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1. AGO A SA Che A GE N we e Paper empty sensor gt gt Paper near empty sensor d ch A rt DY Duplex front sensor Paper size 1 2 3 and 4 switch TH paay adeg Josuas reaeT 2107 BuddoH g sessed TH MS TH yamg 7 d H TH raar 3307 H ES 7 T9A9T 3104 kl N ki N resor 3204 S reaa 3104 TSAST 3107 7 Casa ere ee TH 7 reser szoa zm reser 220 Has I pra oe Josuas auniesadws enrea ay 7 kl x kl x r a r 3104 reser area mees x 13 af alfa I lm rie UNS Hara Josuas eanfea CY KU asna JOMO enrea GY Hass uag e enren GY UCI BIS enTea GF yx e 3 K P haha Q xa I I N rear 2104 H ens bag TE a 7 TE TE TE TE 7 TE sosuag TE sosuas Adw3 exes soma reser oroa amspsums zaor asos mening amen reser 2204 e em e A a NVOS HOLIMS peleg Ir alqeL y 108 10009 TE yomg bo K l Jeder 7707 y8az s sedeg 7TsA87 7707 gezigiedeg ayasseg 72487 7707 z ng Jadeg apasseg 72487 3 707 H sadd Jauo o Im jS u In on lo Klin JO Ama 13 2 TH aa TA SA E Teaser 3107 YH Zei 3107 m d O Adam L Awg 1 9218 101 ang JOSU Adw3 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 104 People to People Technology E N Chapter 4 Adjustments
2. Replace the low voltage power unit after checking the cable connection Is 32V output to the HVOL T connector pin 5 of the engine board 71K PWB Replace the engine board Replace the high voltage unit orthe belt cassette Assy after checking the cable connection Has the problem been corrected End Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 144 E Chapter 6 Troubleshooting Procedures 2 Dirty Background Figure 6 2 B Were the image drums exposed to external light for a long time Yes No Yes No No No No Yes Yes Yes No Yes No No Yes No Yes Yes Replace the ID unit s Is the roller of the fuser unit dirty Replace the fuser unit Correct the PAPER TYPE setting Light 60 g m Medium Light 67 5 g m Medium 75 g m Medium Heavy 90g m Heavy 105 g m Ultra Heavy 120 g m Transparency Set the MEDIA TYPE correctly Are the LED head Assys connected to the junction board Y71 PWB properly Connect the LED head Assy s to the junction board Y71 PWB properly Is 3 8V output to the following power connector pins of the junction board Y71 PWB 38V Pins 1 to 8 Is 3 8V output to the following cable connector pins between the junction board Y71 PWB and the LED head Assys YPOW connector pin 3 LED head Assy Yellow MPOW connector pin 3 LED head Assy Magenta CPOW connector pin 3 LED head Assy Cy
3. Yes No Yes No Yes No Yes No Yes No No Yes toner kit Replace the Toner sensor for the specified color Remove papers from the stacker Replace the Stacker full sensor Load papers in MT Replace the Paper out sensor Load papers in the specified cassette Replace the Paper out sensor of the specified cassette Check the belt life Replace the Belt unit immediately or at the next maintenance Check the fuser life Replace the Fuser unit immediately or at the next maintenance Replace the job offset sensor Replace the Job offset motor or Engine board Load papers Check the Paper near end sensor Confirm the procedure in the manual Replace the HDD as it is broken Copyright 1999 Okidata Division of OKI America Inc All rights reserved
4. Thank You for purchasing this Factory Service Manual on EBAY from PCTECHI NFO Click Here for more Factory Service Manuals for other Computer and Printer Copier Manufacturers from PCTECHI NFO a OKI Oki Network Solutions for a Global Society Y C7000 Series Color LED Page Printer SERVICE MANUAL This manual describes the procedures for the maintenance of the C7000 Series of printers The document is produced for maintenance personnel use For details on the procedures for handling the C7000 Series of printers see its user documentation Table of Contents Page Service Guide C7000 Series Preface 1 1 Specifications 1 1 System Configuration 2 1 2 Printer Configuration 3 1 3 Option Configuration 4 1 4 Specifications 5 2 Operation 2 0 Operation 6 2 1 Main board CRM PWB 7 2 2 Engine Controller Board K71 PWB 8 2 3 Power Units 9 2 4 Mechanical Processes 10 2 4 1 Electrphotographic process 11 eii 1 Electrophotographic processes 12 sen 2 Charging 13 TA 3 Exposure 14 are 4 Developing 15 ee 5 Transfer 16 SPASSO 6 Fusing 17 ua 7 Cleaning waste toner area 18 Eck 8 Cleaning transfer belt 19 2 4 2 Paper running process 20 RN 1 Paper Feed from Tray 21 TOTI 2 Paper Feed from Multi Purpose Tray MT 22 sai 3 Transport Belt 23 da 4 Driving and Up and Down Movements of I D Unit 24 sta 5 Fuser Unit and Paper Ejection 25 Si 6 Duplex Unit 26 2 5 Sensor 27 2 9 1
5. o Structure The toner low detection device consists of the stirring gear that revolves at a constant speed the stirring bar and the magnet on the stirring bar The stirring bar turns in synchronization with the protrusion of the stirring gear Stirring gear Protrusion Stirring bar o Detection A toner low condition is detected by measuring the contact time between the sensor lever magnet and the stirring bar Full Toner Condition e The stirring bar rotates in symchronization with the stirring gear e Even when the stirring bar magnet is placed in its highest position the stirring bar turns by the force of the stirring gear because the opposite side of the bar is placed in toner Toner Low Condition The stirring bar reaches its highest position then falls to its lowest position under its own weight because of the absence of toner resistance on the opposite side In this situation the bar magnet contact time becomes long By measuring the time a toner low condition is detected Toner low sensor f Sensor lever A Sensor lever B a Toner cartridge e Stirring bar er Toner cartridge Stirring bar Toner Full Condition 12PPM We TNRSNS I LI Le t1 lt 1 08 T 2 3 E Toner Low Condition 12PPM TNRSNS LI Le t1 gt 1 08 T 2 3 When the toner low condition is detected 20 consecutive times toner low is determined The toner low message is displayed when about 500 A4 sheets at 5 density ha
6. 4 While PRINT EXECUTE is indicated in the lower display after the Item 2 procedure press Key 3 to start test printing with the values set in Item 2 and 3 procedures To suspend test printing press Key 7 77 77 At the start of or during test printing if any alarm listed under the Detail column in the table specified below is found the corresponding alarm message appears on the operator panel and test printing is suspended For error details see Sec 4 1 2 9 Error Messages and their Details Print Patterns Patterns 0 8 15 Blank paper output Pattern 1 Pattern 2 Pattern 3 Pattern 4 Pattern 5 Pattern 6 Pattern 7 5 Steps 2 through 4 to be repeated on an as needed basis 6 Touch the 4 key to end the test the display is restored to step 1 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 106 People to People Technology AR Chapter 4 Adjustments 4 1 2 6 NVM initialization The self diagnosis is used to initialize non volatile memory 1 Enter the self diagnosis Level 1 mode and continue to press the 1 and 5 keys until NV RAM INITIAL appears on the upper display the 1 key is for test item increment and the 5 key for test item decrement 2 The table No to be initialized appears There are two tables to be initialized Hold the 2 and 6 keys down until a target table No shows up the 2 key is for table No increment and the
7. 4 key ends the tests the display is restored to step 1 Main motor Y Main geg H Main motor C Fuser motor Exit solenoid x Main motor K A Belt motor e gt EA lt lt e gt lt YA TEN AA e eo CU o am Registration clutch u Cassette1 hopping motor 9 Seen gt gt Cassette2 clutch Cassette2 motor on TO FON H Sensor shutter Cassette3 clutch y oF UD A J Cassette3 motor m A AA Ze Figure 4 3 Unit Name Display Driving Constraints Constraints Display BLACK ID MOTOR Remove all the IDs B Y M and C to drive the unit REMOVE ID YELLOW ID MOTOR Remove all the IDs B Y M and C to drive the unit REMOVE ID MAGENTA ID Y Y MOTOR Remove all the IDs B Y M and C to drive the unit REMOVE ID Y CYAN ID MOTOR Remove all the IDs B Y M and C to drive the unit REMOVE ID BELT MTOR Remove all the IDs B Y M and C to drive the unit REMOVE ID FUSER MOTOR Pe ee ee REGISTRATION MOTOR REGISTRATIONGLUTCH O OO O O OOOO a DUP MOTOR OPTION CC EXIT TRAY2 CASSETTE DUP REAR CLUTCH OPTION CASSETTE 2 MOTOR Remove the cassette 2 to drive the unit EA Rama Mocassalle Pio dive meut CASSETTE2 FEED ROLLER OPTION OPTION IS I OPTION ID UPIDOMIN Il O FAN1 TEST POWER UNIT FAN FAN2 TEST CONTROL BLOCK FAN Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Servi
8. 4 1 2 4 Motor and clutch test This self check routine is used for testing the motor and clutch 1 Go to the self diagnosis level 1 mode and hold the 1 and 5 keys down until the upper display of MOTOR amp CLUTCH TEST is brought up the 1 key increments a test item and the 6 key decrements a test item 2 Hold the 2 and 6 keys down and wait for the display for a unit to be tested to appear on the lower line the 2 key increments a test item and the 6 key decrements a test item Corresponding displays are listed in Table 4 2 MOTOR amp CLUTCH TEST BLACK ID MOTOR 3 Pressing the 3 key starts the test the unit name blinks then the corresponding unit is driven for 10 seconds refer to Figure 4 3 Note The view of step 2 is restored after 10 second driving and with the press of the corresponding switch again the unit is driven again e _ Driving corresponding units subject to the constraints listed in Table 4 2 The driving and activating out of the constraints are disabled and the constraints appear on the lower display e The clutch solenoids must repeat on off operations in normal printing driving units that cannot be driven singly from a viewpoint of their mechanical structures must be driven in combination with the motor 4 Use the 7 key to stop the drive of the unit the corresponding unit display remains the same 5 Repeat the cycle of steps 2 though 4 as the case may be 6 Pressing the
9. 6 key for table No decrement NV RAM INITIAL TABLE 1 3 The upper NV RAM INITIAL starts blinking upon pressing the 3 key and all the items in Table 4 3 are initialized by holding the key down for 10 seconds 4 Press the 4 key to end the test the display of step 1 is restored initialization Item Detail initial Value Unt__ Drum Counter Black Initializes the internal counter after the Yellow replacement of each drum Me Magenta Cyan Belt Unit Counter Initializes the internal counter after the Ec ee Fuser Unit Counter Initializes the internal counter after the Trio eeh TI Toner Counter Black Initializes the internal counter after the Yellow recovery from each toner low error Magenta Cyan Initialization Item oen Tina Vale Ier Registration Set Yellow LED Initializes the X axis correction value for 1 1200 Point x axis Magenta LED the LED head Yellow Magenta Cyan inch Cyan LED Registration Set Yellow LED Initializes the Y axis left correction value 1 1200 Point Magenta LED for the LED head inch y axis Left Cyan LED Yellow Magenta Cyan Registration Set Yellow LED Initializes the Y axis right correction 1 1200 Point y axis Right Magenta LED value for the LED head inch Cyan LED Yellow Magenta Cyan PA Initializes all the items that have been set using levels 2 and 3 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Pa
10. Check Fuser 320 Fuser Error 1 Is the error message displayed 2 Does the error repeat No Fuser unit detected when turning on the printer or closing the cover 1 Is the error message displayed 3 Does the error repeat Check Belt 330 Belt Error No Belt unit detected when turning on the printer or closing the cover Check Drum No ID unit 340 343 Drum detected when Error turning on the printer or closing the cover Install New Drum End of the ID unit 350 Y Drum Life life more copies 351 M Drum printed Life 352 C Drum Life 353 K Drum Life Install Duplex Unit 360 No Duplex unit Check DUPLEX 370 Paper Jam 1 Is the error message displayed 2 Is the Belt unit mounted properly 3 Does the error repeat 1 Is the error message displayed 2 Is the ID unit mounted properly 3 Does the error repeat Is it displayed after the ID unit replacement Paper jam Is a paper jammed in the Duplex detected after uni 2 Is the Fuser unit mounted properly Yes Yes The Duplex unit is Recovered if the Duplex unit is inserted Yes removed from the again No printer Ne Turn off on the printer Replace the Thermistor and turn off the printer Leave it for 30 mins Turn off on the printer Replace the Thermistor or heater and turn off the printer Turn off on the printer Replace the option unit Close the Top cover Close the Side cover Replace the Cover switch Confirm the existen
