
189. installed do steps 8 to 12 8 Remove the front cover A and rear cover B of the by pass feed unit 9 Remove the indicated parts of both covers C 10 Reinstall the front and rear covers 11 Remove the covers D 12 Install the bracket E 1 screw 3 37 DUPLEX UNIT INSTALLATION 26 March 1998 A2301653 WMF B 13 Open the by pass feed table A if it has been installed 14 the duplex unit on the shaft B 15 Connect the link C to the pin D 1 snap ring 16 Connect the duplex I F harness 17 Install the connector cover F 1 screw 18 Turn on the main power switch and check the duplex unit s operation 26 March 1998 BY PASS FEED UNIT INSTALLATION 3 10 BY PASS FEED UNIT INSTALLATION 3 10 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Q ty 1 Screw 2 2 Screw 4 10 0 4 BIODEGOVOLD ado ere nao Un o 1 T Rear GOVBD a oc sd Ra mam tmm 1 e S 5 S 3 10 2 INSTALLATION PROCEDURE A2301602 WMF NCAUTION Unplug the main machine power cord before starting the following procedure 1 Unpack the by pass feed unit 2 Remove three covers A a cap B and the seal C from the right side of the main machine BY PASS FEED UNIT INSTALLATION 26 March 1998 A2301603 WMF A23016
190. is detected using the TD sensor output data If Vtref Vt 10 is less than or equal to 0 45 the toner concentration is very low K becomes 0 25 and the machine enters the toner near end condition Then the toner supply motor turns on to supply toner If Vtref Vt 10 is greater than 0 45 the toner concentration is still not terribly low but the machine does further tests by comparing Vtref and Vt 10 If the machine has detected 40 times that Vt 10 is greater than Vtref the toner supply motor turns on for double the time that it would be with the previous formula If the toner concentration is still low the machine enters the toner near end condition Toner end is detected using the ID sensor If Vsp is less than 2 0V the density of the ID sensor pattern is very light so the machine detects a toner end condition However if Vsp stays bigger than 2 0V but 90 copies have been after toner near end was determined the machine enters the toner end condition The number of copies between toner near end and toner end can be changed with SP2 213 The default is 90 2 44 26 March 1998 2 6 8 TONER END RECOVERY Toner end recovery flow chart Toner end or Toner near end Cover switch off on No Yes Toner supply motor turns on and detection No Is the toner concentration low Yes Has the toner supply motor been turned on 20 times No Yes gt
191. isher main board defective e BICU board defective 5 623 Communication error between BICU and paper tray unit Definition B The BICU cannot communicate with the paper tray unit properly Possible causes e Poor connection between the BICU board and the paper tray unit main board e Paper tray unit main board defective e BICU board defective SC624 Communication error between BICU and LCT Definition B The BICU cannot communicate with the LCT properly Possible causes e Poor connection between the BICU board and the LCT main board e LCT main board defective e BICU board defective 5 630 CSS RSS communication error between line adapter and CSS center Japan ony 5 700 ADF original pick up malfunction Definition B The original stopper H P sensor does not activate three times consecutively after the pick up motor has turned on Possible causes Original stopper sensor defective e Pick up motor defective e Timing belt out of position e ADF main board defective 7 18 26 March 1998 SERVICE CALL CONDITIONS 701 ADF original pick up malfunction Definition B The original pick up H P sensor does not activate three times consecutively after the pick up motor has turned on Possible causes Original pick up sensor defective e Pick up motor defective e ADF main board defective 722 Finisher jogger motor error Definition B 1 The finisher jo
192. it Home Informs the CPU when the LD unit is at the Position home positon S7 17 Toner Density Detects the amount of toner inside the TD development unit 58 24 Paper Exit 59 27 Registration Detects the leading edge of the copy paper to determine the stop timing of the paper feed clutch and detects misfeeds 10 26 Image Density Detects the density of various patterns and ID the reflectivity of the drum for process control 11 28 Upper Paper Detects when the paper in the upper paper Height tray is at the feed height 12 30 Lower Paper Detects when the paper in the lower paper Height tray is at the feed height 13 29 Upper Paper End Informs the CPU when the upper paper tray runs out of paper Detects misfeeds 14 31 Lower Paper End Informs the CPU when the lower paper tray runs out of paper 15 33 Upper Relay Detects misfeeds 16 32 Lower Relay Detects misfeeds 17 48 Upper Tray Informs the CPU whether the upper paper tray is set into the machine or not 18 46 Lower Tray Informs the CPU whether the lower paper tray is set into the machine or not 19 38 Transfer Belt Informs the CPU of the current position of the Position transfer belt unit 20 18 Toner Overflow Detects toner overflow in the toner collection tank Switches SW1 43 Right Lower Detects whether the right lower cover is open Cover or closed SW2 49 Right Upper Cut the 5VLD and 24V dc power line and C
193. key 1 Yes Counter Copy counter in copy mode Mode 3 Restricted Access This SP is for Japan only Do not 0 No Control for other change the value 1 Yes counters Copy Mode 52 Restricted Access Selects whether restricted access 0 No Control for Key control is done when using the key 1 Yes Counter Fax counter in fax mode Mode 53 Restricted Access This SP is Japan only Do not 0 No Control for other change the value 1 Yes counters fax Mode 62 Restricted Access Selects whether restricted access 0 No Control for Key control is done when using the key 1 Yes Counter Printer counter in printer mode Mode 63 Restricted Access Japanese version only 0 No Control for other Do not change the value 1 Yes counters Printer Mode 4 32 26 March 1998 Mode No Class 3 SERVICE PROGRAM MODE Function Settings 82 Restricted Access Control for Key Counter Other Enhanced Kit Japanese version only Do not change the value 0 No 1 Yes Restricted Access Control for other counters Other Enhanced Kit Japanese version only Do not change the value PM Alarm Interval Sets the PM interval with an alarm When the setting is 0 this function is disabled 0 255 1k copies step 150 k copies Jam Alarm Level RSS function Jam Auto Call RSS function Japanese version only Do not change the values 0 1
194. l use thicker paper from the bypass tray so separate settings are available for this tray By default the current for paper narrower than 216 mm is 1 5 times the normal current The drawing shows the SP modes which control these currents Currents applied to leading edge and image areas The transfer current can also be different for the leading edge and the image area There are separate adjustments for bypass feed for this also The timing for starting to apply leading edge current for the switchover from leading edge current to image area current and for switching off at the trailing edge can also be changed Transfer current SP modes Image areas Paper trays Side 1 SP2 301 1 Side 2 SP2 301 2 Bypass SP2 301 4 Leading edge areas Paper trays SP2 301 3 Bypass SP2 301 5 Timing Leading edge start SP2 91 1 1 Switchover to image area SP2 911 2 Image area end trailing edge SP2 91 1 3 2 62 26 March 1998 IMAGE TRANSFER AND PAPER SEPARATION 2 9 6 TRANSFER BELT CLEANING MECHANISM Q A 22 C A M no oo an e CLE A231D524 WMF The cleaning blade A always contacts the transfer belt It scrapes off any toner and paper dust remaining on the belt To remove toner and other particles that are accumulated at the edge of the cleaning blade the transfer belt turns in reverse at the end of every copy job in the same way as the drum cleani
195. lect the SP number that corresponds to the component you wish to check Press 1 then press to check that component Press 0 to interrupt the test decem e et If you wish to check another component press the Next or Prev Key No Description No Description 1 Upper Paper Feed Clutch 35 Relay Clutch PTU 2 Lower Paper Feed Clutch 36 Relay Clutch 3 Upper Paper Feed Clutch PTU 37 Not used 4 Lower Paper Feed Clutch PTU 38 Relay Clutch LCT 5 Paper Feed Clutch By pass 39 Registration Clutch 6 Paper Feed Clutch LCT 40 Not used 7 12 Not used 41 Exit Junction Gate Solenoid Interchange Unit 13 Pick up Solenoid By pass 42 Duplex Junction Gate Solenoid Interchange Unit 14 Pick up Solenoid LCT 43 44 Not used 15 16 Not used 45 Inverter Gate Solenoid Duplex 17 Upper Transport Motor Finishers 46 Not used 18 Lower Transport Motor 3 000 47 Junction Gate Solenoid sheet Finisher only Bridge Unit 19 Shift Tray Exit Motor 3 000 sheet 48 49 Not used Finisher Exit Motor 1 000 sheet Finisher 20 Staple Hammer Motor Finishers 50 Tray Junction Gate Solenoid 3 000 sheet Finisher only 21 Punch Motor Punch Unit 51 Stapler Junction Gate Solenoid Finishers 22 24 Not used 52 Positioning Roller Solenoid Finishers 25 LCT Motor LCT 53 55 Not used 26 Tray Motor PTU 56 Toner Supply Motor 27 Not
196. list with a large font size See the System Parameter and Data Lists section for how to print the lists This SP mode is used when the SMC list is sent by fax to the number stored with SP5 812 4 36 1 Start 26 March 1998 SERVICE PROGRAM MODE Mode No Class 1 Function Settings and 2 Class 3 6 006 1 ADF Side to Side Adjusts the printing side to side 3 43 Registration registration in the ADF mode 0 1 mm step Use the key to toggle between 0 0 mm and 2 ADF Leading Adjusts the original stop position 29 29 Edge Registration 0 18 mm step Simplex 0 0 mm Use the key to toggle between and 3 ADF Leading Adjusts the original stop position 29 29 Edge Registration against the original left scale in one 0 18 mm step Duplex front sided original mode 0 0 mm Use the key to toggle between and 4 ADF Leading Adjusts the original stop position 29 29 Edge Registration against the original left scale in two 0 1 mm step Duplex rear sided original mode 0 0 Use the key to toggle between and r details on the correct way to use SP 6 006 see the ADF service manual 6 007 1 ADF Input Check Displays the signals received from 1 sensors and switches of the ADF See the Input Check section for details 2 ADF Input Check Displays the signals received from 2 sensors and switches of the ADF
197. loper TD Sensor Manual Setting VTS Adjusts the TD sensor output VT Change this value after replacing the development unit with another one that already contains toner For example when using a development unit from another machine for test purposes To adjust VT use a similar procedure as for SP2 220 1 0 5 0 0 01 V step 4 00 V TD Sensor Manual Setting VTMAX Adjusts the maximum value for SP2 802 1 1 0 5 0 0 01V step 4 10 V TD Sensor Manual Setting VTMIN Adjusts the minimum value for SP2 802 1 1 0 5 0 0 01V step 3 70 V Process Initial Setting Performs the process initial setting Press 1 to start This SP should be performed after doing SP2 801 1 at installation and after replacing the drum 1 Start Test Pattern Printing IPU Prints the test patterns for the IPU chip See section 4 2 3 for how to print test patterns This SP mode is useful for finding whether the BICU or the SBU is defective If the printout is not OK the BICU is defective 4 15 SERVICE PROGRAM MODE 26 March 1998 Mode No Class 3 Function Settings 2 902 3 Test Pattern Prints the printer test patterns Printing See section 4 2 3 for how to print test patterns Printing Example 10 Trimming Area This SP mode is useful for finding whether the LDDR or the BICU is defective If the printout is