11. Okidata Division of OKI America Inc All rights reserved OKT ia Service Guide C7000 Series People to People Technology AN Chapter 8 Parts List Paper Tray Guide Table 8 4 No Fark J Name TO Remarks sd i 4osses0 MamFeedAssy_ A o ooo 2 40s7i80 FeedRele SCS o o o S SS a 40818207 _NudgerRoller h o ooo o 4 40325401 Main Feeder Drive Gear DI 5 40839001 Left Cassette Guide Asy h o o Z 6 40639407 Right Cassette Guide Assy M __ EE Tai Li EX A A EE AAA fof O A A m 40349707 Paso Roe 12 40368304 PaperSize Sensing PWBPXO __ fe oT S O e a Paper Size Actuator OOOO oo CSCS Ts 41308801 and Tray Connector h o o fe fe a CSCS 7 TI A EE ERR A A 9 wo Sewo O o o o S 21 31275801 Front Gover Open Swin h __ Copyright 1999 Okidata Division of OKI America Inc All rights reserved Page 165 OKI Service Guide C7000 Series Page 166 People to People Technology APR Chapter 8 Parts List Duplex Unit Figure 8 5 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 167 People to People Technology ei Chapter 8 Parts List ee SM Duplex Unit Table 8 5 No Pane Nawe O Jay Remarks 1 41305301 Duplex TransportAssy h O o _ 2 Ts ERSS E 8 sowas CIN E ee Sl __ Screw M3x6 E f e Tr 70037201 DuplexUnt TI Copyright 1999 Okidata Di
12. Read Write when turned on Error detected at Engine EEPROM Checksum when turned on EEPROM not detected when turned on Error detected at Engine Control Logic Error detected at the Power unit cooling fan in the Controller cavity Inappropriate ambient RH detected by a sensor Inappropriate ambient temp detected by a sensor Does the error repeat No EEPROM Does the error repeat Does the error repeat 5 Is the error message displayed Ne the error repeat 1 Is the error message displayed 2 Does the error repeat 1 Is the error message displayed 2 Does the error repeat Replace the engine control board 71K Confirm the existence of EEPROM Without it mount an EEPROM Replace the engine control board 71K Replace the engine control board 71K Turn off on the printer Replace the fan motor Turn off on the printer Replace the RH sensor Turn off on the printer Replace the temperature sensor Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 130 ei People to People Technology n Chapter 6 Troubleshooting Procedures 6 5 2 LCD Preparation for Troubleshooting 1 Display on operation panel The failure status of the printer is provided on the LCD liquid crystal display of the operator panel Perform appropriate troubleshooting according to messages on the LCD pe Number AM Ema Loading Ja
13. o gt o gt mg gt my gt 4 gt us Demo Printing The demo patterns for destinations stored in ROM are printed Operation Press of Switches Without HDD o gt 3 gt j gt 4 gt 1 LU gt 3 With HDD o gt o gt 3 gt 1 gt 1 gt my gt 4 gt us Ethernet Board Self Diagnostic Printing When the printer is equipped with an Ethernet board holding down the SW on the Ethernet board for two seconds or more runs self diagnostics and prints its result Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 113 CES Chapter 4 Adjustments People to People Technology N 4 2 Adjustments after Parts Replacement Adjustments to be implemented after each part replacement is described below Adjustment and correction of color registration are always required for each part replacement Replaced Part Adjustment LED Head Color balance adjustment Drum Cartridge Color balance adjustment Y M C K Note When the EEPROM of the PU K71 Board is replaced to a new one color balance must be adjusted 4 2 1 Precautions in replacing engine controller board 4 2 2 Precautions in replacing EEPROM 4 2 3 EEPROM replacement after CRM board replacement Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 114 People to People Techno
14. 2 Duplex Unit 3 Expansion Memory 64 128 256 MB Internal Hard Disk OkiLAN 6200e NIC Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI e People to People Technology Si 1 4 Specifications 10 External Dimensions Weight Papers Print Speed Resolution Power Input Power Consumption Frequency Noise Consumable Life Service Guide C7000 Series Page 5 Chapter 1 Specifications Height 16 9 in Width 16 9 in Length 24 4 in 92 5 Ibs Type Ordinary paper Transparencies Recommended MLOHP01 Size Postal card Legal 13 or 14 Executive A4 A5 B5 A6 Only the 1st tray and the front feeder support A6 and postal card sizes Weight 1st tray 55 kg to 90 kg 64 to 105g m 2 Front feeder 55 kg to 140 kg 64 to 163g m 2 Color 12 pages per minute Transparency 5 pages per minute Monochrome 20 pages per minute Transparency 12 pages per minute Postal Card Label Thick Paper 8 pages per minute C7200 600 x 600 C7400 1200 x 1200 dots per inch 100VAC 10 Peak 1300W Normal Operation 400W 5 duty Idle 110W Power Saving Mode 45W or less 50Hz or 60Hz 2 Operation 54 dB Without second tray Standby 45 dB Power Saving 43 dB Toner Cartridge 10 000 pages 5 duty each of Y M C and K Image Drum 30 000 pages Continuous printing each of Y M C and K 11 Parts Replaced Periodically Fuser Unit Assy Eve
15. 3 Roller 2 Motor Roller 1 Figure 2 11 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI e e Service Guide C7000 Series Page 27 People to People Technology AN Chapter 2 Operation 2 5 Sensor 2 5 1 Paper related sensors 2 5 2 Other sensors Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI e e Service Guide C7000 Series Page 28 People to People Technology An Chapter 2 Operation 2 5 1 Paper related sensors Paper eject roller Kaze Stacker full sensor Entrance belt sensor MT feed roller Heat roller C drum M drum Y drum K drum a sensor paved roller pa 2 H Driving roller i a Pinch roller 1 Backu 4 roller f i f Registration roller A P P Transport belt Beltcleaningblade La D Registration roller B f x vA Entrance casselte sansor d i Entrance MT sensor f e Duplex in sensori A 9 1st feed roller Q9 v A Fen oe cp WEEK A F wem i d x Es Auxiliary rollers i N _ AZ 2nd teed roller Duplex rear sensor a Duplex front sensor Duplex feed rollers Me Duplex roller E Entrance MT sensor Detects the beginning of incoming paper to Entrance Cassette i Sensorstatus ON paper is present determine the timing for switching from hopping to OFF Paper is absent sensor transport Entrance Belt sensor Detects the beginning of transported paper and ON paper is present based on the t
16. 6 Choose the number of the color closest to the part on the test pattern If the selected color is 00 the color balance is correct and no adjustment is required If it is not 00 the color balance should be adjusted in the procedures below 7 Press 2 or 6 several times to display the value selected in Step 6 8 Press 3 33 33 to start test printing 9 Repeat the steps 6 8 to approximate the color at the part on the test pattern to 00 as much as possible 10 Press 4 to display ON LINE No PartNo Name ay Recommended Qty per Year Remarks 2nd 3rd Tray 500 Sheet Feeder Assy 41304503 2nd 3rd Tray 500 Sheet OEL APS Feeder Assy 41780302 Feeder control PWB RS ER MEE ee IA 1 41400502 Cover Front OP Assy 41462301 Lower Connector w harness 1 1 1 41581101 Feeder Drive Assy BEE 40366501 Feeder Motor BEE 41401001 Feeder Clutch BEE 6 8 y Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 118 ei People to People Technology n Chapter 5 Period Maintenance 5 0 Periodic Maintenance 5 1 Parts Replaced Periodically 5 2 Cleaning 5 3 Cleaning LED Lens Array 5 4 Cleaning Pickup Roller Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 119 People to People Technology IN Chapter 5 Period Maintenance 5 1 Parts Replaced Perio
17. 8 8 Disengage the four claws to demount the toner sensor 9 Demount the stacker full sensor 12 10 Demount the exit rollers 15 11 Detach the LED harnesses K Y M and C 16 12 Detach the top cover inner frame Assy 17 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 53 People to People Technology C N Chapter 3 Disassembly 3 3 5 Top Cover Handle Top Cover Latch Top Cover Latch Spring 1 Remove the two screws 1 to detach the top cover handle 2 and disengage the top cover latch 3 at the same time the two top cover latch springs 4 become detached Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 54 People to People Technology Cc N Chapter 3 Disassembly 3 3 6 Eject Guide Assy 1 Remove the five screws 1 to detach the eject guide assy 2 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 55 People to People Technology 8 Chapter 3 Disassembly 3 3 7 Cassette Assy Front Cover Assy Front Cover Inner Baffle 1 Detach the cassette assy 1 2 Open the front cover 2 and disengage it at two places to detach it 3 Detach the front cover inner baffle 3 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C700
18. Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 153 People to People Technology CAA Chapter 6 Troubleshooting Procedures Figure 6 3 Ground Developing roller Toner supply roller Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 154 People to People Technology APR Chapter 7 Wiring Diagram 7 1 Resistance Check Up ip pue sul uasrjag e II om we Dr z pue suri uesmjag gt Up p pue sud asimag Up 2 pue sud uesmjag DG s p pue g supi uesiag 062 2 pue sud uesmjag GL Z pue sud ueamjag a Up p pue g Sud ussmsg Up 2 Pue sul uesmag UP p pue g sul Ups Up Zpue suki upemeg o mmm wen UL9 pue Sud usamag o W 062 p pue Su uoamag 103041 189584 D I 2 pue sud uesmag N D I pue g sui vermag ugt 2 pue sul uesmag tg iin Restano Main Cooling Fan Low Voltage Power Unit Red po 32 Y t Electrical Chassis 3 u nn Cooling Fan FANALM N Upper roller 2 Backup roller 1 Upper Roller Side Thermostat Thermostat Between pins a and b ua Heater Healer e a Between pins c and d Open e Between pins e and f 363kN at 25 C x 2 Backup Roller Side Fuser Unit Between pins a and b Between pins c and d 022 or open Between pins e and f 363kQ at 25 C Copyright 1999 Okidata Di
19. Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 47 to People Technology EE Chapter 3 Disassembly e ann Duplex Unit OKT e e Service Guide C7000 Series Page 48 People to People Technology N Chapter 3 Disassembly 3 3 Replacing Parts This section described how to replace the parts and assemblies shown in the following disassembling system diagram 3 3 1 Top Cover 3 3 2 LED assy LED assy Spring 3 3 3 Top Cover Unit 3 3 4 Control Panel Assy Control Panel Bezel LED Control PWB Toner Sensors Stacker Full Sensor Control Panel Control Panel Tape Harness Eject Rollers 3 3 5 Top Cover handle Top cover Latch Top Cover Latch Spring 3 3 6 Eject Guide Assy 3 3 7 Cassette Assy Front Cover Assy Front Cover Inner Battle 3 3 8 Retard Pad Assy Retard Pad Assy Spring 3 3 9 Feed Roller and Nudger Roller 3 3 10 Rear Cover 3 3 11 Face Up Tray 3 3 12 Left Side Cover 3 3 13 Right Side Cover 3 3 14 Multi purpose Tray Assy Multi purpose Tray Cover Assy Links Multi purpose Tray Top Cover Multi purpose Tray Drive gear 3 3 15 Drum Contact Assys 3 3 16 Registration Roller Assy A Registration Drive Gear A 3 3 17 Registration Roller Assy B 3 3 18 Registration Clutch and Registration Motor Assy 3 3 19 Main Cooling Fan 3 3 20 Color Registration Sensor Assy 3 3 21 Duplex Guide Assy 3 3 22 Electrical Chassis Cooling Fan 3 3 23
20. Cut Driver EEPROM DIA 8 x Pulse Motors Toner and ID sensors ID checks CU IF High Voltage Power Supply Serial Interface 2 channels Paper Feed System Sensors Paper Feed Paper Registration Write and Eject Sensors MT Sensor Stage position and paper empty Cassette 1 Sensor Paper empty and near empty Any of Shutter Clutch Belt Home and Transparency Sensors Belt and Fuser Checks Cassette Size Figure 2 3 The engine control block PU is controlled by the engine controller board K71 PWB which consists of a CPU MSM66Q577 general LSI chip flash ROM EEPROM pulse motor drivers and a video memory see Figure 2 4 1 CPU This a 16 bit CPU with an AD converter containing 126 Kbyte ROM OKI MSM66Q577 controls the entire system 2 General LSI This LSI MG63P011 001LA which is contained in the printer engine control block has 4 Mbits of video memory and functions such as controller engine video interfacing LED interfacing motor control sensor input video memory control main scan color misalignment correction skew correction and high voltage power supply control 3 Flash ROM The flash ROM 29F400 70 is of 4 Mbits and PU programs are stored in it 4 EEPROM The EEPROM NM93C66N NW is of 4 Kbits and mounted on the board with an IC socket Correction values are stored in it 5 Pulse Motor Driver The pulse motor driver A2919SLBTR A2918SWV drives the eight pulse motors to revolve the EP and t
21. Error Service Call 037 Error Service Call 038 Error Service Call 040 Error RAM Configuration Error The CU RAM installation order was not followed Slot1 RAM Spec Error The CU RAM Got DIMM specification is not supported Slot2 AM Spec Error The CU RAM Slot2 DIMM specification is not supported Slot3 RAM Spec Error The CU RAM Slot3 DIMM specification is not supported Slot4 RAM Spec Error The CU RAM Slot4 DIMM specification is not supported CU EEPROM Error Is the installation order followed Can the printer recover from the error by replacing the RAM DIMMs Is the RAM DIMM a genuine part Is the concerned RAM DIMM installed properly Can the printer recover from the error by replacing the RAMM DIMM Is the RAM DIMM a genuine part Is the concerned RAM DIMM installed properly Can the printer recover from the error by replacing the RAMM DIMM Is the RAM DIMM a genuine part Is the concerned RAM DIMM installed properly Can the printer recover from the error by replacing the RAMM DIMM Is the RAM DIMM a genuine part Is the concerned RAM DIMM installed properly Can the printer recover from the error by replacing the RAMM DIMM Can the printer recover from the error by replacing the EEPROM on the CU board Yes No Replace the CRM board The EEPROM needs replacement Correct the installation order Replace the RAM DIMMs Replace the CRM board The EEPROM
22. Inc All rights reserved OKT e e Service Guide C7000 Series Page 109 ei People to People Technology N Chapter 4 Adjustments 4 1 2 9 Error Messages and their Details EEPROM SUM CHECK ERROR EEPROM sum check error INPATH DUPLEX INPUT Duplex unit input jam INPATH DUPLEX ENTRY Duplex unit entry jam INFEED TRAY1 Tray1 hopping error JAM DUPLEX ENTRY Duplex unit entry jam INPATH TRANSPORT Transport jam INPATH EXIT JAM DUPLEX REVERSAL Duplex unit reversal jam PAPER NEAR END TRAY1 Paper is going out in Tray1 PAPER NEAR END TRAY5 PX703 Paper is going out in Tray5 INPATH DUPLEX INPUT Duplex unit input jam INPATH DUPLEX ENTRY Duplex unit entry jam INPATH REVERSAL Duplex unit reversal jam INFEED TRAY1 Tray1 hopping error INFEED TRAY2 Tray2 hopping error INFEED TRAY3 Tray3 hopping error INFEED FRONT FEEDER Front feeder hopping error INFEED DUPLEX Duplex unit hopping error INFEED TRAY4 PX703 Tray4 hopping error INFEED TRAY5 PX703 Tray5 hopping error INPATH Information of paper that stays on the paper path INFEED Information of paper that stays at the paper entrance Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 110 HF People to People Technology N Chapter 4 Adjustments 4 1 3 CRM board adjustments Destination Setting The CRM board a main board is acommon ROM among destinations When using
23. Links 62 3 3 15 Drum Contact Assys 63 3 3 16 Registration Roller Assy A Registration Drive Gear 64 A 3 3 17 Registration Roller Assy B 65 3 3 18 Registration Clutch and Registration Motor Assy 66 3 3 19 Main Cooling Fan 67 9 9 20 Color Registration Sensor Assy 68 3 3 21 Duplex Guide Assy 69 9 9 22 Electrical Chassis Cooling Fan 70 3 9 29 Printer Engine Controller PWB 71 3 3 24 Printer Unit Chassis 72 3 3 25 Entrance Cassette Sensor Actuator 73 3 3 26 Entrance Sensor PWB 74 3 3 27 Entrance MT Sensor Actuator and Entrance Belt 75 Sensor Actuator 3 3 28 Fuser Exit Roller 76 3 3 29 Exit Sensor Assy 77 3 3 30 Fuser Latching Handle L 78 3 3 31 Belt Motor Assy 79 Table of Contents Page 3 3 32 Fuser Latching Handle R 80 3 3 33 Main Motor Assy 81 3 3 94 Main Feeder Drive Motor 82 3 3 35 Contact Assy Left Plate Assy 83 3 3 36 Low Voltage Power Supply 84 3 3 37 High Voltage Power Supply 85 3 3 38 Main Feed Assy 86 3 3 39 Cassette Left Guide Assy 87 3 3 40 Cassette Right Guide Assy 88 3 3 41 Fuser Unit 89 3 3 42 Belt Unit 90 3 3 43 Duplex Unit 91 3 3 44 Guide Rails L and R 92 3 3 45 Duplex Transport Assembly 93 3 3 46 CU Assy 94 4 Adjustments 4 0 Adjustments 95 4 1 Maintenance Modes and Their Functions 96 4 1 1 Maintenance Menu 97 4 1 2 Engine maintenance mode 98 4 1
24. Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 63 People to People Technology CC nN Chapter 3 Disassembly 3 3 15 Drum Contact Assys 1 Insert a flatblade screwdriver between the printer case and the drum contact assy 1 to demount the drum contact assy 1 OKI Service Guide C7000 Series People to People Technology e Chapter 3 Disassembly 3 3 16 Registration Roller Assy A Registration Drive Gear A 1 Remove the left side cover see section 3 3 12 2 Remove the right side cover see section 3 3 13 3 Remove the multipurpose tray see section 3 3 14 4 Remove the four screws 1 to demount the registration roller Assy A 2 5 Remove the E ring 3 to detach the registration gear A 4 Page 64 rved Inc All rights rese of OKI America Copyright 1999 Okidata Division OKI Service Guide C7000 Series People to People Technology Chapter 3 Disassembly mi A nf 3 3 17 Registration Roller Assy B 1 Remove the cassette Assy 2 Open the front cover 3 Remove the right side cover see section 3 3 13 4 Remove the left plate Assy see section 3 3 22 5 Remove the registration clutch see section 3 3 18 6 Unscrew the four screws 1 and pull out the registration Assy B 1 in the arrow direction Page 65 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Se
25. PY Transfer roller x4 a Ss Fe pez Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 21 a y People to People Technology ke N Chapter 2 Operation 1 Paper Feed from Tray 1 The running of the feed motor in the arrow direction a drives the feed roller and the nudger roller This operation feeds paper from the tray 2 After the beginning of the paper turns the entrance cassette sensor on the paper is advanced a fixed length When the paper beginning reaches the registration roller Assy A the feed motor stops 3 The running of the registration motor in the arrow direction b which synchronizes with the above paper advance operation drives the registration roller Assy B and the electromagnetic clutch The registration roller Assy A moves with the operation of the electromagnetic gear when the paper beginning touches the registration roller Assy A where the feed motor does not run The feed roller idles via the built in one way clutch and the nudger roller idles because the planet gear is disengaged 4 The registration motor transports the paper until the paper end passes through the entrance belt sensor Registration motor Entrance belt sensor Assy B Feed motor Feed roller One way clutch gear Registration roller Paper gear Assy A Nudger roller Entrance cassette sensor Figure 2 6 Co
26. People Technology ke N Chapter 1 Specifications 1 1 System Configuration Figure 1 1 shows the system configuration of the C7000 Series of printers LL eunBig wun wun wun AIM al am wun 129 lor Aq spew pied N 101S UOIK nun JAMO uey 90 abeyloA YBIH fl JUN Jaune aaH 4n ON O EJOA mo 301 Soe L WIIG z Josuas Buipeo WH zb d 10su9s BUIpeo yams SOY 44 Josuas idwa Jaded yyy Josuas Adua mau Jadey Josuas jdwe sodeg sua pl Josuas azis sadeg lt SJO SIUJJSY PUE Santer SIOSUSG gt SINWIO Woy xg joujuog uug JI 9 Buddo uonensidag CI M LW qdA dw aD 39H 198 JOO as nd Ly PESH 037 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 3 e D EEN People to People Technology N Chapter 1 Specifications 1 2 Printer Configuration The inside of the printer is composed of the following Electrophotographic Processor Paper Paths Controller Block CU and PU Operator Panel Power Units High Voltage Unit and Low Voltage Unit Figure 1 2 shows the printer configuration Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 4 o Oo caga People to People Technology N Chapter 1 Specifications 1 3 Option Configuration The following options are available for the C7000 Series of printers 1 2nd Tray 3rd Tray
27. Printer Engine Controller PWB 3 3 24 Printer Unit Chassis 3 3 25 Entrance Cassette Sensor Actuator 3 3 26 Entrance Sensor PWB 3 3 27 Entrance MT Sensor Actuator and Entrance Belt Sensor Actuator 3 3 28 Fuser Exit Roller 3 3 29 Exit Sensor Assy 3 3 30 Fuser Latching Handle L 3 3 31 Belt Motor Assy 3 3 32 Fuser Latching Handle R 3 3 33 Main Motor Assy 3 3 34 Main Feeder Drive Motor 3 3 35 Contact Assy Left Plate Assy 3 3 36 Low Voltage Power Supply 3 3 37 High Voltage Power Supply 3 3 38 Main Feed Assy 3 3 39 Cassette Left Guide Assy 3 3 40 Cassette Right Guide Assy 3 3 41 Fuser Unit 3 3 42 Belt Unit 3 3 43 Duplex Unit 3 3 44 Guide Rails L and R 3 3 45 Duplex Transport Assembly 3 3 46 CU Assy Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 49 Chapter 3 Disassembly People to People Technology N 3 3 1 Top Cover 1 Open the Top Cover assy 2 Remove the nine screws 1 to detach the top cover 2 Copyright 1999 Okidata Division of OKI America Inc All rights reserved Service Guide C7000 Series Page 50 Chapter 3 Disassembly e OKI en People to People Technology An 3 3 2 LED Assy LED Assy Spring 1 Open the top cover 1 2 Remove the three cables and unhook the LED Assy 2 at two places to demount it the two springs 3 become detached together with the LED Assy 2 3 Remove the LED co
28. Since screws collars and other small parts are likely to be lost they should temporarily be attached to the original positions 7 When handling ICs such as microprocessors ROM and RAM and circuit boards follow standard electrostatic procedures 8 Do not place printed circuit boards directly on the equipment or floor screws No Bere Toole J res T Ee No 1 100 Philips screwdriver No 2 200 Philips screwdriver Magnetized BE i Handy cleaner LED Head cleaner Cleans LED P N 51802901 head Copyright 1999 Okidata Division of OKI America Inc All rights reserved pa AA EA RW RW PES RM A OKT Service Guide C7000 Series Page 43 People to People Technology APR Chapter 3 Disassembly 3 2 Parts Layout Top Cover Assy Printer Unit Cassette Guide Assy L R Duplex Unit Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 44 People to People Technology APR Chapter 3 Disassembly Top Cover Assy Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 45 People to People Technology AR Chapter 3 Disassembly Printer Unit Printer Unit 1 2 Printer Unit 2 2 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 46 E Chapter 3 Disassembly Cassette Guide Assy L R