198. mains 2 Change between and using the 94 key before entering the required value 3 Exit SP mode 4 6 26 March 1998 SERVICE PROGRAM MODE 4 2 2 SERVICE PROGRAM MODE TABLES NOTE 1 In the Function column comments are in italics 2 In the Settings column the default value is in bold letters 3 An asterisk after the mode number means that this mode is stored in the NVRAM If you do a RAM reset all these SP modes will be reset to their factory settings 4 In the Settings column 40 means NAD40 and 30 means NAD30S 30 Mode No Class 3 Function Settings Leading Edge Registration Adjusts the printing leading edge registration using the trimming area pattern SP2 902 3 No 10 Use the key to toggle between and before entering the value The specification is 2 mm See Replacement and Adjustment Copy Adjustments for details on SP 1 001 and 1 002 9 9 0 1 mm step 3 0 Side to Side Registration 1st paper feed Adjusts the printing side to side registration from the 1st paper feed station using the trimming area pattern SP2 902 3 No 10 Use the key to toggle between and before entering the value The specification is 2 1 5 mm 9 9 0 1 mm step 3 0 Side to Side Registration 2nd paper feed Adjusts the printing side to side registration from the 2nd paper feed station using the trimming area patter
199. n I O board defective e High voltage supply board defective e Dirty ID sensor Defect at ID sensor pattern writing area of the drum og ase 22 7 5 SERVICE CALL CONDITIONS 26 March 1998 350 2 ID sensor error 2 Definition B The ID sensor output voltage is 5 0V and the PWM signal input to the ID sensor is 0 when checking the ID sensor pattern Possible causes e ID sensor defective D sensor connector defective e Poor ID sensor connector connection O board defective High voltage supply board defective Dirty ID sensor e Defect at the ID sensor pattern writing area of the drum 350 3 ID sensor error 3 Definition B The ID sensor pattern edge voltage is detected to be not 2 5V twice consecutively during an 800 ms interval Possible causes e ID sensor defective D sensor connector defective e Poor ID sensor connector connection O board defective High voltage supply board defective Dirty ID sensor e Defect at the ID sensor pattern writing area of the drum SC350 4 ID sensor error 4 Definition B One of the following ID sensor output voltages is detected at ID sensor initialization 1 Vsg lt 4 0V when the maximum PWM input 255 is applied to the ID sensor 2 Vsg 4 0V when the minimum PWM input 0 is applied to the ID sensor Possible causes e ID sensor defective e ID sensor connector defective e Poor ID sen
200. n SP2 902 3 No 10 Use the key to toggle between and before entering the value The specification is 2 1 5 mm 9 9 0 1 mm step 3 0 Side to Side Registration 8rd paper feed Option PFU tray 1 if present Adjusts the printing side to side registration from the 3rd paper feed station using the trimming area pattern SP2 902 3 No 10 Use the key to toggle between and before entering the value The specification is 2 1 5 mm 9 9 0 1 mm step 2 0 Side to Side Registration 4th paper feed Option PFU tray 2 if present Adjusts the printing side to side registration from the 4th paper feed station using the trimming area pattern SP2 902 3 No 10 Use the key to toggle between and before entering the value The specification is 2 1 5 mm 4 7 9 9 0 1 mm step 2 0 SERVICE PROGRAM MODE Mode No Class 3 Function 26 March 1998 Settings 5 Side to Side Registration Duplex Adjusts the printing side to side registration from the duplex tray using the trimming area pattern SP2 902 3 No 10 Use the key to toggle between and before entering the value The specification is 2 1 5 mm See Replacement and Adjustment Copy Adjustments for details on SP1 002 9 9 0 1 mm step 0 0 Side to Side Registration By pass feed Adjusts the printing side to side regis
201. nal Jam Latest Total Counter Value at Original Jam 2nd Latest Total Counter Value at Original Jam 8rd Latest 4 47 SERVICE PROGRAM MODE Mode No Class 3 Function 26 March 1998 Settings 14 Total Counter Value at Original Jam 4th Latest Total Counter Value at Original Jam 5th Latest Total Counter Value at Original Jam 6th Latest Total Counter Value at Original Jam 7th Latest Total Counter Value at Original Jam 8th Latest Total Counter Value at Original Jam 9th Latest Total Counter Value at Original Jam 10th Latest Displays the last 5 digits of the total counter value for the most recent 10 copy jams ROM Version Display BICU ROM Version Display CSS ROM Version Display HDD Controller ROM Version Display ADF ROM Version Display SIB ROM Version Display Finisher ROM Version Display Paper Tray Unit ROM Version Display LCT Displays the ROM versions 4 48 26 March 1998 Mode No Class 3 SERVICE PROGRAM MODE Function Settings 9 ROM Version Display Mail Box ROM Version Display FCU ROM Version Display Printer Controller Displays the ROM versions ROM Version Di
202. nary picture processing mode Text mode Binary picture processing Text photo mode Error diffusion 2 levels Photo mode Dithering 2 levels The above information is expressed as a diagram in the Image Processing Path section 2 15 IMAGE PROCESSING 26 March 1998 Grayscale processing As stated on the previous page this process generates up to 256 image density levels for each pixel To realize this this machine uses a form of pulse width modulation In this machine pulse width modulation consists of the following processes e Laser diode pulse positioning e Laser diode power pulse width modulation Laser diode power and pulse width modulation is done by the laser diode drive board LDDR Briefly the width of the laser pulse for a pixel depends on the output level from 0 to 255 required for the pixel This machine can also change the laser pulse position at the left side of the pixel at the center or at the right side automatically depending on the location of the image pixel so that the edges of characters and lines become clearer There is no SP mode adjustment for this unlike in some earlier models Binary picture processing Each video signal level is converted from 8 bit to 1 bit black and white image data in accordance with a threshold value The threshold value can be adjusted with SP 4 904 12 Error diffusion This is used only in text photo mode The error diffusion process reduces the difference in co
203. nction If any low image density data which is lower than a threshold level remains after auto shading this data will be changed to 0 white The threshold level can be changed with SP4 903 34 37 For example for letter mode use SP 4 903 34 2 12 26 March 1998 IMAGE PROCESSING Independent dot erase Original image a os oo an 1 2 4 5 7 A8 9 10 A11 A12 3x5 area Image data A231D528 WMF By default this process is used only in letter mode and copied original mode However it can be enabled for other modes by SP mode It erases independent black dots appearing in the copy or reduces their image density The software compares each pixel C in the diagram above left with the pixels around the edges of the surrounding 3 x 5 area If the sum of the pixels at the edges is smaller than the threshold value stored in SP4 903 28 32 e g for letter mode with binary picture processing it is SP 4 903 29 the object pixel is changed to 0 white or reduced in density to an average of the pixels around the edge depending on the SP mode setting Each SP mode has 16 levels as follows A The sum of the pixels at the edges SP mode Function SP mode value value 0 Disabled 8 Disabled If A lt 16 the pixel is deleted 9 lt 16 density is reduced If A lt 32 the pixel is d
204. ng blade mechanism The toner and paper dust that is scraped off falls down into the toner collection tank B which is in the transfer belt unit This toner is not recycled When the toner overflow sensor C in the transfer belt unit detects a toner overflow condition the toner overflow indicator is lit After this condition 999 copies can be made before operation is disabled 2 63 IMAGE FUSING AND PAPER EXIT 26 March 1998 2 10 IMAGE FUSING AND PAPER EXIT 2 10 1 OVERVIEW A231D514 WMF This fusing unit contains pressure roller strippers 6 These prevent the paper from wrapping around the pressure roller which is possible for a vertical paper transport mechanism The fusing unit and paper exit area consist of the following parts 1 Paper exit roller 8 Cleaning roller 2 Fusing exit sensor 9 Entrance guide 3 Junction gate 10 Hot roller 4 Transport roller NAD30 and 11 Fusing lamp s see the note NAD40 only 12 Thermistor Pressure spring 13 Thermofuse Pressure roller strippers 14 Hot roller strippers 7 Pressure roller NOTE For 115V machines One lamp is used For 230V machines Two lamps are used 26 March 1998 IMAGE FUSING AND PAPER EXIT 2 10 2 FUSING DRIVE AND RELEASE MECHANISM a 2 oo an e F A230D604 WMF A230D605 WMF The main motor A drives the fusing unit through a train of gears and drive
205. ning the test unit and the machine that you are going to move it to 2 Install the test development unit then input the VREF for this unit into SP2 220 3 After the test put back the old development unit and change SP2 220 back to the original value 1 00 5 00 0 01V step 4 00V 2 223 VT Display Displays the current TD sensor output voltage VT 10 Display Displays the average of the most recent 10 TD sensor outputs VT Change Rate Display Displays the rate of change in the TD sensor output GAIN Display Displays the value of GAIN which is used for calculating the toner supply motor on time Image Pixel Count Display Displays the image pixel count 4 13 SERVICE PROGRAM MODE Mode No Class 3 Function 26 March 1998 Settings 1 Transfer Current Adjustment 1st side of the paper Adjusts the current applied to the transfer belt during copying on the 1st side of the paper If the user uses thicker paper the current may have to be increased to ensure sufficient transfer of toner 20 100 1 uA step 45 40 35 30 Transfer Current Adjustment 2nd side of the paper Adjusts the current applied to the transfer belt during copying on the 2nd side of the paper See above 20 100 1 uA step 32 40 25 uA 30 Transfer Current Adjustment Leading edge of the paper Adjusts the curren
206. not OK the LDDR is defective 2 909 1 Main Scan Adjusts the magnification in the main 2 0 2 0 Magnification scan direction for copy mode 0 1 step Copier 0 00 Use the key to toggle between and See Replacement and Adjustment Copy Adjustments for details 2 Main Scan Adjusts the magnification in the main 2 0 2 0 Magnification scan direction when printing from a 0 1 step Printer personal computer 0 00 Use the key to toggle between and See Replacement and Adjustment Copy Adjustments for details 2 911 1 Transfer Current Adjusts the transfer current on timing 30 30 Timing at the leading edge 1 mm step On Timing 2 Transfer Current Adjusts the transfer current switch 30 30 Timing timing This determines when the 1 mm step Switch Timing leading edge stops and the image 10 mm area current begins see SP 2 301 3 Transfer Current Adjusts the transfer current off timing 30 30 Timing 5 mm is 5 mm after the trailing 1 mm step Off Timing edge 5 2 912 Drum Reverse Designer use only Do not change 0 50 Rotation Time the value 1 ms step 50 ms 2 913 Test Pattern ID Adjusts the image density for printing 0 15 Adjustment test patterns with SP2 902 Usually 1 step this SP mode is only used by 15 designers The value is cleared when the main power switch is turned off and on 2 914 1 Process Control Adjusts the charge roller voltage 0 400 S