29. Toner MAGENTA TONER JD Ja o Cyan Toner CYANTONER Joc gt Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT S Service Guide C7000 Series Page 108 a LI People to People Technology IN Chapter 4 Adjustments 4 1 2 8 Consumable Counter Display Continuos The self diagnosis is used to indicate the consumable life cycle consumption status The consumable life cycle consumption status a count not initialized even after the replacement of a consumable is counted without break 1 Enter the general self diagnosis mode and the 1 and 5 keys down until the upper display PRINTER STATUS appears the 1 key is for item increment and the 5 key for item decrement 2 When the 2 and 6 keys are pressed the life cycle consumption status of the consumables shows up item by item the press of the 3 and 7 keys is invalid 3 Pressing the 4 key ends the test flips back to the display of 1 em Upper Display Lower Display Format Unit Dea Total Number of TOTAL SHEETS PER PRINTS DEC Prints Shows the number of Sheets Fed FED sheets fed including blank paper Black Impressions BLACK PERE IMAGES DEC Image Converts the total DEC IMPRESSIONS a count in letter paper Magenta MAGENTA IMAGES DEC Image sheets to set it Impressions IMPRESSIONS Cyan Impressions CYAN PERA IMAGES DEC Image IMPRESSIONS Copyright 1999 Okidata Division of OKI America
30. WE signals 1 2 Short Disconnects WE signals 2 3 Short Connects WE signals Factory 2 3 Short Setting Re programmable flash ROM DIMM Short Plug DIMM2 Configures the banks of the ROM DIMM slot B 1 2 Short For 1 Bank DIMM 2 3 Short For 2 Bank DIMM A 1 bank DIMM dual sided 1 bank is only a prototype and in production run printers does not exist Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 112 People to People Technology Chapter 4 Adjustments eee AER 4 1 3 2 Printing Menu Reports Menu Map Printing The program versions the controller block configuration and other configurations and settings of the printer are printed Operation Press of Switches Without HDD 0 gt 3 gt 3 With HDD o gt o gt g gt Uan File List Printing A list of files stored on a HDD or in ROM is printed Operation Press of Switches Without HDD 0 gt 3 gt 1 gt 3 With HDD 0 gt o gt 3 gt wn gt oe i Font List Printing PCL A list of PCL fonts is printed Operation Press of Switches Without HDD 0 gt 3 gt 1 gt 1 gt 3 With HDD o gt N gt 3 gt Wa gt 4 gt CH Font List Printing PS A list of PS fonts is printed Operation Press of Switches Without HDD o gt 3 gt q gt 1 gt 1 gt 3 With HDD
31. alarm Signal ground Not used e Connector pin arrangement 4 Signal Level e LOW 0Vto 0 8V e HIGH 2 4V to 5 0 V 5 Specifications Description Item i Mode Compatibility mode Nibble mode ECP mode Data bit length 8 bits Compatibility mode 4 bits Nibble mode 9 bits ECP mode Control Handshaking control is performed in each mode Data received from the host is stored in the receive buffer Busy control is performed Signal lead control is performed 6 Timing Charts Compatible mode a Data receiving timing PARALLEL DATA DATA BITs 1 to 8 DATA STROBE BUSY ACKNOWLEDGE 0 5 ps min 0 5 us min 0 5 us min 0 5 us min 0 5 us max 0 5 us to 10 us 0 min b On line off line switching timing by ON LINE SW ON LINE SW BUSY SELECT c Off line on line switching by ON LINE SW ON LINE SW BUSY SELECT ACKNOWLEDGE d nInit timing when set to the effective INPUT PRIME signal 50 us min INPUT PRIME BUSY SELECT ACKNOWLEDGE 0 5 ws to 10 ms e Nibble mode Conforms to IEEE 1284 specification compliant e ECP mode Conforms to IEEE 1284 specification compliant Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 169 People to People Technol APR Chapter B 2nd 3rd Tray Maintenance 1 Parts Replacement 1 1 Cove rldle Roller Assy 1 2 PCB 1 3 Feeder
32. and LED head 2 Correcting A preset pattern to detect color misalignment is printed on the belt The reflection sensor reads the printed pattern each color s misalignment value is sensed and its correction value is determined The correction value is used each color s Cyan Magenta and Yellow writing timing in comparison with that of Black Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 31 People to People Technology Chapter 2 Operation 2 7 Transfer control Responds to Environmental Changes Room Temperature and Relative Humidities The C7000 Series of printers measure the room temperature and the relative humidity using their room temperature sensors and humidity sensors An optimum transfer voltage under each measurement environment is calculated to perform real time control on printing with its optimum voltage Environmental sensing table om Read b Value Asad try Van at Sarsa Sensor Register Temparatore C Vale Acad by Sensor Registe Valve ature CH Te Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 32 People to People Technology IN Chapter 2 Operation 2 8 Paper Jam Detection The C7000 Series of printers detect paper jams after power on and during printing When a paper jam occurs the printing operation is immediately suspended A
33. and the guide rail A 10 3 Unscrew the two screws 11 to remove the guide rail 11 4 Unscrew the two screws 12 and three screws 14 then detach the CRM board 15 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series People to People Technology e e Page 95 n Chapter 4 Adjustments 4 0 Adjustments Adjustments on the C7000 Series of printers are made by key entry on the operator panel In addition to a standard menu there is a maintenance menu in each printer Select the one that serves the purpose of intended adjustment Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 96 HF People to People Technology n Chapter 4 Adjustments 4 1 Maintenance Modes and Their Functions 4 1 1 Maintenance Menu 4 1 2 Engine Maintenance Menu 4 1 3 CRM Board Adjustments Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI People to People Technology mere Service Guide C7000 Series Page 97 Chapter 4 Adjustments 4 1 1 Maintenance Menu The following menu category includes the maintenance menu category The following can be set from this menu a a ine Maintenance Power Save Mode Enabled Menu Disabled Normal Paper Back Setting Normal Paper Color Setting Transparency Black Setting Transparency Color Setting Sets the Powe
34. board 71K PWB Pins 6 7 and 14 5V Pins 1 3 11 and 16 OV Yes Is 5V output to the panel connector on the relay board 71 PWB Pin 5 5V Pin 2 OV No Replace the relay board Yes Isthe operator panel cable connected properly No Connect the cable properly Yes Replace the operator panel cable Is the printer recovered from the error No Replace the operator panel cover Assy Yes End Is 5V output to the power connector of the engine board 71K PWB Pins 11 12 13 and 14 5V Pins 3 4 5 6 25 26 27 and 28 OV No Replace the low voltage power unit after checking the power connector for connection Replace the engine board Are the following voltages output to the PU IF connector of the main board Pins 137 to 147 187 to 197 5V Pins 125 to 136 175 to 186 3 3V Pins 148 and 198 12V Pins 101 to 124 149 to 174 199 and 200 OV Yes Replace the main board Are the following voltages output to the power connector of the engine board Pins 11 12 13 and 14 5V Pins 15 15 17 and 18 3 3V Pin 1 12V Pins 7 8 9 and 10 32V Pins 3 4 5 6 25 26 27 and 28 OV Yes Replace the engine board Replace the low voltage power supply Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI e e Service Guide C7000 Series Page 132 People to People Technology an Chapter 6 Troubleshooting Procedures 2 Jams 2 1 Paper Loading Jam 1st Tray 2 2 Paper Loading Jam Multi Purpose Tra
35. every 200 pages LED head Transfer belt Belt running direction Color alignment sensors L and R Cleaning blade Transfer belt Color alignment sensor R Ly Belt running direction LA Color alignment sensor L Bottom View Cleaning blade Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 38 People to People Technology N Chapter 2 Operation 2 14 Version Read of Units Replaced Periodically The version of each of the I D fuser unit and belt unit which are replaced periodically is determined whether it is new or previous according to whether the fuse in it is conducting or out of conduction When the fuse is conducting the unit is decided that it is new The new or previous judgment is performed at power on and at cover close The life counter of every new unit is reset and the new or previous judging purpose fuse in the unit is cut Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 39 CES Chapter 2 Operation People to People Technology o 2 15 Life Count for Units Replaced Periodically The life of each of the I D fuse unit and belt unit which are replaced periodically is counted as shown in the following table UnitName Condition A I D Image Drum The number of drum revolutions is counted on a letter Warning the unit can still Cartridge
36. into intimate contact with the drum surface The paper is placed on the drum surface and positively opposite to the charge of the toner charged by the transfer roller on its back Applying positive high voltage from the power supply to the transfer roller moves the positive charge induced by the transfer roller to the paper surface at the contact portion between the transfer roller and the paper the paper surface drawing the negatively charged toner from the drum surface OPC drum Paper Conveying belt Transfer roller Power supply unit Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 17 People to People Technology e Chapter 2 Operation 6 Fusing 6 Fusing When passing through between the heat roller and the backup roller the toner image transferred to the paper is fused into place by the application of heat and pressure to it The built in upper and lower halogen lamps of 700 watts and 500 watts heat the Teflon coated heat roller The fusing temperature is controlled by the sum of the temperature detected by the thermistor moving over the heat roller surface and the temperature detected by the thermistor moving over the backup roller surface For safety a thermostat is provided and when the heat roller temperature rises by a fixed degree or more becomes open to cut off voltage supply to the heater The backup roller is being pressed aga
37. or line interval Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI k Service Guide C7000 Series Page 143 People to People Technology N Chapter 6 Troubleshooting Procedures 1 Light or Faded Image on Whole Page or Color Misalignment on Whole Page Figure 6 2 A Are toners running short is toner low displayed Yes No No Yes Yes No No Yes Yes Yes No Yes No No Yes No Yes Yes Supply toner s Is proper paper used Use proper paper Are the LED head lenses dirty Clean the dirty lens es Are all the LED head Assys connected to the junction board Y71 PWB and the engine board 71K PWB properly Connect the cable between the LED head s and the engine board properly checking the cable connection Is 3 8V output to the following power connector pins of the junction board Y71 PWB 3 8V Pins 1 to 8 Is 3 8V output to the LED head Assys from the junction board Y71 PWB YPOW connector pin 3 LED head Assy Yellow MPOW connector pin 3 LED head Assy Magenta CPOW connector pin 3 LED head Assy Cyan KPOW connector pin 3 LED head Assy Black No Replace the junction board Y71 PWB Replace the LED head Assy s after checking the cable connection Replace the low voltage power unit after checking the cable connection Has the problem been corrected End Is 32V output to the power connector of the engine board 71K PWB 32V Pins 7 to 10
38. paper length be used continuous printing paper interval basis End of Life Time when a distance equivalent to pages of 20K is printed 3P J Warning the unit can still be used Toner Cartridge The number of dots printed is counted The used Do not use the unit amount is determined based on the counter value Geer anymore section 2 16 End of Life Time when toner low occurs Belt Unit The number of drum revolutions is counted on a letter Warning the unit can still paper length be used continuous printing paper interval basis The count of one is performed every time when one page is passed End of Life Time when the counter value reaches 60K Warning the unit can still be used Fuser Unit The count of one is performed every time when one Warning the unit can still page is passed be used End of Life Time when the counter value reaches 60K Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 40 People to People Technology nN Chapter 2 Operation 2 16 Toner Consumption Detection The used toner amount is detected by counting the number of dots printed The counting starts after toner low is removed The sum of the counted values is stored in EEPROM Upon detection of toner low the amount used is forcedly set to 8 After that when the equivalent of pages of 1K on A4 and 5 duty is reached toner empty occurs and the printing stops Copyright 19