207. nt the single dot grid pattern SP2 902 3 no 5 2 Check the magnification and adjust the magnification using SP2 909 1 if necessary The specification is 1 6 52 26 March 1998 COPY ADJUSTMENTS PRINTING SCANNING Parallelogram Image Adjustment Do the following procedure if a parallelogram is printed while adjusting the printing registration or the printing margin using a trimming area pattern NOTE The following procedure should be done after adjusting the side to side registration for each paper tray station wy Turn clockwise Turn counterclockwise gt gt gt gt gt A230R207 WMF A231R515 WMF 1 Check the trimming area pattern image SP2 902 3 No 10 whether a parallelogram image appears or not as shown If it appears do the following Remove the laser unit A see Replacement and Adjustment Laser Unit 5 es on os ay og Remove the bracket 2 screws Install the adjusting cam P N 2309003 Secure the adjustment bracket D using the two screws which were used for the bracket B However do not tighten the screws at this time Qu cee 6 Adjusts the laser unit position by turning the adjusting cam Refer to the above illustration for the relationship between the image and the cam rotation direction Tighten the adjustment bracket Pri
208. nt the trimming area pattern to check the image If it is still the same repeat steps 6 to 8 6 53 COPY ADJUSTMENTS PRINTING SCANNING 26 March 1998 6 11 2 SCANNING NOTE 1 Perform or check the printing registration side to side adjustment and the blank margin adjustment before doing the following scanner adjustments 2 Use an OS A3 test chart to perform the following adjustments Registration Platen Mode 1 Place the test chart on the exposure glass and make a copy from one of the feed stations 2 Check the leading edge and side to side registration and adjust them using the following SP modes if necessary SP mode Leading Edge SP4 010 Side to side SP4 011 T A Leading Edge Registration B Side to side Registration A231R508 WMF Magnification NOTE Use test chart to perform the following adjustment Sub Scan Magnification NM A A Main Scan Magnification A231R510 WMF 1 Place the test chart on the exposure glass and make a copy from one of the feed stations 2 Check the magnification ratio and adjust it using the following SP mode if necessary The specification is 1 SP mode Sub Scan Magnification SP4 008 6 54 26 March 1998 COPY ADJUSTMENTS PRINTING SCANNING Scanner Skew Image Adjustment Do the following procedure if skew is caused by the scanner not the printer while adjusting the scanner registration and magnification NOTE 1 In machines wit
209. ntrast between light and dark areas of a halftone image Each pixel is corrected using the difference between it and the surrounding pixels The corrected pixels are then compared with an error diffusion matrix Separate error diffusion matrixes are used for copy mode and fax mode 1 Grayscale processing mode The output image signal level has 9 levels from white to black There is only one matrix available 2 Binary picture processing mode The output image signal level has just 2 levels white and black 2 16 26 March 1998 IMAGE PROCESSING Dithering This is only used in photo mode Each pixel is compared with a pixel in a dither matrix Several matrixes are available to increase or decrease the detail on the copy 1 Grayscale processing mode The matrix type can be selected with SP4 904 2 a 2 oo an e 2 Binary picture processing The matrix type can be selected with SP4 904 18 Line width correction This function is effective only in copied original mode Usually lines will bulge in the main scan direction as a result of the negative positive development system that is used in this model So pixels on edges between black and white areas are compared with adjacent pixels and if the pixel is on a line the line thickness will be reduced The line width correction is done in the IPU chip The line width correction type can be selected with SP4 904 6 2 17 IMAGE PROCESSING 26
210. oes not detect an on condition when the LD unit moves to its home position Possible causes e LD unit home position sensor defective e LD positioning motor defective e LD unit movement blocked because of incorrect connector routing 7 4 26 March 1998 SERVICE CALL CONDITIONS 328 LD unit home position error 2 Definition B The LD unit home position sensor does not detect an off condition when the LD unit moves from its home position Possible causes e LD unit home position sensor defective e LD positioning motor defective e LD unit movement blocked because of incorrect connector routing SC329 Laser beam pitch adjustment error Definition B The LD unit home position sensor does not detect an on condition while changing the LD unit position for correcting the LD position or changing the dpi Possible causes e The laser beam pitch adjustment SP2 109 3 and 4 was not done after replacing the NVRAM or doing an NVRAM clear e The laser beam pitch adjustment SP2 109 1 4 was not done after replacing the LD unit e LD unit movement blocked because of incorrect connector routing SC350 1 ID sensor error 1 Definition B One of the following ID sensor output voltages was detected twice consecutively when checking the ID sensor pattern 1 Vsp 2 2 5V 2 Vsg 2 5V 3 Vsp OV 4 Vsg OV Possible causes e ID sensor defective e ID sensor connector defective Poor ID sensor connector connectio
211. oller gear 2 35 DEVELOPMENT 26 March 1998 2 6 3 DEVELOPER MIXING A230D403 WMF This mechanism supplies toner from the toner bottle to the development roller The dual mixing roller consists of the outer paddle A and the inner auger B The outer paddle moves developer to the front and supplies it to the development roller The developer that is spilt off by the doctor blade goes through the holes C in the outer paddle and is transported towards the rear by the inner auger While the dual mixing roller is moving the developer some developer also goes back to the development unit through the holes in the bottom of the paddle roller New toner from the toner bottle and recycled toner from the toner collection coil both enter the development unit at the top D 26 March 1998 DEVELOPMENT 2 6 4 DEVELOPMENT BIAS E a B C A230D404 WMF This machine uses a negative positive development system in which black areas of the latent image are at a low negative charge about 150 V and white areas are at a high negative charge about 950 V To attract negatively charged toner to the black areas of the latent image on the drum the high voltage supply board A applies a bias of 600 volts to the development roller throughout the image development process The bias is applied to the development roller shaft B through the bias terminal spring C and bias terminal D The development bias
212. ollowing procedures 3 Set SP 2 902 3 to 0 again after completing these printing adjustments Registration Leading Edge Side to Side 1 Check the leading edge registration and adjust it using SP1 001 The specification is 3 2mm 2 Check the side to side registration for each paper feed station and adjust them using the following SP modes SP mode Specification B 1st paper feed SP1 002 1 2nd paper feed SP1 002 2 A 3rd paper feed SP1 002 3 Optional PFU tray 1 4th paper feed Optional PFU tray 2 109 mm Duplex SP1 002 5 By pass feed SP1 002 6 LCT SP1 002 7 A231R506 WMF A Leading Edge Registration B Side to side Registration COPY ADJUSTMENTS PRINTING SCANNING 26 March 1998 Blank Margin NOTE If the leading edge side to side registration can not be adjusted within the specifications adjust the leading left side edge blank margin 1 Check the trailing edge and right side edge blank margins and adjust them using the following SP modes D SP mode Specification Trailing edge SP2 101 2 C Trailing edge duplex SP2 101 5 2 side Left edge duplex SP2 101 6 2 1 5mm 27 side B Right edge duplex SP2 101 7 2 2 5 1 5 mm A231r507 wmf copy 2 side A Trailing Edge Blank Margin B Right Edge Blank Margin C Leading Edge Blank Margin D Left Edge Blank Margin Main Scan Magnification 1 Pri
213. ollowing table shows which SP modes are used for each image processing mode Binary picture processing mode Copy mode Input Background Filtering Magnifi ID Gradation correct erase cation control Letter SP4903 34 SP4903 SP2909 1 SP4904 Background 41 44 Main scan 12 erase level MTF filter mag Threshold SP4903 29 coefficient level Independent SP4903 dot erase 50 53 level MTF filter strength Letter Photo SP4903 35 SP4903 47 SP2909 1 Background MTF filter Main scan erase level coefficient mag SP4903 30 SP4903 55 Independent MTF filter dot erase strength level Photo qe SP4903 36 SP4904 3 SP2909 1 4904 Background Filter type Main scan 18 erase level smoothing mag Dither or MTF matrix SP4903 16 type Smoothing filter coefficient SP4903 15 MTF filter coefficient SP4903 24 MTF filter strength 2 10 26 March 1998 IMAGE PROCESSING Grayscale processing Copy Input Background Filtering Magnifi ID Gradation mode correct erase cation cont Letter SP4903 34 SP4903 SP2909 1 SP4903 38 Background 11 14 Main scan Error erase level MTF filter mag diffusion SP4903 28 coefficient on off Independent SP4903 dot erase 20 23 level MTF filter strength Letter SP4903 35 SP4903 17 SP2909 1 SP4907 Photo Background MTF filter Main scan Text photo erase level coefficient mag auto SP4903 30 SP4903 25 separation Independ
214. om plate starts to drop If it does not deactivate within 5 s four times consecutively this SC will be generated Possible causes e 3rd tray upper limit sensor defective e Tray lift motor defective e Too much paper in the tray 7 12 26 March 1998 SERVICE CALL CONDITIONS SC504 1 Ath tray lift malfunction 1 optional paper tray unit Definition C The paper upper limit sensor is not activated after the tray lift motor has been on for 13 seconds Possible causes e 4th tray upper limit sensor defective Tray lift motor defective Poor tray lift motor connection C504 2 4th tray lift malfunction 2 optional paper tray unit Definition C If the main power switch is turned on when the paper is already at the feed height the paper height position is detected again At this time the paper upper limit sensor should de activate within 5 seconds after the paper bottom plate starts to drop If it does not deactivate within 5 s four times consecutively this SC will be generated Possible causes e 4th tray upper limit sensor defective Tray lift motor defective Too much paper in the tray SC506 Paper tray unit main motor lock optional paper tray Definition C A main motor lock signal is detected for more than 0 5 s during rotation Possible causes e Paper tray unit main motor defective e Too much load on the drive mechanism e Poor motor connector connection og ase 22 C5
215. option is installed Fax options All options for the fax unit are available when the fax unit has been installed 1 8 26 March 1998 MECHANICAL COMPONENT LAYOUT 1 4 MECHANICAL COMPONENT LAYOUT o 31 11 12 13 14 30 29 15 16 28 17 27 18 19 20 A231V503 WMF 26 25 24 23 22 21 MECHANICAL COMPONENT LAYOUT Exposure Glass 2nd Mirror Original Width Sensors 1st Mirror Exposure Lamp Original Length Sensors Lens SBU Scanner Motor ss DA SOIT uie m 10 Paper Exit Sensor 11 Exit Junction Gate 12 Hot Roller 13 Pressure Roller 14 Transfer Belt Cleaning Blade 15 OPC Drum 16 Transfer Belt 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 26 March 1998 Registration Roller Upper Relay Rollers Feed Roller Separation Roller Pick up Roller Bottom Plate Development Unit Charge Roller Mirror Barrel Toroidal Lens BTL Polygonal Mirror Motor Laser Unit Toner Supply Bottle Holder Exit Roller 3rd Mirror 26 March 1998 PAPER PATH 1 5 PAPER PATH o M c Optional 1 bin Tray Optional ARDF Optional Bridge Unit Optional Leen id aus Unit p Optional Duplex Unit Optional By pass Feed Unit 1000 sheet Finisher A230v102 wmf O
216. or 4 44 26 March 1998 SERVICE PROGRAM MODE Mode No Class 3 Function Settings 32 Total Copy Jam by Displays the total number of copy Location jams by location Mail Box Relay These are jams when the paper does Sensor not activate the sensor Total Copy Jam by Location Mail Box Mailbox Section Total Copy Jam by Location LCT Total Copy Jam by Displays the total number of copy Location jams by location Upper Relay These are jams when the paper Sensor stays at the sensor Total Copy Jam by Location Lower Relay Sensor Total Copy Jam by Location Upper Relay Sensor Op PTU Total Copy Jam by Location Lower Relay Sensor Op PTU Total Copy Jam by Location Regist Sensor Total Copy Jam by Location Exit Sensor Total Copy Jam by Location Bridge Exit Sensor Total Copy Jam by Location Bridge Relay Sensor Total Copy Jam by Location Duplex Entrance Sensor Total Copy Jam by Location Duplex Exit Sensor 4 45 SERVICE PROGRAM MODE Mode No Class 3 Function 26 March 1998 Settings 74 Total Copy Jam by Location 1 bin Tray Entrance Sensor Displays the total number of copy jams by location These are jams when the paper stays at the sensor Total Original Jam by Location At Power On
217. over detects whether the right upper cover is open or closed SW3 51 Main Power Supplies power to the copier If this is off Switch there is no power supplied to the copier ELECTRICAL COMPONENT DESCRIPTIONS 26 March 1998 Symbol pon Description Note SWA 52 Front Cover Cuts the 5VLD and 24V dc power line and Safety detects whether the front cover is open or not SW5 10 Operation Switch Provides power for machine operation The machine still has power if this switch is off Magnetic Clutches CL1 39 Transfer Belt Controls the touch and release movement of the transfer belt unit CL2 40 Registration Drives the registration rollers CL3 44 Relay Drives the relay rollers CL4 41 Upper Paper Starts paper feed from the upper paper tray Feed CL5 42 Lower Paper Starts paper feed from the lower paper tray Feed Lamps L1 13 Exposure Applies high intensity light to the original for exposure L2 16 Fusing Provides heat to the hot roller L3 Quenching Neutralizes any charge remaining on the drum surface after cleaning Heaters H1 Optics Anti condensation option Turns on when the main power switch is off to prevent moisture from forming on the optics H2 Tray option Turns on when the main power switch is off to keep paper dry in the paper tray Thermistors TH1 14 Fusing Monitors the temperature at the central area of the hot roller
218. p a reflector E and the 1st mirror F The exposure lamp is energized by a dc supply to avoid uneven light intensity while the 1st scanner moves in the sub scan direction down the page The entire exposure lamp surface is frosted to ensure even exposure in the main scan direction across the page The light reflected by the reflector is of almost equal intensity in all directions to reduce shadows on pasted originals An optics anti condensation heater G is available as an option It can be installed on the left side of the scanner It turns on whenever the power cord is plugged in SCANNING 26 March 1998 2 1 2 SCANNER DRIVE G F A230D102 WMF The scanner drive motor is a stepper motor The 1st and 2nd scanners A B are driven by the scanner drive motor C through the timing belt D scanner drive pulley E scanner drive shaft F and two scanner wires G The scanner interface board SIB controls the scanner drive motor In full size mode the 1st scanner speed is 180 mm s NAD30S NAD30 or 230 mm s NAD40 during scanning The 2nd scanner speed is half that of the 1st scanner In reduction or enlargement mode the scanning speed depends on the magnification ratio The returning speed is always the same whether in full size or magnification mode The image length change in the sub scan direction is done by changing the scanner drive motor speed and in the main scan direction it is done by image proce
219. page 2 screws Remove the tension spring B 12 13 14 Loosen the screw securing the wire tension bracket 0 Remove the scanner wire E Wind the new scanner wire around the scanner drive pulley in the correct direction as shown Wind the end of the new wire with the ball as shown Wind the end of the new wire with the ring as shown and Install the tension spring on the wire tension bracket Wind the new scanner wire for the other side as well 6 10 26 March 1998 SCANNER UNIT 19 20 21 22 23 24 25 D A230R113 WMF Reinstall the front scanner rail and rear scanner rail Install the 1st scanner and adjust its position with the scanner positioning tools P N 0069104 Secure the 1st scanner with the scanner wire bracket 1 screw 5 D on os og Tighten the tension bracket Secure the scanner wire pulley D 1 Allen screw Remove the positioning tools After sliding the scanner to the right and left several times set the positioning tools to check the scanner wire bracket and tension bracket again Reassemble the scanner and do the scanner and printer copy adjustments see Replacement and Adjustment Copy Adjustments 6 11 SCANNER UNIT 26 March 1998 6 1 10 SCANNER UNIT POSITIONING ADJUSTMENT NOTE The scanner unit position can be changed so that it is easier to check whether the
220. pler HP Sensor Stapler Rotation HP Sensor Punch HP Sensor Hopper Sensor Punch Motor 1 cnio1 1 Ow DAV A 24 ONT10 1__CN210 7 5 3 y 24 24V Upper Transport Motor A W24 0 24 o REDE TE ort 0 GND1 Upper Transport Motor W24 0 24 Jo eue M 6 0 GND1 Upper Transport Motor W24 gt 0 24 2 Upper Transport Motor W24 0 24 Jo ee ha CN102 2 a 3 RXD 2 j fe i Ole avari m tto 24V B 24 9 20 OTXD 4 4 Lower Lower Transport Motor W24 0 24 o O Transport Lower Transport Motor W24 0 24 O 2 M DE T SW1 CN103 1 4 24 24V Lower Transport Motor B W24 0 24 0 zo cedar POER ict E ison EDEN A24 Front Door Safety Switch Lower Transport Motor W24 0 24 Jo oO beg CN254 1 CN104 6 1 0 GND2 gt r 3 Shift Tray Lift Motor W24 o CNi 22 O a Shift Tray Lift Motor 724 1 2 5 yd V5 Entrance Sensor EE edi Motor 4 E 2 4 CN204 1 CN104 3 1 24V 24 ee Tray Junction S2 E V5 Stapler Tray Entrance Sensor Tray Junction Gate Sol W24 9 ate Solenoid 3 1 Sio GND2 F CN205 1 CN105 3 24V A 24 CN2IS
221. ptional Paper Tray Optional LCT Unit ELECTRICAL COMPONENT DESCRIPTIONS 26 March 1998 1 6 ELECTRICAL COMPONENT DESCRIPTIONS Refer to the electrical component layout and the point to point diagram on the waterproof paper in the pocket for the locations of these components Symbol Index No Description Note Printed Circuit Boards PCB1 58 BICU Base Controls all copier functions both directly and Engine amp Image through other control boards Control Unit PCB2 55 PSU Power Provides dc power to the system and ac Supply Unit power to the fusing lamp and optional heaters PCB3 61 Input Output Controls the mechanical parts of the printer Board excluding the paper feed section and the fusing lamp power PCB4 62 Paper Feed Controls the mechanical parts of all paper Control PFB feed sections PCB5 63 High Voltage Supplies high voltage to the drum charge Supply roller development roller and transfer belt PCB6 9 SBU Sensor Contains the CCD and outputs a video signal Board Unit to the BICU board PCB7 7 SIB Scanner Controls the scanner carriages and passes Interface Board signals from the scanner unit to the BICU board PCB8 11 Operation Panel Controls the LCD and LED matrix and Lamp Stabilizer monitors the key matrix Provides dc power to the exposure lamp LDDR Laser Diode Driver Controls the laser diode SIFB Scanner Interface Board Passes
222. py Adjustments 6 3 SCANNER UNIT 26 March 1998 6 1 4 ORIGINAL SIZE SENSORS A231R502 WMF Remove the exposure glass See Exposure Glass Remove the original size sensor A 1 screw 1 connector Remove the lens block See Lens Block SBU Assembly Remove the original size sensors B 1 screw 1 connector each 6 4 26 March 1998 SCANNER UNIT 6 1 5 EXPOSURE LAMP qu A230R104 WMF Remove the exposure glass See Exposure Glass Remove the operation panel A 4 screws 1 connector Slide the 1st scanner B to the cutout C in the rear scanner frame Remove the exposure lamp D 1 screw 1 connector NOTE Do not touch the glass surface of the exposure lamp with fingers 6 5 c o 5 lt SCANNER UNIT 26 March 1998 6 1 6 SCANNER SENSOR PLATEN COVER SENSOR A230R107 WMF Remove the scanner rear cover See Scanner Exterior Remove the scanner H P sensor bracket A 1 screw Remove the scanner H P sensor B 1 connector Remove the platen cover sensor C 1 screw 1 connector 6 6 26 March 1998 SCANNER UNIT 6 1 7 SCANNER MOTOR A230R106 WMF 1 Remove the scanner rear cover See Scanner Exterior 2 Remove the bracket A 4 screws 3 Remove the scanner motor bracket 3 screws 1 connector 1 spring 1 timing belt 5
223. r is closed The high voltage supply board adjusts the current to the roller to keep a small but constant current flow to ground through the belt paper and drum If this current is not kept constant efficiency of toner transfer and paper separation will vary with paper thickness type environmental condition or changes in transfer belt surface resistance 2 61 IMAGE TRANSFER AND PAPER SEPARATION 26 March 1998 Correction for paper width and thickness SP2 309 1 SP2 309 2 0 Default 150 mm Default 216 mm 297 mm Paper Tra gt 4 gt 4 gt SP2 309 3 SP2 309 4 Current x 1 2 Current x 1 2 Current x 1 0 By pass Tray gt 4 gt 4 gt SP2 309 5 SP2 309 6 Current x 1 5 Current x 1 5 Current x 1 0 A231D541 WMF To counteract the effects of paper width and thickness a range of SP modes are available For paper width there are two thresholds The factory settings are 150 and 216 mm Below 216 mm the transfer current can be increased by default it is multiplied by 1 2 for the main body paper trays Below 150 mm the transfer current can be set even higher although by default it is kept the same as the current for below 216 mm The higher current allows for the fact that current prefers to go to the drum from the belt directly and not through the paper which leads to insufficient toner transfer for narrow paper widths For thickness it is assumed that the user wil
224. rate the paper from the drum and to carry the paper upwards The pick off pawl ensures that the paper separates from the drum The transfer belt cleaning blade removes toner from the transfer belt to prevent the back side of the paper from being stained 2 57 IMAGE TRANSFER AND PAPER SEPARATION 26 March 1998 2 9 2 BELT DRIVE MECHANISM B A231D509 WMF The main motor A drives the transfer belt B through a train of gears the belt contact clutch C and the drive roller gear D 2 9 3 IMAGE TRANSFER AND PAPER SEPARATION MECHANISM The image is transferred from the drum in the following steps 1 The registration clutch turns on to feed the paper A at the correct time to synchronize the leading edge of the developed latent LEED image on the drum B with the leading edge of the paper The transfer belt C is away from the drum at this time AS 26 March 1998 IMAGE TRANSFER AND PAPER SEPARATION 2 The transfer belt contact clutch turns ona certain time after the main motor started Then the transfer belt moves into contact with the drum o Descriptions 3 When the paper enters the gap between the belt and the drum the high voltage supply board A applies a high positive current to the belt to transfer the image to the paper I1 It 12 A A231D521 WMF 4 After receiving the image from the drum the paper is fed by the belt 5 Th
225. re is paper on the optional one bin tray A231R520 WMF 1 Remove the scanner unit NOTE If the ARDF is installed remove the ARDF before removing the scanner unit 1 Remove the stand rear cover A 2 screws 2 Disconnect the scanner I F board B and the power connector C 3 Disconnect the scanner harness D 4 Remove the scanner unit E 2 knob screws NOTE 1 Hold the scanner unit as shown in the above illustration Otherwise it may be damaged 2 Make sure the harnesses are not damaged by the edges of opening 3 After removing the scanner keep it in a flat level place 5 Remove four plates G 1 screw each 6 Remove the scanner unit plate H 1 screw 6 12 26 March 1998 SCANNER UNIT A A A231R521 WMF 2 Change the scanner unit plate to the appropriate position Without the optional one bin tray Either setting can be used With the optional one bin tray Use the rear setting 3 Reinstall four plates A 1 screw each 4 Secure the scanner unit plate B 1 screw 5 Reinstall the scanner unit 2 knob screws 5 Er on Cs ay og 6 13 LASER UNIT 26 March 1998 6 2 LASER UNIT Z WARNING Turn off the main power switch and unplug the machine before attempting any of the procedures in this section Laser beams can seriously damage your eyes 6 2 1 CAUTION DECAL LOCATIONS Two caution decals are located in th