39. pin 3 LED head Assy Black No Replace the junction board Y71 PWB Yes Replace the LED head Assy s after checking the cable connection No Is 32V output to the power connector of the engine board 71K PWB 3 8V Pins 7 to 10 No Replace the low voltage power unit after checking the cable connection Yes Is 32V output to the HVOLT connector pin 5 of the engine board 71K PWB No Replace the engine board Yes Replace the high voltage power unit or the belt cassette Assy after checking the cable connection Has the problem been corrected Yes End No Are the ID terminals connected to the contact Assy properly See Figure 6 2 No Connect the I D terminal s to the contact Assy properly Yes Replace the I D drum unit s Notes 1 When replacing the engine board 71K PWB demount the EEPROM from the board and mount it on a new board 2 When the EEPROM is not replaced see Section 4 2 2 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI in Service Guide C7000 Series Page 146 People to People Technology N Chapter 6 Troubleshooting Procedures 4 Vertical Belt or Line Black or Color Belt or Black or Color Line Figure 6 2 D Are the LED head Assys connected to the junction board Y71 PWB properly No Connect the LED head Assy s to the junction board properly Yes Replace the LED head Assy s after checking the cable connection Has the problem been corrected Yes End No Replace the junction boa
40. running No Does the registration of the belt motor lie at the rated value approx 7 912 No Replace the belt motor Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI e e Service Guide C7000 Series Page 136 E Chapter 6 Troubleshooting Procedures 2 4 Paper Exit Jam Has the paper exit jam occurred immediately after power on Yes No Yes No No Yes No Yes Yes Yes No Yes Is the paper jammed at the exit sensor Yes Remove the jammed paper Does the sensor lever move properly No Replace the sensor lever Does the exit sensor operate properly Operate the sensor lever to check the sensor for proper operation on the switch scan test in the system maintenance mode or check the signals on the connector PARTTEMP pin 8 of the engine board 71K PWB No Replace the exit sensor after checking the signal cable connection Replace the engine board Is the face up stacker cover open or close completely Open or close the stacker cover completely Is the heat motor running Does the resistance of the heat motor lie at the rated value approx 7 902 No Replace the heat motor Is 32V output to the POWER connector Pins 7 10 on the engine board No Replace the low voltage power unit Replace the engine board after checking the cable connection Does the exit guide Assy operate properly Replace the exit guide Assy Replace the engine board Copyright 1999 Okida
41. to 3 The level 1 aims to assist in checking the media transport systems and the basic operations of printing systems etc The level 2 which sets the consumable counter and tests the color registration adjustment function does not require relatively special knowledge Working with the level 3 including process parameter setting takes expertise and the level contains PU individual experimental elements Basically do not use items other than those in the level 1 4 1 2 1 Operator Panel 4 1 2 2 General self diagnosis mode level 1 4 1 2 3 Switch scan test 4 1 2 4 Motor and clutch test 4 1 2 5 Test Printing 4 1 2 6 NVM initialization 4 1 2 7 Consumable counter display 4 1 2 8 Consumable counter display continuous 4 1 2 9 Error Messages and their Details Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 99 People to People Technology s Chapter 4 Adjustments 4 1 2 1 Operator panel Operational descriptions about the self diagnosis are premised on the following operator panel layout vi c7e200 Em Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 100 People to People Technology E N Chapter 4 Adjustments 4 1 2 2 General self diagnosis mode level 1 Following is the menu of the general self diagnosis mode Switch Scan Test LED Head Test Motor and Clutch Tests Test Pattern Exec
42. unit s Notes 1 When replacing the engine board 71K PWB demount the EEPROM from the board and Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 151 ei People to People Technology N Chapter 6 Troubleshooting Procedures 9 Color Misalignment Is the color menu of the user menu mode Automatic Color Registration Adjustment OFF Yes Yes No Yes Yes No Make it on Recovered End TONER LOW is displayed Replenish toner Recovered End Execute the color registration test in the engine maintenance mode Procedures Enter the self diagnostic mode Level 1 of the engine maintenance mode Press Keys 0 and 4 to enter the self diagnostic mode Level 2 Press Key 1 three times to display REG ADJUST TEST Press Key 2 once to display REG ADJUST EXECUTE Press Key 3 to execute automatic color registration adjustment The motor starts rotating to adjust color registration Color registration was not adjusted that is the motor did not rotate and OK was displayed immediately Yes Some error otherthan color misalignment has occurred After recovering from the error has the color registration become normal Yes End Ra YO AAI IRDATINAI CET DICQLT ie dienlaviad A No No No No No Verify connection between the connector on Z71 PWB color registration sensor board and RSNS POWER conn
43. 0 Series Page 140 People to People Technology a Chapter 6 Troubleshooting Procedures 5 Fusing Unit Error Has the fuser error occurred immediately after power on A Yes No No No No Is the heat roller thermistor broken or short circuited See Figure 6 1 approx 190k to 980kO at room temperatures of 0 to 43 C Yes Replace the fuser unit Is the backup roller thermistor broken or short circuited See Figure 6 1 Approx 190k to 980k at room temperatures of 0 to 43 C Yes Replace the fuser unit Has the fuser unit error occurred three minutes after power on Go to A Is the heater of the fuser unit on Is it hot Yes No No No Yes Replace the engine board Replace the fuser unit Is AC voltage output between the CN1 connector pin1 and pin3 of the low voltage power unit Replace the low voltage power unit Replace the fuser unit N Heat roller thermistor Figure 6 1 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 141 People to People Technology o Chapter 6 Troubleshooting Procedures 6 Motor Fan Error Does the low voltage power supply fan run after power on No No Yes No Yes Yes Is 32V output to the fuse FU502 of the engine board 71K PWB No Is 32V output to the power connector of the engine board 71K PWB 32V Pins 7 8 9 and 10 No Replace the low voltage power u
44. 0 Series Page 56 People to People Technology AR Chapter 3 Disassembly 3 3 8 Retard Pad Assy Retard Pad Assy Spring 1 Remove the cassette 1 2 Detach the retard pad assy 2 at the same time the spring 3 becomes detached Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI ent N 3 3 9 Feed Roller and Nudger Roller 1 Remove the cassette 1 Service Guide C7000 Series Page 57 Chapter 3 Disassembly 2 Unlatch and demount the feed roller 1 3 Unlatch and demount the nudger roller 2 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series People to People Technology Page 58 o Chapter 3 Disassembly 3 3 10 Rear Cover 1 Remove the left side cover see section 3 3 12 2 Remove the four screws 2 to detach the rear cover 1 Note When attaching the rear cover take care not to allow the spring 3 to get caught in parts Copyright 1999 Okidata Division of OKI America Inc All rights reserved Page 59 Service Guide C7000 Series Chapter 3 Disassembly 1 Open the face up tray 1 in the arrow direction and disengage it at two places to detach it TEL 3 3 11 Face Up Tray Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 60 People to People Technology Chapter 3 Disassembly nn an 3 3
45. 12 Left Side Cover 1 Open the top cover 1 2 Open the front cover 2 and undo the screw 3 3 Remove the four screws 4 to detach the left side cover 5 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 61 People to People Technology Chapter 3 Disassembly mi A ae 3 3 13 Right Side Cover 1 Open the top cover 1 2 Open the front cover 2 and undo the screw 3 3 Remove the four screws 4 to detach the right side cover 5 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 62 People to People Technology CC N Chapter 3 Disassembly 3 3 14 Multi purpose Tray Assy Links Multipurpose Tray Assy Multipurpose Tray Cover Assy Links Multipurpose Tray Top Cover Multipurpose Tray Drive Gear 1 Remove the left side cover see section 3 3 12 2 Remove the right side cover see section 3 3 13 3 Remove the left plate Assy see section 3 3 22 4 Remove the three screws 1 to detach the multipurpose tray top cover 2 5 Remove the three screws 3 two of them are black and the connector to detach the multipurpose tray 4 6 Disengage A and B at both sides of the assembly to detach the multipurpose tray cover Assy 5 at the same time the links 7 become detached 7 Unhook and detach the multipurpose tray drive gear 8 Copyright 1999
46. 165 Duplex Unit Figure 8 5 166 Duplex Unit Table 8 5 167 Centronics Parallel Interface 168 B 2nd 3rd Tray Maintenance 1 Parts Replacement 169 1 1 Cover Idle Roller Assy 170 1 2 PCB 171 1 3 Feeder Drive Assy 172 2 C7000 2nd 3rd Tray Parts List 173 T Table 6 1 1 Operator Alarms 2 2 174 OKT Service Guide C7000 Series Page 1 e D People to People Technology N Chapter 0 Introduction Preface This manual describes the procedures for the maintenance of the C7000 Series of printers The document is produced for maintenance personnel use For details on the procedures for handling the C7000 Series of printers see its user documentation Notes The descriptions in this manual are subject to change without prior notice e _ In preparing the document efforts have been made to ensure that the information in it is accurate However there may be errors in the document Oki Data assumes no responsibility for any damage resulting from or claimed to be the results of those repairs adjustments or modifications to the printers which are made by users using the manual e The parts used for the printers are electrostatic sensitive and if handled improperly may be damaged It is strongly recommended that the products be maintained by Oki Data Authorized Repair Centers Oki Data Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 2 e a Gees People to
47. 2 1 Paper Loading Jam 1st Tray 133 eee 2 2 Paper Loading Jam Multi Purpose Tray 134 tai 2 3 Paper feed jam 135 gain 2 4 Paper Exit Jam 136 ssaa 2 5 Duplex Jam 137 ice 3 Paper Size Error 138 Pedidas 4 Image Drum Unit ID Up and Down Operation Error 139 T 5 Fusing Unit Error 140 sb 6 Motor Fan Error 141 6 5 3 Troubleshooting image problems 142 si 1 Light or Faded Image on Whole Page or Color 143 Misalignment on Whole Page Figure 6 2 A RA 2 Dirty Background Figure 6 2 B 144 eeneg 3 Blank Page Figure 6 2 C 145 ze 4 Vertical Belt or LIne Black or Color Belt or Black or 146 Color Line Figure 6 2 D ere 5 Vertical White Belt or Line or Uneven Color Belt or 147 Line Figure 6 2 F ee 6 Poor Fusing Ink spreads or peels when touched with 148 fingers sai 7 Defective Image of Regular Interval See Figure 6 2 E 149 ee 8 Missing Image 150 sip 9 Color Misalignment 151 pen 10 Color Different from Original One 152 intel Figure 6 3 153 7 Wiring Diagram 7 1 Resistance Check 154 7 2 Program Font ROM Location 155 8 Parts List Main Assembly Figure 8 2 156 Main Assembly Table 8 1 1 3 187 Main Assembly Table 8 1 2 3 158 Main Assembly Table 8 1 3 3 159 Top Cover Assembly Figure 8 2 160 Table of Contents Page Top Cover Assembly Table 8 2 161 Printer Unit Chassis Figure 8 3 162 Printer Unit Chassis Table 8 3 163 Paper Tray Guide Figure 8 4 164 Paper Tray Guide Table 8 4
48. 2 1 Main board CRM PWB Figure 2 2 provides the block diagram of the main control board CRM PWB 04us9 PBSLSLOAT 200 102 tt 187129 H WINIO WWEOS SUld 002 10J99UUOD PIBOg Nd vbz9L ing om es ang ans es Oe WOH ySselg x INWIO WOH NEE zez Tass SOI ALE pue 197 29 0 BIER CORY y PUE O A ect o 200 ECT aca oenen ISTLOI vesisa 19594 JoJe nbay ASZ apeg 21 m II ZHINSLELEFL AS 20UE SIS Bunsni Klak 1 2 3 4 5 6 7 8 9 CPU The CPU is PowerPC750 a 64 bit bus RISC processor which inputs an 80 MHz CLK BUS CLK and operates at 400MHz that is five times the input Secondary Cache SRAM SRAM is included as secondary cache of the CPU on the board ROM ROM is to be inserted into the three 168 pin DIMM slots The slot A is for program ROM and the slot B is for Japanese kanji fonts The slot C is not assigned RAM RAM is to be inserted into the four 168 pin DIMM slots The DIMMs must be fitted in descending labeled type No order into the slots 1 3 2 and 4 SDRAM DIMM Specifications Speed PC100 or more Capacity 64 128 256 MB Configuration Without parity Without ECC SPD information is required Number of chips contained 8 or 16 EEPROM EEPROM an 8 pin DIP package is to be inserted into the IC socket The EEPROM is of 16 Kbits for 3 3V power supply and settings for controlling the controller block ar
49. 2 1 Operator panel 99 4 1 2 2 General self diagnosis mode level 1 100 4 1 2 2 1 Entering self diagnosis mode level 1 101 nn 1 2 2 2 Exiting self diagnosis mode 102 4 1 2 3 Switch scan test 103 4 1 2 4 Motor and clutch test 104 4 1 2 5 Test printing 105 4 1 2 6 NVM initialization 106 4 1 2 7 Consumable Counter Display 107 4 1 2 8 Consumable Counter Display Continuos 108 4 1 2 9 Error Messages and their Details 109 A 1 3 CRM board adjustments 110 4 1 3 1 Short plug settings 111 4 1 3 2 Printing Menu Reports 112 4 2 Adjustments after Parts Replacement 113 4 2 1 Precautions in replacing engine controller board 114 4 2 2 Precautions in replacing EEPROM 115 4 2 3 EEPROM replacement after CRM board replacement 116 4 3 Color Balance Adjustment 117 5 Period Maintenance 5 0 Periodic Maintenance 118 5 1 Parts Replaced Periodically 119 5 2 Cleaning 120 5 3 Cleaning LED Lens Array 121 5 4 Cleaning Pickup Roller 122 Table of Contents Page 6 Troubleshooting Procedures 6 1 Before Troubleshooting 123 6 2 Checking before Troubleshooting Image Problems 124 6 3 Precautions in Troubleshooting Image Problems 125 6 4 Preparation for Troubleshooting 126 6 5 Troubleshooting 127 6 9 1 LCD messages list 128 Lul Table 6 1 1 Operator Alarms 1 2 129 6 5 2 LCD Preparation for Troubleshooting 130 meres 1 The printer does not operate properly after power on 131 er 2 Jams 132 See
50. 40866101 Control PanelAssy D o o o ia 40861501 Eject Guide ies ll 20 26 pin LED Connector A 2 8 A Copyright 1999 Okidata Division of OKI America Inc All rights reserved Page 161 OKI Service Guide C7000 Series Page 162 People to People Technology APR Chapter 8 Parts List Printer Unit Chassis Figure 8 3 gt e ESN gien i 5 D y 2 Ch Gi A EA x D AS i A i y Kaa 3 EA aw gt H S 1 A dh y 5 KR Ni A AS e EC DEI Ee MS A SEN Be x f v ba d A 4 el C n AR 2 o ER A F ES v i 4 A Es d N GAS W SH y Ge N th Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI k e Service Guide C7000 Series 3 People to People Technology N Chapter 8 Parts List Printer Unit Chassis Table 8 3 o Pane Name In Remarks sd a arreozor Drum ComtactAssy a 0 ooo o 2 40844301 Registration Roller ies DI 3 40844303 Registration Roller Assy 8 DI 4 40845401 Registration Drive Be DI 5 arrezior Registration cn I SSCS 40845601 Registration Motor Assy A Wain Gooling Fan ll 41546801 Color Registration Sensor Assy JDL 41253701 Registration Shutter Solenoid JDL 41275201 Registration Shutter W o o 41275801 Registration Shutter Spring M o 40858201 Duplex Guide Assy M o _ 40841101 Printer Unit Chassis h o o 41812801 Left Top Cover Spring Assy Mo __ 41312901 Right Top
51. 411 Magenta running short 412 Cyan 413 Black Load Papers The specified almost empty 2 Does the Toner sensor of the specified cartridge operate normally 1 No paper in MT No Remove Printed The stacker for 1 Is the stacker full Yes Papers 480 ejected papers is 2 Does the Stacker full sensor operate No Stacker Full full normally 490 No paper in cause has no the MP Tray paper or is A4 B5 etc removed Or the cassette being used for printing has no more paper Load Papers No paper in the 491 495 NO Cassette 1 2 3 paper in the Tray 4 or 5 detected A4 B5 etc Replace Belt The belt counter has reached the life value Replace Fuser The fuser counter has reached the life value Job Offset Home The Job offset assy does not operate or cannot detect the home position Running Short ofl Running short of Paper in Tray paper detected Disc Operation HDD can not be Error written 2 Does the Paper out sensor operate normally 1 No paper in the specified cassette 2 Does the Paper out sensor operate normally 1 Is the error message displayed 2 Does the error occur soon after Belt unit replacement 1 Is the error message displayed 2 Does the error occur soon after Fuser unit replacement Does the Job offset assy operate normally Does only small amount of papers approx 30 sheets or less remain Is the operating procedure correct
52. 7000 Series of printers one 1st 43 uonnjons UND DIO f Buyaney seded souenpe adeg Lis mace BuddoH ups isen Any uogeu sibsy JOSUAS BLA vodsuen sadeg 4BjSUEI Da bursny 3 5 i 2 EA i Joie Br i po arten umop ace speubis ooo uogoala adeg uopajes med eg vomejas wed adeg Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e Service Guide C7000 Series Page 11 People to People Technology IN Chapter 2 Operation 2 4 1 Electrphotographic process 1 Electrophotographic processes 2 Charging 3 Exposure 4 Developing 5 Transfer 6 Fusing 7 Cleaning waste toner area 8 Cleaning transfer belt Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 12 a e People to People Technology N Chapter 2 Operation 1 Electrophotographic processes 1 Electrophotographic processes The following is the outline of electrophotograhic process 1 Charging DC voltage is applied to the charging roller and the surface of the OPC drum is negatively and evenly charged 2 Exposure The LED head under image signals emits light to the negatively charged surface of the OPC drum The radiated portions of the drum surface attenuate in negative charge according to the intensity of the light and based on the surface potentials a latent electrostat
53. 99 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 41 e a x People to People Technology R Chapter 3 Disassembly 3 0 Precaution in Replacing Parts This section describes the procedure for replacing the parts assemblies and units in the field The replacing procedure is given for detachment To attach use the reverse procedure 3 1 Precautions in Replacing Parts 3 2 Parts layout 3 3 Replacing Parts Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 42 e ke Chapter 3 Disassembly People to People Technology n 3 1 Precaution in Replacing Parts 1 Before starting parts replacement remove the AC cable and interface cable a Removing the AC cable i Turn off 0 the power switch of the printer ii Disconnect the AC inlet plug of the AC cable from the AC receptacle iii Disconnect the AC cable and interface cable from the printer b Reconnecting the AC cable i Connect the AC cable and interface cable to the printer ii Connect the AC inlet plug to the AC receptacle iii Turn on I the power switch of the printer Disconnect Connect 2 Do not disassemble the printer if operating normally 3 Do not remove unnecessary parts try to keep disassembly to a minimum 4 Use specified service tools 5 When disassembling follow the determined sequence Otherwise parts may be damaged 6
54. 999 Okidata Division of OKI America Inc All rights reserved OKI e e Service Guide C7000 Series Page 173 E Chapter B 2nd 3rd Tray Maintenance 2 C7000 2nd 3rd Tray Parts List OKI People to People Technology cas A Table 6 1 1 Operator Alarms 2 2 Message Cause Error Description Solutions Service Call 125 Error Service Call 130 Error Service Call 131 Error 134 Error Service Call 140 Error detected Error 142 Error Service Call 150 Error 153 Error Service Call 154 Error Service Call 155 Error Service Call 160 Error 163 Error Service Call 170 Short or open Error 171 Error 174 Error 175 Error Error detected at 1 Is the error message displayed Yes the MT home 2 Does the error repeat Yes position Temperature rise 1 Is the error message displayed Yes at the LED head 2 Does the error repeat 1 Is the error message displayed Yes detected 2 Is the LED head mounted properly Yes 3 Does the error repeat Yes at appropriate Yes Yes position Fuse in the ID Is the ID unit mounted properly Yes unit has not been blown Fuse in the Belt Is the Belt unit mounted properly Yes unit has not been blown Fuse in the Fuser Is the Fuser unit mounted properly Yes unit has not been blown Error detected by 1 Is the error message displayed Yes 1 Is the error message displayed Yes No LED heat unit detected when turn
55. Cover Spring Assy h J SSCS 40841601 Entrance Sensor Actuator M __ 40841701 Entrance Sensor Actuator 2 JD 40841801 Entranoe Sensor Actuator 3 MO __ 41258801 Entrance Sensor PWB R71 ho o o o AAA A AA 41253601 Duplex Gate Solenoid Assy Jl 40842401 FuserDrive Gear A PO oo oS 40316801 Fuser DriveGear B ho oo ooo 41067201 _ Fuser DriveGear C_ SCS SiS 40323907 Fuser Enter D user Exit Roller Buig E __ Fuser Exit Roller Bushing Ry D 40842501 Fuser Exit Roller Contact JD 41073601 Eieren Assy TC 4084101 Fuser Latching Handle E ____ _ _ K PA 40841501 Fuser Latching Handle Springs 40848801 Belt Motor Assy 8 9 Page 163 33 40841401 Fuser Latching Handle R 1 brr rr 35 40847301 Main Motor Assy 37 40848501 MainFedrDiveGear A 38 40848601 Main Feeder Drive GearB DD 39 41303601 LeftPlateAssy EE Power Unit AC DC switching 115V Power Unit AC DC switching 230V 42 poo Power Unit high voltage suna dI 45 41128101 Power Supply Insulator tT rc _ ae dd dii a se de po Serew M amp 8 JT __ 49 41346301 Transfer Contact Assy JS TI 50 41469001 PowerCoolingFan IT 51i poo Screw 3x8 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 164 People to People Technology APR Chapter 8 Parts List Paper Tray Guide Figure 8 4 Copyright 1999
56. D head lenses dirty Yes No No Yes Yes Yes No Yes No No Yes No Yes Yes No No Yes Clean the LED head lens es Are the LED head Assys connected to the junction board Y71 PWB properly Connect the LED head Assy s to the junction board checking the cable connection between them Is 3 8V output to the following HEADPOW connector pins of the junction board Y71 PWB 3 8V Pins 1 to 8 Is 3 8V output to the LED heads from the junction board Y71 PWB YPOW connector pin 3 LED head Assy Yellow MPOW connector pin 3 LED head Assy Magenta CPOW connector pin 3 LED head Assy Cyan KPOW connector pin 3 LED head Assy Black No Replace the junction board Y71 PWB Replace the LED head Assy s after checking the cable connection Replace the low voltage power unit after checking the cable connection Has the problem been corrected End Is 32V output to the power connector of the engine board 71K PWB 32V Pins 7 8 9 and 10 Replace the low voltage power unit after checking the cable connection Is 32V output to the HVOLT connector pin 5 of the engine board 71K PWB Replace the engine board Replace the high voltage power unit or the belt cassette Assy after checking the cable connection Has the problem been corrected End Are 1 D terminals connected to the contact Assy properly See Figure 6 3 Connect the 1 D terminal s to the contact Assy properly Replace the WD unit s
57. Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 116 People to People Technology N Chapter 4 Adjustments 4 2 3 EEPROM replacement after CRM board replacement To replace the CRM board remove the EEPROM on the board and include the EEPROM on a newly installed board to allow a new board to inherit user defined settings and font installation information When the user s EEPROM is unusable due to its problem use the new one on the new board where the destination of the new board must be set See Section 4 1 3 CRM board adjustments for the setting procedure Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 117 People to People Technology EC n Chapter 4 Adjustments e A 4 3 Color Balance Adjustment Color balance has been adjusted appropriately when a printer is shipped from the plant However it may be out of the appropriate balance during use In such a case color balance should be modified Note Density of each color depends on each other Therefore adjustment must be repeated several times to reach the correct color balance 1 Set A4 papers in the tray specified on the operator panel 2 Press 0 several times to display COLOR MENU 3 Press 1 or 5 to display COLOR BALANCE CORRECTION PATTERN PRINT 4 Press 3 to start test printing 5 Press 1 to display COLOR BALANCE CORRECTION RESET
58. Drive Assy Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series e D People to People Technology E nN Chapter B 2nd 3rd Tray Maintenance 1 1 Cover Idle Roller Assy 1 Unscrew the four screws 1 to remove the cover side 2 and the plate cover PCB 3 2 Unscrew the two screws 4 to demount the cover idle roller Assy 5 Page 170 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series People to People Technology e Chapter B 2nd 3rd Tray Maintenance 1 2 PCB 1 Unscrew the four screws 1 to remove the plate cover PCB 2 2 Remove the connectors at seven places and the two screws 3 then demount the board 4 Page 171 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series People to People Technology e Chapter B 2nd 3rd Tray Maintenance 1 3 Feeder Drive Assy 1 Remove the four screws 1 six screws 2 and the eight screws 3 2 Remove the cover sides 4 and 5 the plate cover PCB 6 and the frame hopping Assy 7 3 Remove the E ring 8 the clutch 9 and the two screws 10 4 Unscrew the two screws 11 to remove the core 12 and the connector 13 5 Unscrew the two screws 14 then detach the motor 15 6 Unscrew the tow screws 16 to remove the connector 17 Page 172 Copyright 1
59. ON Selects between color monochrome printings Selects between hater on and off e A DUPLEX SONS Selects between duplex on and off Prints on both sides of one sheet of paper and then on the second sheet when ON is selected FUSER A value in the shaded section is initial The set values are applicable only to this test mode No writing into EEPROM is performed When the 3 key is pressed with PRINT EXECUTE on the lower display after step 2 the test printing is executed using the values designated in steps 2 and 3 Pressing the 7 key suspends the test printing e The following messages are showing at warm up and during printing p T U 44 H L P Number of Sheets Printed for Test in prints U Upper Heater Temperature Measurement Set Value in units of C L Lower Heater Temperature Measurement Set Value in units of C T Environmental Temperature Measurement in units of C H Environmental Humidity Measurement in units of e The display is changed at the press of the 3 33 33 key KTR KV YTR KV MTR KV CTR KV YTR MTR CTR and KTR mean the transfer voltage settings for colors in KV e The display is changed at the press of the 3 33 33 key KR KV YR KV MR KV CR KV YR MR CR and KR are the transfer voltage measurements for transfer roller colors in KV KR KV YR KV MR KV CR KV
60. Paper related sensors 28 2 9 2 Other sensors 29 2 6 Color Misalignment Correction 30 2 7 Transfer control Responds to Environmental Changes 31 Room Temperature and Relative Humidities 2 8 Paper Jam Detection 32 2 9 Cover Open 33 2 10 Toner Low Detection 34 2 11 Page Size Detection 35 2 12 Operation at Power on 36 2 13 Color Misalignment Detection 37 2 14 Version Read of Units Replaced Periodically 38 2 15 Life Count for Units Replaced Periodically 39 2 16 Toner Consumption Detection 40 3 Disassembly Table of Contents Page 3 0 Precaution in Replacing Parts 41 3 1 Precaution in Replacing Parts 42 3 2 Parts Layout 43 Top Cover Assy 44 Printer Unit 45 Cassette Guide Assy L R 46 Duplex Unit 47 3 3 Replacing Parts 48 3 3 1 Top Cover 49 3 3 2 LED Assy LED Assy Spring 50 3 3 3 Top Cover Unit 51 3 3 4 Control Panel Assy Control Panel Bezel LED Control 52 PWB Toner Sensors Stacker Full Sensor Control Panel Control Panel Tape Harness Eject Rollers 3 3 5 Top Cover Handle Top Cover Latch Top Cover 53 Latch Spring 3 3 6 Eject Guide Assy 54 3 3 7 Cassette Assy Front Cover Assy Front Cover Inner 55 Baffle 3 3 8 Retard Pad Assy Retard Pad Assy Spring 56 3 3 9 Feed Roller and Nudger Roller 57 9 9 10 Rear Cover 58 3 3 11 Face Up Tray 59 3 3 12 Left Side Cover 60 3 3 13 Right Side Cover 61 3 3 14 Multi purpose Tray Assy
61. Unlatch and demount the duplex guide 1 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series People to People Technology Chapter 3 Disassembly io A _ 3 3 22 Electrical Chassis Cooling Fan 1 Unscrew the screws 1 to remove the plate A 2 2 Unscrew the screws 3 to remove the shield plate B 4 3 Remove the printer engine controller PWB see section 3 3 30 4 Unscrew the screws 5 to remove the shield plate 6 5 Unscrew the screws 7 to demount the electrical chassis cooling fan 8 Page 70 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 71 People to People Technology La Chapter 3 Disassembly 3 3 23 Printer Engine Controller PWB 1 Remove the right side cover see section 3 3 13 1 2 Remove the left plate Assy see section 3 3 22 3 3 Remove the five screws 1 and all the connectors to demount the printer engine controller PWB 2 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 72 People to People Technology CC N Chapter 3 Disassembly 3 3 24 Printer Unit Chassis 1 Unscrew the two screws 1 and remove the AC inlet 2 2 Unscrew the four black screws 3 and five screws 4 to detach the printer unit chassis 5 3 Unscrew the four black screws 6 and remove the lef
62. an KPOW connector pin 3 LED head Assy Black No Replace the junction board Y71 PWB Replace the LED head Assy after checking the cable connection Replace the low voltage power unit after checking the cable connection Has the problem been corrected End Is 32V supplied to the power connector of the engine board 71K PWB 32V Pins 7 to 10 Replace the low voltage power unit after checking the cable connection Is 32V supplied to the power connector pin of the engine board 71K PWB Replace the engine board Replace the high voltage power unit or the belt cassette Assy after checking the cable connection Has the problem been corrected End Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 145 ei Chapter 6 Troubleshooting Procedures 3 Blank Page Figure 6 2 C Arethe LED head Assys connected to the junction board Y71 PWB and the engine board 71K PWB properly No Connectthe LED Assy s to the junction board Y71 PWB and the engine board 71K PWB properly checking the cable connection Yes Is 3 8V output to the following power connector pins of the junction board Y71K PWB 3 8V Pins 1t08 Yes Is 3 8V output to the following cable connector pins between the junction board Y71 PWB and the LED heads YPOW connector pin 3 LED head Assy Yellow MPOW connector pin 3 LED head Assy Magenta CPOW connector pin 3 LED hdad Assy Cyan KPOW connector
63. areas run the length of a printed page clean the LED lens array Caution Be sure to use the LED head cleaner to clean the LED lens array The LED head cleaner is packed together with the toner cartridge White belt White line Void Light area Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 122 People to People Technology E N Chapter 5 Period Maintenance 5 4 Cleaning Pickup Roller When lines run the length of a printed paper clean the pick up roller Caution Use a soft cloth so as not to damage the roller surface Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series a A People to People Technology Cc R Chapter 6 Troubleshooting Procedures 6 1 Before Troubleshooting 1 Check the basic check items covered in the user s manual 2 Obtain as much information about problems from users as you can 3 Perform inspections in conditions close to those in which problems occurred Copyright 1999 Okidata Division of OKI America Inc All rights reserved Page 123 OKI Service Guide C7000 Series e People to People Technology N Chapter 6 Troubleshooting Procedures 6 2 Checking before Troubleshooting Image Problems 1 Is the printer s operating environment correct 2 Have the consumables toner drum cartridges been properly replaced 3 Is the correct media being us
64. ce Guide C7000 Series Page 105 a LI People to People Technology IN Chapter 4 Adjustments 4 1 2 5 Test printing This self diagnostic routine is used when the internal test patterns of the PU are printed Other test patterns are stored in the controller 1 Go to the self diagnosis level 1 mode and hold the 1 and 5 keys down until TEST PRINT comes into view in the upper display the 1 key is for test item increment and the 5 key for test item decrement 2 On the lower display setting items applicable only to the test printing appear Hold the 2 and 6 keys down until a target item is displayed the 2 key is for item increment and the 6 key for item decrement When the setting for the item is not required left at its default go to step 5 3 With the press of the 3 7 the setting item and its setting are displayed on the upper and lower parts respectively Pressing the 3 key increments a setting Pressing the 7 key decrements a setting The last displayed setting is applied Repeat step 3 as necessary SWITCH SCAN 00 15H 221 3 H den PRINT EXECUTE TEST PATTERN TBD Selects one of printing patterns 1 LED Head Drive Pattern 2 Color Registration Adjust Pattern 3 Reserved CASSET Selects a paper loading end without the IDs and belt being driven Setting 3 TRAY1 TRAY2 Note When the loading end is set to NONE only the heater and drivable motors operate TRAY3 NONE
65. ce of the unit Re install the Fuser unit and turn off on the printer Replace the Fuser unit Confirm the existence of the unit Re install the Belt unit and turn off on the printer Replace the Belt unit Assy Confirm the existence of the unit Re install the ID unit and turn off on the printer Replace the ID unit Assy Confirm the life of the ID unit Replace the ID unit Normal Replace the Duplex unit or Engine board Remove the jammed paper Check the Check DUPLEX 371 Paper Jam Check DUPLEX 372 Paper Jam Open Side Cover 380 Paper Jam Open Stacker Cover 381 Paper Jam Open Stacker Cover 382 Paper Jam Open Stacked Cover 383 Paper Jam Check MP Tray 390 Paper Jam Check Tray 391 395 Paper Jam Open Stacker Cover 400 Paper Size Error Toner Low paper reverse in the Duplex unit Paper jam detected at the Duplex unit Paper jam detected during paper feed from the Duplex unit Paper jam during paper feed fro the Cassette 1 2 3 4or5 Paper jam detected between the B ID and Fuser Paper jam detected in the Fuser unit or between the Fuser and paper ejection Paper jam detected on paper entering the Duplex unit Paper jam during paper feed from the MP tray Paper jam detected between a cassette and B ID Paper in a size different 45 mm or more from the specification detected at the Printer engine Toner in one of Does misfeed occur in the D