226. rge roller cleaning pad from side to side This movement helps to disperse spots of accumulated toner to prevent early blade edge wear at any particular location To remove the toner and other particles that are accumulated at the edge of the cleaning blade the drum turns in reverse for about 5 mm at the end of every copy job DRUM CLEANING AND TONER RECYCLING 26 March 1998 2 7 2 TONER RECYCLING A230D452 WMF Toner which is transferred to the toner collection coil A is transported to the opening B in the bottom of the PCU Then this toner falls into the development unit with new toner coming from the toner bottle and it is all mixed together by the paddle roller C 26 March 1998 PAPER FEED 2 8 PAPER FEED 2 8 1 OVERVIEW Detailed Descriptions There are two paper trays each of which can hold 500 sheets The paper tray feed stations use an FRR system There are two relay sensors one just above each set of relay rollers These sensors are used for paper jam detection The components of the paper feed section are as follows There are no paper size sensors The user inputs the paper size with a UP mode 1 Upper Tray Set Sensor 8 Lower Relay Sensor 2 Upper Pick up Roller 9 Lower Relay Roller 3 Upper Paper Height Sensor 10 Lower Paper Feed Roller 4 Upper Paper Feed Roller 11 Lower Separation Roller 5 Upper Rela
227. ric keys 3 Hold down the Clear Stop key for more than 3 seconds 4 Select 1 copier NOTE Do not enter SP mode during the fusing warm up period the LED of the start key is red during this period Perform the TD sensor initial setting as follows 1 Enter 2 801 and press the Enter key 2 Press 1 to start the TD sensor initial setting NOTE The machine will automatically stop when TD sensor initial setting is completed and the TD sensor output voltage will appear on the LCD Perform the process control initial setting using SP2 805 Europe Select the correct language using SP 5 009 pa L 3 10 26 March 1998 26 March 1998 COPIER INSTALLATION 5 D ES A2311500 WMF 27 When loading paper bigger than A4 11 x 8 5 in the 1st paper tray attach the pad A and the cushion B to the paper tray as shown NOTE 1 This procedure is required only for the 1st paper tray 2 Make sure that the pad is not attached over the ribs C 28 Change the side fences and end fence to match the paper size that will be used Then pull the paper tray out and load paper into it E 29 Enter the proper paper size for each paper tray using UP mode 30 Attach the appropriate paper size decal D to the paper tray NOTE Paper size decals are also used for the optional paper tray unit Keep any remaining decals for use with the paper tray unit
228. ring the stand by 1 s step condition 10s If set at 0 the polygon motor never turns off during stand by However when the machine goes into energy saver mode the polygon motor turns off regardless of this timer 2 201 1 Development Bias Adjusts the development bias for 200 700 Adjustment for copying 10 V step copying 600 V This can be adjusted as a temporary measure if faint copies appear due to an aging drum 2 Development Bias Adjusts the development bias for 200 700 Adjustment for ID making the ID sensor pattern for Vsp 1 V step sensor pattern This should not be used in the field 380 V because it affects ID sensor pattern density which affects toner supply 2 207 Forced Toner Forces the toner bottle to supply 1 Start Supply toner to the toner supply unit for 30 seconds Press 1 to start Toner supply finishes automatically after 30 seconds This process is not normally needed in the field for this model 2 208 1 Toner Supply Selects the toner supply mode 0 Sensor Mode 1 Image Pixel Use image pixel count mode only Count a temporary measure if the or TD sensor is defective 2 209 1 Toner Supply Rate Adjusts the toner supply rate 10 800 Increasing this value reduces the 5 mg s step toner supply clutch on time Use a 30 mg s lower value if the user tends to make lots of copies that have a high proportion of black 4 12 26 March 1998 SERVICE PROGRAM
229. rnesses are not damaged by the edges of the opening F 3 After removing the scanner keep it in a flat level place 5 Remove four plates G 1 screw each 6 Remove the scanner unit plate H 1 screw 3 23 1 BIN TRAY UNIT INSTALLATION 26 March 1998 A2311505 WMF B A2301491 WMF 2 Unpack the 1 bin tray unit and remove the tapes 3 Remove the paper exit cover A 4 screws Do step 4 only if the duplex unit has been installed or will be installed 4 Cut away two covers B from the base cover C NOTE Trim off any remaining unevenness from the edges 5 Install the base cover 3 stepped screws 6 Place the 1 bin tray unit D on the base cover NOTE Make sure to hold the 1 bin tray unit at both sides but never at the center 3 24 26 March 1998 1 BIN TRAY UNIT INSTALLATION Installation A2301492 WMF A2301493 WMF 7 Secure the 1 bin tray unit 1 screw A M3 x 10 8 Remove the cover B 9 Install the grounding bracket C 2 screws M3 x 6 10 Connect the harness D 11 Install the connector cover E 1 screw M3 x 8 12 Install the copy tray When the Bridge Unit A688 has not been installed 1 Attach the decal F as shown 2 Install two stepped screws G then attach the copy tray H 1 BIN TRAY UNIT INSTALLATION 26 March 1998 View from bottom When the Bridge Unit A688 has been installed 1 Open the right cover of the bridge
230. rum 2 Remove the pick off pawl assembly A 3 Remove the pick off pawl B 1 spring 1 spur vcio 5 Er on Cs og Pick off pawl position adjustment If a line has appeared on the drum surface because of the pick off pawl the pick off pawl position can be adjusted using either or both of the following Changing the spur position Changing the pick off pawl assembly position 6 21 PHOTOCONDUCTOR UNIT PCU 26 March 1998 6 3 4 CHARGE ROLLER CHARGE ROLLER CLEANING PAD C B D A230R306 WMF 1 Remove the drum See Drum 2 Remove two snap rings A and slide out the front charge roller holder B 3 Remove the charge roller C NOTE Do not touch the charge roller with bare hands 4 Remove the charge roller cleaning pad D 4 hooks 5 After replacing the charge roller check the value of SP2 001 1 If it is not at the standard value change it to the standard value using SP2 001 1 NOTE If this is not done the carrier will be attracted to the drum because the charge roller voltage will be too high Standard value 1630V NAD30 30S 1650V NAD40 26 March 1998 PHOTOCONDUCTOR UNIT PCU 6 3 5 DRUM CLEANING BLADE A230R307 WMF Remove the drum See Drum Remove the charge roller See Charge Roller Remove the drum cleaning blade A 2 screws 6 3 6 ID SENSOR 5 Er on Cs og A230R931 WMF B Remove t
231. s effective only for the main machine not for the options 2 When installing the printer option change the setting to ON 4 5 2 TEST POINTS Board Number Monitored Signal TP103 Ground TP104 24V TP136 5V TP154 Ground TP156 12V TP158 12V TP159 5VE BICU Number Monitored Signal TP103 GND TP145 F gate signal 4 67 SPECIAL TOOLS AND LUBRICANTS 26 March 1998 4 5 3 LEDS BICU Number Monitored Signal LED101 Monitors whether the program is working normally or not The LED blinks in normal conditions LED102 Monitors 5VE During the energy saver mode this LED will blink 4 6 SPECIAL TOOLS AND LUBRICANTS 4 6 1 SPECIAL TOOLS Part Number Description A2309003 Adjustment Cam Laser Unit A2309004 Positioning Pin Laser Unit A2309352 Flash Memory 4MB A2309351 Case Flash Memory Card A0069104 Scanner Positioning Pin 4 pcs set 54209516 Test Chart OS A3 10 pcs Set A0299387 Digital Multimeter FLUKE 87 A2309099 NVRAM Minus Counter 4 6 2 LUBRICANTS Part Number Description A0289300 Grease Barrierta JFE 5 5 2 52039501 Silicone Grease G 501 4 68 uus 26 March 1998 5 1 PM TABLE NOTE The amounts mentioned as the PM interval indicate the number of prints PM TABLE Symbol key C Clean R Replace L Lubricate Inspect 5 PREVENTIVE MAINTENANCE SCHEDULE
232. s scanned the density of the gray area is the peak white level density Therefore the original background will not appear on copies Because peak level data is taken for each scan line ADS corrects for any changes in background density down the page As with previous digital copiers the user can select manual image density when selecting auto image density mode and the machine will use both settings when processing the original 2 7 IMAGE PROCESSING 26 March 1998 2 2 4 IPU IMAGE PROCESSING UNIT Overview gt Printer Controller A231D520 WMF The image data from the SBU goes to the IPU Image Processing Unit IC on the BICU board which carries out the following processes on the image data Auto shading Filtering MTF and smoothing Magnification Yy correction 1 2 3 4 5 Grayscale processing 6 Binary picture processing 7 Error diffusion 8 Dithering 9 Video path control 1 0 Test pattern generation The image data then goes to either the LDDR or the memory control IC GA 1 depending on the selected copy modes 2 8 26 March 1998 Image processing path IMAGE PROCESSING Image or Scannin Printin 5 0 Copy Mode Input Background Filtering Magnifi
233. s the paper exit rollers through a gear and a timing belt B The fusing unit drive release mechanism automatically disengages the fusing unit drive gear C when the right cover D is opened This allows the fusing unit drive gear to rotate freely so that misfed paper can be easily removed When the right cover is opened the actuator plate E pulls release wire F The wire pulls the fusing drive gear bracket G and the fusing unit drive is disengaged IMAGE FUSING AND PAPER EXIT 26 March 1998 2 10 3 FUSING ENTRANCE GUIDE SHIFT MECHANISM A230R608 WMF A The entrance guide A for this machine has two holes on each side to adjust for paper thickness to prevent creasing Normally the right screw hole B on each side is used For thin paper move the entrance guide to the right by securing it with screw holes C This slightly lengthens the paper path which prevents the paper from creasing in the fusing unit For thick paper move the entrance guide to the left use screw holes B This setting allows more direct access to the gap between the hot and pressure rollers This prevents thick paper from buckling against the hot roller which can cause blurring at the leading edge of the copy Also thick paper does not bend as easily and is therefore less prone to creasing 26 March 1998 IMAGE FUSING AND PAPER EXIT 2 10 4 PRESSURE ROLLER a 2 oo an e A230D603 WMF Th
234. sed developer in accordance with local regulations 6 Never load different types of developer and toner into the development unit Doing so will cause poor copy quality and toner scattering 7 Immediately after installing new developer the TD sensor initial setting procedure should be performed to avoid damage to the copier Do not perform the TD sensor initial setting with used developer Do not make any copies before doing the TD sensor initial setting 8 When using a vacuum cleaner to clean the development unit casing always ground the casing with your fingers to avoid damaging the toner density sensor with static electricity 9 After replacing the TD sensor do the TD sensor initial setting procedure SP 2 801 4 1 7 FUSING UNIT 1 After installing the fusing thermistor make sure that it is in contact with the hot roller and that it is movable 2 Be careful not to damage the edges of the hot roller strippers or pressure roller strippers or their tension springs 3 Do not touch the fusing lamp and rollers with bare hands Make sure that the fusing lamp is positioned correctly and that it does not touch the inner surface of the hot roller 4 3 GENERAL CAUTIONS 26 March 1998 4 1 8 PAPER FEED 1 Do not touch the surface of the pick up feed and separation rollers 2 The side fences and end fence of the paper tray must be positioned correctly to align with the actual paper size to avoid paper misfeeds 4 1
235. signals between the SIFB and BICU boards Motors M1 Main Drives the main body components M2 Scanner Drive Drives the 1st and 2nd scanners M3 Tray Lift Raises the bottom plate in the paper tray M4 Polygonal Mirror Turns the polygonal mirror M5 LD Positioning Rotates the LD unit to adjust the LD beam pitch when a different resolution is selected M6 Cooling Fan Removes heat from the main PCBs M7 Exhaust Fan Removes heat from around the fusing unit M8 Toner Supply Rotates the toner bottle to supply toner to the development unit 9 PSU Cooling Fan Removes heat from the PSU 26 March 1998 ELECTRICAL COMPONENT DESCRIPTIONS 2 M c Symbol Description Note Sensors 51 2 Scanner Home Informs the CPU when the 1st and 2nd Position scanners are at the home position 52 3 Platen Cover Informs the CPU whether the platen cover is up or down related to APS ARE functions ARE Auto Reduce and Enlarge 53 12 Original Width Detects the width of the original This is one of the APS Auto Paper Select sensors 54 5 Original Length 1 Detects the length of the original This is one of the APS Auto Paper Select sensors 55 6 Original Length 2 Detects the length of the original This is one of the APS Auto Paper Select sensors S6 21 LD Un
236. sing the memory are not sent from the IPU Possible causes e Software defective 5 959 Printer setting ID error Definition B The ID that is required for image processing using the printer is not sent from the IPU Possible causes e Software defective og Qs 30 22 SERVICE CALL CONDITIONS 26 March 1998 SC960 Printer return ID error Definition B The ID that is sent from the printer controller after finishing the printout is incorrect Possible causes e Software defective 5 961 Printer ready ID error Definition B The ID that is sent from the printer controller in the printer controller printing ready condition is incorrect Possible causes e Software defective SC962 Memory setting ID error Definition B The ID that is sent from the memory when the IPU sent the memory ready signal is incorrect Possible causes e Software defective SC963 Memory finishing ID error Definition B The ID that is sent from the memory when the IPU sent the memory finish signal is incorrect Possible causes e Software defective 5 964 Printer ready error Definition B The print ready signal is not generated for more than 17 seconds after the IPU received the print start signal Possible causes e Software defective 26 March 1998 SERVICE CALL CONDITIONS SC980 HDD access error Definition B Incorrect parameter sent from the BICU to the
237. sor connector connection O board defective e High voltage supply board defective e Dirty ID sensor Defect at the ID sensor pattern writing area of the drum 7 6 26 March 1998 SERVICE CALL CONDITIONS 350 5 ID sensor error 5 Definition B Vsg falls out of the adjustment target 4 0 0 2V during Vsg checking Possible causes ID sensor defective e 0 sensor connector defective e Poor ID sensor connector connection O board defective e High voltage supply board defective e Dirty ID sensor e Defect at the ID sensor pattern writing area of the drum SC360 Hard disk drive error 1 Definition B The machine does not detect the connection signal from the HDD Possible causes e Poor connection between the HDD and HDD controller board e The ac power connector to the HDD is disconnected e HDD defective e HDD controller board defective e BICU defective SC361 Hard disk drive error 2 Definition B The image data stored in the HDD cannot be output properly Possible causes When this SC occurs only once this problem will be solved after turning the main power switch off and on e When this SC occurs while performing SP4 911 1 HDD media check it can be cured by doing SP4 911 2 HDD formatting HDD defective og as 30 22 7 7 SERVICE CALL CONDITIONS 26 March 1998 SC362 IMAC image compression IC error Definition B An error occurs during image proce
238. splay Scanner Controller ROM Version Display ANITA Japanese version only PM Counter Display Displays the PM counter since the last PM PM Counter Reset Resets the PM counter Press 1 to reset SC Jam Counter Reset Resets the SC and jam counters Press 1 to reset Resets Counters except for the total counter esets the following counters Press 1 to reset e All counters of SP7 003 e All counters of SP7 006 e All counters which are listed on the counter list UP1 19 2 Key Operator Code Number Reset Resets the key operator code Press 1 to reset Reset the total Copy Counter by Paper Tray 1st Paper Tray Reset the total Copy Counter by Paper Tray 2nd Paper Tray Reset the total Copy Counter by Paper Tray 8rd Paper Tray Reset the total Copy Counter by Paper Tray 4th Paper Tray Reset the Total Copy Counter by Paper Tray Paper Tray Unit Resets the total copy counter by paper tray Press 1 to reset Use these SP modes when replacing the pick up feed and separation rollers in the paper feed stations 4 49 SERVICE PROGRAM MODE Mode No Class 3 Function 26 March 1998 Settings 6 Reset the total Copy Counter by Paper Tray By pass Feed Resets the total copy counter by paper tray Press 1 to reset Use these SP modes when replacing t
239. ssible causes e Stapler rotation motor defective e Poor stapler rotation motor connection 729 Finisher punch motor error Definition B The punch H P sensor does not activate within a certain time after the punch motor turned on Possible causes e Punch motor defective Punch sensor defective Poor punch motor connection 730 Finisher stapler position motor error Definition B 1 The stapler does not return to its home position within a certain time after the stapler motor turned on 2 The stapler H P sensor does not activate within a certain time after the stapler motor turned on Possible causes e Stapler motor defective e Stapler H P sensor defective e Poor stapler motor connection 7 20 26 March 1998 SERVICE CALL CONDITIONS SC900 Electrical total counter error Definition A The value of the total counter has already exceeded 9 999 999 Possible causes e NVRAM defective 5 951 F gate signal error 2 Definition B When the IPU has already received the F gate signal the IPU receives another F gate signal Possible causes e BICU defective 5 954 Printer image setting error Definition B The settings that are required for image processing using the printer controller are not sent from the IPU Possible causes e Software defective SC955 Memory setting error Definition B The settings that are required for image processing u
240. ssing in the IMAC which handles image compression and image data transmission Possible causes e BICU defective e HDD controller board defective SC365 Image storage address error Definition B The BICU receives an image data output request signal for data that is not stored in memory Possible causes e BICU defective SC390 1 TD sensor error 1 Definition B The TD sensor output voltage is less than 0 5V or more than 5 0V 10 consecutively during copying Possible causes e TD sensor abnormal e Poor connection between the TD sensor and the I O board IOB e O board IOB defective SC390 2 TD sensor error 2 Definition B The TD sensor output voltage is less than 1 8V or more than 4 8V during TD sensor initial setting Possible causes e TD sensor abnormal No developer in the development unit 7 8 26 March 1998 SERVICE CALL CONDITIONS SC391 Development bias leak Definition B A development bias leak signal is detected Possible causes Poor connection between the development bias terminal and the high voltage supply board e High voltage supply board defective 5 401 1 Transfer roller leak error Definition B A transfer roller current leak signal is detected Possible causes e High voltage supply board defective Poor connection between the transfer current terminal and the high voltage supply board 5 401 2 Transfer roller open error Definition
241. ssing on the BICU board Magnification in the sub scan direction can be adjusted by changing the scanner drive motor speed using SP4 008 2 2 26 March 1998 SCANNING 2 1 3 ORIGINAL SIZE DETECTION IN PLATEN MODE A a 2 oo an e B A230D103 WMF In the optics cavity for original size detection there are five reflective sensors The original width sensors A detect the original width and the original length sensors B detect the original length These are the APS Auto Paper Select sensors Each APS sensor is a reflective photosensor While the power is on these sensors are active and the original size data is always sent to the CPU However the CPU checks the data only when the platen cover sensor C is activated This is when the platen reaches about 15 cm above the exposure glass for example while it is being closed The main CPU can recognize the original size from the on off signals from the APS sensors If the copy is made with the platen fully open the main CPU decides the original size from the sensor outputs when the Start key is pressed 2 3 SCANNING 26 March 1998 1 12 L3 A231D500 WMF LT DLT version display mar 0 sexe TES 6 D 00011111 00011101 00011100 O O aie 00001100 EOLO 00000100 00000011 00000001 00000000 A5 L A5 S 5 5 x8 5 8 5 x5 5 oO 0 oO 0 X I9
242. stment Copy Adjustments for details 4 012 1 Leading Edge Adjusts the leading edge erase 0 0 0 9 Erase Margin margin for scanning 0 1 mm step Scanning 0 5 mm Do not adjust this unless the user wishes to have a scanner margin that is greater than the printer margin 2 Trailing Edge Adjusts the trailing edge erase 0 0 0 9 Erase Margin margin for scanning 0 1 mm step Scanning See the comment for SP 4 012 1 0 5 mm 3 Left Side Erase Adjusts the left side erase margin for 0 0 0 9 Margin scanning 0 1 mm step Scanning See the comment for SP 4 012 1 0 5 mm 4 Right Side Erase Adjusts the right side erase margin 0 0 0 9 Margin for scanning 0 1 mm step Scanning See the comment for SP 4 012 1 0 5 mm 4 013 Scanner Free Run Performs a scanner free run with the exposure lamp off 4 301 APS Sensor Displays the APS sensor output 00000000 Output Check signals when an original is placed on the exposure glass 0 Not Bit 0 Width sensor 1 detected Bit 1 Width sensor 2 1 Detected Bit 2 Length sensor 1 Bit 3 Length sensor 2 Bit 4 Length sensor 3 See Detailed Section Descriptions Original Size Detection in Platen Mode for more details 4 303 APS Small Size Selects whether or not the copier 0 Not Original Detection determines that the original is detected A5 HLT size when the APS sensor 1 A5 length does not detect the size 51 2 x 81 2 If A5 length 51 2 x 81 2 is selected paper sizes that cannot be detecte
243. t applied to the transfer belt during copying at the leading edge of the paper Increase the current to separate the paper from the drum properly in high humidity and high temperature conditions 20 100 1 uA step 45 40 35 30 Transfer Current Adjustment By pass Feed Adjusts the current applied to the transfer belt during copying from the by pass feed table See above If the user normally feeds thicker paper from the bypass tray use a higher setting 20 100 1 uA step 45 40 35 30 Transfer Current Adjustment Leading edge of the paper from by pass Feed Adjusts the current applied to the transfer belt during copying at the leading edge of paper from the by pass feed table Increase the current to separate the paper from the drum properly in high humidity and high temperature conditions 20 100 1 uA step 60 uA 40 45 uA 30 Transfer Current Correction Paper width lower Adjusts the lower paper width threshold for the transfer current correction Use this SP when an image problem e g insufficient toner transfer occurs with a small width paper If the paper width is smaller than this value the transfer current will be multiplied by the factor in SP2 309 3 paper tray or SP2 309 5 bypass Refer to Detailed Section Descriptions Image Transfer for more details 0 297 1 mm step 150 Transfer Current Corre
244. t cable Do not disassemble the lens unit Doing so will throw the lens and the copy image out of focus Do not turn any of the CCD positioning screws Doing so will throw the CCD out of position 4 1 4 LASER UNIT T Do not loosen the screws that secure the LD drive board to the laser diode casing Doing so would throw the LD unit out of adjustment Do not adjust the variable resistors on the LD unit as they are adjusted in the factory The polygon mirror and F theta lenses are very sensitive to dust Do not open the optical housing unit Do not touch the glass surface of the polygon mirror motor unit with bare hands After replacing the LD unit do the laser beam pitch adjustment Otherwise an SC condition will be generated 4 2 26 March 1998 GENERAL CAUTIONS 4 1 5 CHARGE ROLLER 1 Do not touch the charge roller with bare hands Oil stains from fingers may cause uneven image density on copies 2 Clean the charge roller with alcohol and water then with a dry cloth 4 1 6 DEVELOPMENT Be careful not to nick or scratch the development roller 2 Place the development unit on a sheet of paper after removing it from the Copier 3 Never disassemble the development roller assembly The position of the doctor plate is set with special tools and instruments at the factory to ensure the proper gap between the doctor blade and the development roller Clean the drive gears after removing used developer Dispose of u
245. ter then secure the grounding wire F 1 Screw ANTI CONDENSATION HEATER 26 March 1998 A2311521 WMF A2311524 WMF 8 Install two harness clamps A on the stand bracket 9 Connect the connector B to the ac power harness C 10 Move the grounding wire of the connector D as shown 11 Secure the grounding wire E of the connector cable 1 screw 3 64 26 March 1998 TRAY HEATER 3 20 TRAY HEATER Installation A2311528 WMF A2311529 WMF NCAUTION Unplug the machine power cord before starting the following procedure Attach the optional tray heater A to the heater bracket B Install the harness holder C Remove the rear cover Draw out the upper and lower paper trays Install the heater assembly D 1 screw Install four harness clamps E as shown pb Oe SIN Route the harness F and connect it to the ac harness G and heater harness H TRAY HEATER OPTIONAL PAPER TRAY UNIT 26 March 1998 3 21 TRAY HEATER OPTIONAL PAPER TRAY UNIT A6821500 WMF NCAUTION Unplug the machine power cord before starting the following procedure 1 Attach the optional tray heater A to the heater bracket B Install the harness holder C N Remove the rear cover of the machine and the rear cover of the optional paper tray unit Draw out the upper and lower paper trays of the optional paper tray unit Install t
246. the lower grounding plate D Attach two lower grounding plates to the bottom edge of the paper tray unit as shown Cut away a part of the main power switch cover Attach the cushion F to the plate as shown Install the entrance guide plate G 2 screws 3 50 26 March 1998 3 000 SHEET FINISHER INSTALLATION 10 10 11 12 13 14 15 16 H k 5 If the customer requires the punch unit install it now before attaching the finisher to the machine See Punch Unit Installation Open the front door of the finisher A and remove the screw B which secures the locking lever C Then pull the locking lever Align the finisher on the joint brackets and lock it in place by pushing the locking lever Secure the locking lever 1 screw B and close the front door Install the shift tray guide D on the shift tray If the customer does not wish to install it on the shift tray store it at location E NOTE The shift tray guide is required to assist in proper paper stacking However it reduces the capacity of the shift tray by 50 from 3000 to 2950 Install the shift tray F 4 screws Connect the finisher cable G to the main machine Attach the staple position decal H to the ARDF or platen cover as shown Turn on the main power switch and check the finisher operation PUNCH UNIT INSTALLATION 26 March 1998 3 14 PUNCH UNIT INSTALLATI
247. tion B The scanner home position sensor does not detect the off condition during initialization or copying Possible causes Scanner home position sensor defective e Scanner drive motor defective SIB defective e Scanner home position sensor connector defective e Scanner drive motor connector defective 7 2 m ja 26 March 1998 SERVICE CALL CONDITIONS 302 Charge roller current leak Definition B A charge roller current leak signal is detected Possible causes e Charge roller damaged e High voltage supply board defective Poor PCU connection SC 304 Charge roller current correction error Definition B The charge roller bias correction is performed twice even if the maximum charge roller bias 2000V is applied to the roller Possible causes e ID sensor defective 320 Polygon motor error Definition B The polygon motor does not reach its operating speed within 20 seconds after the polygon motor on signal or the lock signal is still activated for more than 20 seconds after the polygon motor off signal Possible causes Polygon motor defective Poor connection between the polygon motor driver and the BICU board e BICU board defective SC321 No laser writing signal F GATE error 1 Definition B The laser writing signal F GATE does not go to LOW for more than 15 seconds after the copy paper reaches the registration sensor og Qs 30 22
248. tive e Poor motor connector connection e Poor pick up solenoid connector connection e Paper end sensor defective e Too much paper in the LCT e Paper is not properly loaded in the LCT SC541 Fusing thermistor open Definition A The fusing temperature detected by the thermistor was below 7 C for 16 seconds Possible causes e Fusing thermistor defective or out of position Poor thermistor terminal connection 7 14 26 March 1998 SERVICE CALL CONDITIONS 5 542 Fusing temperature warming up error Definition A The fusing temperature does reach the fusing standby temperature within 125 seconds after the main power switch is turned on A Possible causes Ba e Fusing thermistor defective or out of position e Fusing lamp open e Fusing thermofuse open e BICU defective e Power supply board defective e Poor fusing unit connection SC543 Fusing overheat error 1 Definition A A fusing temperature of over 231 C is detected for 5 seconds by the fusing thermistor Possible causes e Fusing thermistor defective e BICU defective e O board IOB defective SC545 Fusing overheat error 2 Definition A The fusing lamp stays on at full power for 30 seconds while in the stand by condition after warming up is completed Possible causes e Fusing thermistor out of position SC546 Fusing ready temperature malfunction Definition A T
249. to an 8 bit digital signal then it sends the digital signal to the BICU Base engine and Image Control Unit board The BICU board can be divided into two image processing blocks the IPU Image Processing Unit and the memory control IC These two ICs do the following e Auto shading filtering magnification y correction and gradation processing Memory controller Image compression decompression and memory address control binary picture processing mode only Finally the BICU board sends the video data to the LD drive board 2 5 IMAGE PROCESSING 26 March 1998 2 2 2 SBU NAD30S and NAD30 SBU Analog Processing IC SBU Analog Processing Analog Processing IC2 gt 8 bit data A231D532 WMF The CCD converts the light reflected from the original into an analog signal The CCD line has 5 000 pixels and the resolution is 400 dpi 15 7 lines mm The CCD has two output lines for odd and even pixels to the analog processing IC For NAD30S and NAD30 there is one analog processing IC For NAD40 there are two analog processing ICs one handles odd pixels and the other handles even pixels The analog processing IC performs the following operations on the signals from the CCD 1 Z C Zero Clamp Adjusts the black level reference for even pixels to match t
250. to toggle between Type and A larger value shifts the punch holes towards the edge of the paper 27 Punch Hole Adjusts the punch hole position in 7 5 7 5 Position the sub scan direction for the punch 0 5 mm step Adjustment unit with three punch holes 0 mm 3 Punch Hole Use the key to toggle between Type and A larger value shifts the punch holes towards the edge of the paper 7 001 Total Operation Displays the total drum rotation time Min Time Display 7 002 1 Total Original Displays the total number of fed Counter originals in copy and fax modes Copy and Fax Modes 2 Total Original Displays the total number of fed Counter originals in copy mode Copy Mode 3 Total Original Displays the total number of fed Counter originals in fax mode Fax Mode 7 003 1 Total Copy Displays the total number of prints in Counter all modes All Modes 2 Total Copy Displays the total number of prints in Counter copy mode Copy Mode 3 Total Copy Displays the total number of prints in Counter fax mode Fax Mode 4 Total Copy Displays the total number of prints in Counter printer mode Printer Mode 4 38 26 March 1998 Mode No Class 3 SERVICE PROGRAM MODE Function Settings 1 C O Copy per Original Counter Displays the number of sets of copies per original when making 10 or more sets of copies e g When making 15 sets of copies of an original this counter value
251. tration from the by pass feed table using the trimming area pattern SP2 902 3 No 10 Use the key to toggle between and before entering the value The specification is 2 1 5 mm 9 9 0 1 mm step 3 0 Side to Side Registration LCT Adjusts the printing side to side registration from the LCT using the trimming area pattern SP2 902 3 No 10 Use the key to toggle between and before entering the value The specification is 2 1 5 mm 9 9 0 1 mm step 1 5 Paper Feed Timing Paper Feed Trays Paper Feed Timing Duplex Paper Feed Timing By pass Adjusts the relay clutch timing at registration The relay clutch timing determines the amount of paper buckle at registration A ve setting leads to more buckling 9 9 1 mm step By pass Feed Paper Size Display Displays the paper width sensor data for the by pass feed table Fusing Idling Selects whether fusing idling is done or not Normally disabled in this machine However if fusing is incomplete on the 1st and 2nd copies switch it on This may occur if the room is cold Refer to Detailed Section Descriptions Fusing Temperature Control for more details Fusing Temperature Control Selects the fusing temperature control mode 4 8 0 On Off 1 Phase 26 March 1998 Mode No Class 3 SERVICE PROGRAM MODE Function
252. ts the MTF filter coefficient for letter mode with binary processing with 65 154 magnification Weak Strong 11 8 2 1 9 0 5 4 10 7 3 6 MTF Filter Coefficient Level Binary Processing 155 256 Selects the MTF filter coefficient for letter mode with binary processing with 155 256 enlargement Weak Strong 11 8 2 1 9 0 5 4 10 7 3 6 MTF Filter Coefficient Level Binary Processing 257 400 Selects the MTF filter coefficient for letter mode with binary processing with 257 400 enlargement Weak Strong 11 8 2 1 9 0 5 4 10 7 3 6 MTF Filter Coefficient Level Binary Processing Text Photo mode Selects the MTF filter coefficient for binary processing in text photo mode Weak Strong 11 8 2 1 9 0 5 4 10 7 3 6 MTF Filter Strength Level Binary Processing 25 64 Selects the MTF strength for binary processing with 25 64 reduction MTF Filter Strength Level Binary Processing 65 154 Selects the MTF strength for binary processing with 65 154 magnification MTF Filter Strength Level Binary Processing 155 256 Selects the MTF strength for binary processing with 155 256 enlargement MTF Filter Strength Level Binary Processing 257 400 Selects the MTF strength for binary processing with 25 64 reduction MTF Filter Strength Level Binary Processing TextPhoto mode Selects the MTF strength for
253. ttings 4 901 10 A D Standard Adjusts the upper limit voltage for 0 255 Voltage in ADS A D conversion in ADS mode 1 step Mode 191 This SP mode is for designer use only Do not use this SP mode 11 Image Data Path This SP mode is for designer use 0 SBU only Do not change the value 12 Gain Adjustment Checks the value of the INI GAIN E Ech white level for the EVEN channel 0 40 after adjusting the white level in the factory This SP mode is for factory use only Do not use this SP mode 13 Gain Adjustment Checks the AGC value of the INI GAIN E Och white level for the ODD channel after 0 17 adjusting the white level in the factory This SP mode is for factory use only Do not use this SP mode 14 Standard White Checks the value of the standard INI FER 110 Level white level in the factory This SP mode is for factory use only Do not use this SP mode 15 Overflow Flag Checks the overflow flag data during OFO SGDO the automatic scanner adjustment 0000 This SP mode is for designer use OFE SGDO only 0000 16 Time Out Flag Checks the time out flag data during TIME the automatic scanner adjustment OUT SGDO This SP mode is for designer use 0000 only 17 Error Flag Checks the error flag data during the GAIN OET 00 automatic scanner adjustment REF OT 00 This SP mode is for designer use only 18 White Shading Checks either the maximum or 0 Maximum Max Min Data minimum whit
254. ty CARD INTERNAL ROM CARD A2305XXXB ROM A2305XXXA Do you INSTALL this card 0000h VERIFY YES NO A321M503 WMF 4 61 PROGRAM DOWNLOAD 26 March 1998 5 Press the YES key The machine erases the current software then writes the new software to the BICU This takes about 100 seconds Display during erasing Display during writing Display when the download is complete If downloading failed an error message appears as follows At this time press the CONFIRM key to re try the download Display if erasing failed Display if writing failed Flash Card Utility CARD INTERNAL ROM CARD A2305XXXB ROM A2305XXXA Erasing ADRS 200000h RDT 0000h 0000h Flash Card Utility CARD INTERNAL ROM CARD A2305XXXB ROM A2305XXXA Writing ADRS XXXXXXh Lo RDT 0000h 0000h Installation Copy is Completed Turn main sw of and pull the card A2305XXXB Nov 18 1997 SUM XXXXh CONFIRM p uu t LU A321M504 WMF Flash Card Utility CARD INTERNAL ROM CARD A2305XXXB Erasing ROM A2305XXXA Failed CONFIRM O Flash Card Utility CARD INTERNAL ROM CARD A2305XXXB Writing 4 62 ROM A2305XXXA Failed COMFIRM A321M505 WMF 26 March 1998 PROGRAM DOWNLOAD Download from BICU to Flash Memory Card A230R919 WMF Turn off the main power switch Remove the flash memory card cover A Plug the
255. unit 2 Install the copy tray bracket A 1 screw 3 Install the copy tray B 1 snap ring 4 Attach the decal C as shown 13 Fold two mylar strips D around the scanner stand E as shown 26 March 1998 1 BIN TRAY UNIT INSTALLATION B 5 5 A2301495 WMF 14 the height of the scanner stand 1 Remove the stand cover A 1 screw 2 Remove two screws B which are securing the scanner stand C 3 Raise the scanner stand until the next set of screw holes in the main frame can be seen through the screw holes in the scanner stand 4 Secure the stand 5 Reinstall the stand cover 15 Reinstall the scanner unit plate D 1 screw NOTE The scanner unit plate should be positioned at the rear as shown E 16 Reinstall four plates F 1 screw each 17 Reinstall the scanner unit 18 Turn on the main power switch and check the 1 bin tray unit operation 3 27 BRIDGE UNIT INSTALLATION 26 March 1998 3 7 BRIDGE UNIT INSTALLATION 3 7 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Q ty 1 Stepped SCO edlen dut dri dede ede 2 2s Connector pd ion ado bea o on ao En Rs 1 3 Entrance Mylar scientie ooa 2 A 2 1 6 Installation Procedure uisi 1 26 March 1998 BRIDGE UNIT INSTALLATION 3 7 2 INS
256. ush the development unit to the left Then pull the PCU out holding the handle C When reinstalling the PCU make sure of the following e The development unit should be pushed to the left The mylar D should not be deformed by the PCU entrance seal E 6 19 PHOTOCONDUCTOR UNIT PCU 26 March 1998 6 3 2 DRUM A230R302 WMF A230R303 WMF A230R304 WMF F Pull the PCU out See PCU Remove the toner cap A and put it over the toner entrance hole B Turn the PCU upside down Then remove the lower PCU cover C 2 screws 3 pawls 4 Push the drum D towards the front the left side in the illustration while releasing the charge roller E using the release lever D Then remove the drum NOTE Do not touch the drum surface with bare hands 5 After replacing the charge roller check the value of SP2 001 1 If it is not at the standard value change it to the standard value using SP2 001 1 NOTE If this is not done the carrier will be attracted to the drum because the charge roller voltage will be too high 6 After replacing the drum perform the ID sensor initial setting using SP3 001 2 7 Dothe process initial setting procedure SP2 805 6 20 26 March 1998 PHOTOCONDUCTOR UNIT PCU 6 3 3 PICK OFF PAWLS f ff 7 A f A230R305 WMF 1 Remove the drum See D
257. ve the transfer belt D NOTE 1 Do not touch the transfer belt surface with bare hands 2 Before installing the new transfer belt clean all the rollers and shafts with alcohol to prevent the belt from slipping 3 When reinstalling the transfer belt make sure that the belt is under the pin E 4 When reinstalling to avoid damage to the transfer belt manually turn the rollers and check that the new transfer belt is not running over the edge of any of the rollers Sanaa 5 D es on og TRANSFER UNIT 26 March 1998 6 5 3 TRANSFER BELT CLEANING BLADE TONER OVERFLOW SENSOR A A230R503 WMF Transfer Belt Cleaning Blade 1 Remove the transfer belt See Transfer Belt 2 Remove the transfer belt cleaning blade A 3 screws NOTE 1 Do not touch the edge of the new blade 2 Check that there is no dust no damage on the edge of the new blade Toner Overflow Sensor 1 Remove the transfer belt cleaning blade 2 Turn over the transfer unit and empty the used toner in the transfer unit 3 Remove the toner overflow sensor B 1 screw 3 terminal wires NOTE When reinstalling the terminal wires the wire color order is red purple blue from the top 6 30 26 March 1998 TRANSFER UNIT 6 5 4 RIGHT COVER B F A230R915 WMF NOTE Do not keep the right cover open for a long time to prevent the drum from being exposed to direct light When keeping t
258. will increase by 6 P O Print per Original Counter Displays the number of sets of prints per original data when making 10 or more sets of prints e g When making 15 sets of prints of an original data this counter value will increase by 6 Total Copies by Paper Size A3 Total Copies by Paper Size A4 Total Copies by Paper Size A5 Total Copies by Paper Size B4 Total Copies by Paper Size B5 Total Copies by Paper Size DLT Total Copies by Paper Size LG Total Copies by Paper Size LT Total Copies by Paper Size HLT Total Copies by Paper Size Other Sizes Displays the total number of prints by paper size Total Number of Scanning Displays the total number of scanned originals Total Paper Tray Counter 1st Paper Tray Total Paper Tray Counter 1st Paper Tray Total Paper Tray Counter 2nd Paper Tray Displays the total number of sheets fed from each paper feed tray 4 39 SERVICE PROGRAM MODE 26 March 1998 Mode No Class 1 and 2 Class 3 Function Settings 7 204 4 Total Paper Tray Counter 8rd Paper Tray 5 Total Paper Tray Counter 4th Paper Tray 6 Total Paper Tray Counter By pass Feed Displays the total number of sheets fed from each paper feed tray 7 205 ADF Total Counter
259. y This serial number will be printed on the system parameter list Use the key to input A 5 812 1 Service Telephone Use this to input the telephone Number at SC number of the service representative condition this is displayed when a service call condition occurs Press the key to input a pause Press the Clear modes key to delete the telephone number 2 Service Fax Use this to input the fax number of Number for the service representative this is Counter Printing printed on the Counter Report UP mode System No 19 Press the key to input a pause Press the Clear modes key to delete the telephone number 5 816 1 CSS CSS Japanese version only 0 Off Function Do not change the values 1 On 2 CE Visit Call 0 Start CSS function 1 Finish 5 821 CSS PI Device Japanese version only 0 4 Code Do not change the value 1 step CSS function 0 5 822 Archive File Clear Clears all archive file data stored 1 Start the HDD Press 1 to clear Before or after performing SP5 131 do this SP mode After this ask the user to restore the archive files 4 35 SERVICE PROGRAM MODE Mode No Class 3 Function 26 March 1998 Settings Plug amp Play Brand Name and Production Name Setting Selects the brand name and the production name for Windows 95 Plug amp Play This information is stored in the NVRAM If the NVRAM is defective these names s
260. y Sensor 12 Lower Pick up Roller 6 Upper Relay Roller 13 Lower Paper Height Sensor 7 Upper Separation Roller 14 Lower Tray Set Sensor 2 49 PAPER FEED 26 March 1998 2 8 2 PAPER FEED DRIVE MECHANISM A231D508 WMF The main motor A drives the pick up and feed mechanism of both the upper and second paper feed stations through gears and the paper feed clutches B When the paper tray is inside the machine the pick up roller always contacts the top sheet of the paper stack see Pick up and Separation Roller Release Mechanism for more detail When the paper feed clutch turns on the pick up roller paper feed roller and separation roller start rotating to feed the paper The paper feed clutch stays on until shortly after the registration sensor C has been activated 26 March 1998 PAPER FEED 2 8 3 PICK UP AND SEPARATION ROLLER RELEASE MECHANISM oo an e A230D704 WMF When the paper tray A is not inside the machine the separation roller B is away from the paper feed roller C and the pick up roller D stays in the upper position When the paper tray is set into the machine it pushes the release lever E This causes the pick up roller D to go down and the separation roller B to move up and contact the paper feed roller PAPER FEED 26 March 1998 2 8 4 PAPER LIFT MECHANISM C A230D702 WMF The paper tray sensor A detects when the p
261. ypes of energy saver mode as follows 1 Energy saver mode 2 Low power mode 3 Auto off mode copier configuration only 4 Night mode copier fax configuration only These modes are controlled by the following UP and SP modes e Low power timer Low power shift timer Auto off timer e Energy saver mode e Auto off disabling SP mode only The way that the machine operates depends on the combination of installed equipment copier only copier fax 2 70 26 March 1998 ENERGY SAVER MODES 2 11 2 ENERGY SAVER MODE Entering the energy saver mode There are two energy saver levels Energy Saver Level 1 and Energy Saver Level 2 The energy saver level can be selected by UP mode The machine enters energy saver mode when one of the following is done e The Clear Mode Energy Saver Key is held down for a second see Note e The low power timer runs out after the end of a job NOTE The machine enters either energy saver mode or low power mode when pressing the Clear Mode Energy Saver key depending on the setting of the UP mode What happens in energy saver mode a os oo an e When the machine enters energy saver mode the fusing lamp drops to a certain temperature depending on the energy saver level see the table below and the operation panel indicators are turned off except for the Energy Saver LED and the Power LED If the CPU receives the image print out command from an application e

Service Manual: NAD series (A230/A231/A232

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