66. diagnosis mode and press and hold the 1 and 5 keys down until SWITCH SCAN appears on the upper display the 1 key increments a test item and the 5 key decrements a test item SWITCH SCAN 2 Table 4 1 lists SCAN numbers Hold the 2 and 6 keys down until the SCAN number for a unit to be tested shows up on the upper display the 2 key increments a test item and the 6 key decrements a test item 3 In response to the press of the 3 key the test starts the SWITCH SCAN number begins blinking then the corresponding unit number any of 1 to 4 and the current status are displayed SWITCH SCAN 00 1 H 2 L 3 H 4 L Operate the units Figure 4 1 Their respective liquid crystal displays are provided Displays vary by sensor See Table 4 1 for details 4 When the 7 key is touched the SWITCH SCAN number goes back to an indication view stops blinking 5 Repeat steps 2 through 4 as required 6 To end the test press the 4 key the display is restored to the view of step 1 Cover upper swilch MT OHP transparency sensor Upper fuser center sensor Toner K sensor Entrance belt sensor Toner M sensor Toner Y sensor Toner C sensor Lower fuser center sensor Paper empty sensor SIR K alh Starker full q E ull sensor M Exil sensor V H Color registration se Q se i Color registration sei 0 EN Temperature and Ca humidity sensors Entrance cassette sensor
67. dically It is recommended that the following parts be periodically replaced as specified by users when they are not replaced the print quality is not assured and printer problems may result Parts Name Time of Replacement Condition for Adjustment after rename UE Repiacoment Replacement Toner Cartridge Time when TONER 10 000 pages are None LOW is displayed printed 1 D Unit ID Time when 20 000 pages are Perform color balance CHANGE XXX DRUM printed 3 pages per is displayed job Fuser Unit Fuser Unit Time 60 000 pages are None CHANGE FUSER printed UNIT is displayed Transfer Belt Unit Belt Unit Time when 60 000 pages are None CHANGE BELT UNIT printed is displayed Note The above periodical parts replacement is performed by users Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series People to People Technology Page 120 e Chapter 5 Period Maintenance 5 2 Cleaning Clean the inside and outside of the printer with waste and a small vacuum cleaner hand cleaner as the case may be Caution Do not touch the terminals of the image drums the LED lens array and the LED head connector Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 121 People to People Technology a Chapter 5 Period Maintenance 5 3 Cleaning LED Lens Array While white belts or lies voice light
68. e approx 40 Replace the main feed motor Is 32V output to the fuses FU2 and FU3 of the engine board Replace the low voltage power unit Replace the engine board after checking the gear engagement and cable connection Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 134 ei Chapter 6 Troubleshooting Procedures 2 2 Paper Loading Jam Multi Purpose Tray Has the paper loading jam occurred immediately after power on Yes Isthe paper jammed at the entrance cassette sensor or the entrance MT sensor Yes Remove the jammed paper No Does the entrance MT sensor lever move properly No Replace the defective sensor lever Yes Does the entrance MT sensor operate properly Operate each sensor lever to check that the sensor operates correctly on the switch scan test in the system maintenance mode or check the signals on the FSENS connector pin of the engine board 71K PWB Pin 2 Entrance MT sensor No Replace the sensor board R71 PWB after checking the signal cable connection Yes Replace the engine board after checking the signal cable connection No Has the paper loading jam occurred immediately after the paper drawing into the tray Yes Has the paper reached the entrance MT sensor Yes Goto A No Replace the multipurpose tray Assy No Is the registration motor running No Is 32V output to the fuse FU3 of the engine board No Replace the low voltage unit Yes Replac
69. e FF sensor un Ke Multipurpose tray N Paper Ejection Paper Transport Paper Ejection MT n Fi Paper exit sensor f d FA Q h da S H 3 N Misfeed from MT Entrance cassette sensor e Duplex in sensor LF A Misfeed from Cassette 2 N j eb i Duplex rear sensor Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series D e Page 33 People to People Technology ke N Chapter 2 Operation 2 9 Cover Open When the top cover of the printer is open the cover open microswitch turns off to cut the high voltage power and output of not less than 32V Atthe same time the CPU receives CVOPN signals for indicating the status of the microswitch to handle the cover open When the front cover is open the microswitch also turns off and the 32V power to the duplex unit is cut The CPU receives FCOVER signals for indicating the status of the microswitch to handle cover open Detection Circuit Detection Circuit 71K PCB 32V 3 OVOPN 2P HVOLT 16P Top cover High voltage power supply board Detection Circuit Duplex 16P Front cover io microswitch Duplex unit High voltage power supply unit Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI a Service Guide C7000 Series Page 34 People to People Technology AN Chapter 2 Operation 2 10 Toner Low Detection
70. e stored in it Flash ROM A 2 Mbyte flash ROM is surface mounted on the CRM board The flash ROM is composed of four 256 k by 16bit chips and fonts and macros can be stored in it Memory control LSI Cl A 696 pin BGA package ASIC made by NEC which is equipped with a cooling heat sink and mainly controls a CPU I F memory video data compression and decompression and a PU video I F Interface control LSI C2 A BGA package ASIC made by Toshiba which controls a PU command I F operator panel I F IDE I F Centronics I F USB I F PCI I F EEPROM and a SPD SDRAM DIMM I F IDE HDD An IDE connector is surface mounted on the board to which an IDE HDD assembled nueina Additional Board connected to PCI BUS Ethernet Board Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 8 People to People Technology APR Chapter 2 Operation 2 2 Engine Controller Board K71 PWB 28MHz Control Panel Fan control Cover frontiupper open eu A Stacker tul o Analog output MSMS60577 lt Test switch Color registration sensor adjustment Analog input Analog Input AID CON Power supply cooling Temperature variation pitch Analog input Transparencias n Analog input Various densities m Fr ye marr Byte CPU BUS o 3 Interruption by motor Interruption by UART gt K Head LF SOL Wb Y Head IF 32bit Video I F M Head E Heater control e C Head I F Fuse
71. e the engine board after checking the cable connection Yes Replace the engine board after checking the cable connection Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI e e Service Guide C7000 Series Page 135 E Chapter 6 Troubleshooting Procedures 2 3 Paper feed jam Has the paper feed jam occurred immediately after power on Yes No Yes Yes No Yes No Yes No Yes Is the paper jammed at the entrance belt sensor Yes Remove the jammed paper Does the write sensor lever move properly No Replace the write sensor lever Does the entrance belt sensor operate properly Operate the sensor lever to check the signals on the FSENS connector pin of the engine board 71K PWEB Pin 6 Entrance belt sensor No Replace the sensor board R71 PWB after checking the cable connection Check the signal cable for connection Is it connected properly No Connect the cable properly Replace the engine board Has the paper feed jam occurred immediately after the paper drawing into the tray Has the paper reached the write sensor Yes Goto A Is the registration motor running No Does the registration of the registration motor lie at the rated value approx 7 90 No Replace the registration motor Yes Replace the engine board after checking the gear engagement Replace the registration roller A or B Has the paper jam occurred during the paper loading Is the belt motor
72. ectors on 71K PWB engine board Yes End Replace Z71 PWB Recovered Yes End Replace the engine board Recovered Yes End Replace the cable connecting Z71 PWB and the engine board Recovered Yes End DYNAMICRANGE LEFT RIGHT is displayed Yes Is the color registration sensor cover stained No Yes Thesensor cover surface is not cleaned appropriately by the cleaning blade on the back of the shutter Replace the shutter and sensor cover to ensure suitable cleaning performance Does the shutter open close appropriately Yes Replace the shutter Recovered Yes End No Replace the shutter open close solenoid Recovered B Are there problems in the gears the gear Assys of the I Ds multipurpose tray belt unit or belt motor Yes Replace the damaged gear Assy s No Connect the LED head unit s to the junction board properly No Connect the boards correctly Yes Replace the LED head Assy s after checking the cable connection Has the problem been corrected Yes End No Replace the junction board after checking the cable connection Has the problem been corrected Yes End No Is the enaine board 71K PWR connected to the iunetion board Y71 PWR nronerly Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 152 ei People to People Technology N Chapter 6 Troubleshooting Procedures 10 Color Different from Original One Are the LE
73. ed Refer to the media specification 4 Are the image drum cartridges correctly installed Copyright 1999 Okidata Division of OKI America Inc All rights reserved Page 124 OKT e e Service Guide C7000 Series Page 125 People to People Technology n Chapter 6 Troubleshooting Procedures 6 3 Precautions in Troubleshooting Image Problems 1 Do not touch the surface of the OPC drum with hands or allow foreign matter to contact it 2 Do not expose the OPC drum to direct sunlight 3 Do not touch the fuser unit with hands as it is hot 4 Do not expose the image drums to light for five minutes or more at room temperature Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI e e Service Guide C7000 Series Page 126 HF Chapter 6 Troubleshooting Procedures People to People Technology y N 6 4 Preparation for Troubleshooting 1 Control panel display The failure status of the printer is provided on the LCD liquid crystal display of the operator panel Take appropriate corrective actions according to messages appeared on the LCD Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT iL Service Guide C7000 Series Page 127 People to People Technology N Chapter 6 Troubleshooting Procedures 6 5 Troubleshooting When problems occur in the printer troubleshoot them using the following procedure 6 5 1 LCD messages list A problem occurred P
74. eject the paper 3 The ejection path is switched back and forth between the route to the face up stacker and the route to the face down stacker as follows When the face up stacker opens the paper separator inclines in the direction that guides the paper to the face up stacker When the face up stacker closes the paper separator inclines in the direction that sends the paper to the face up stacker Eject rollers Fuser unit Heat rollers Face up stacker Heater motor Figure 2 10 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 26 People to People Technology N Chapter 2 Operation 6 Duplex Unit 1 When the duplex unit receives an instruction from the printer to print on both sides of a sheet of paper the solenoid opens the separator after the completion of one side printing of a sheet of paper sent from the tray The path is switched to that to the duplex unit At this time as the roller 1 turns in the direction of the arrow a the paper is retracted on the rear of the cassette 2 When fixed time has elapsed after the paper beginning passes through the duplex in sensor the rollers reverse and the roller 1 turns in the direction of the arrow b to feed the paper into the duplex unit After that the paper passes through the rollers 2 3 and 4 and ejected with the other side printed and fed again into the printer Roller 4 Roller
75. er checking the cable connection Reeplace the engine board after checking the cable connection Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI eo Service Guide C7000 Series Page 139 People to People Technology n Chapter 6 Troubleshooting Procedures 4 Image Drum Unit ID Up and Down Operation Error Tum the printer off and after a few seconds on again Are all the ID drums revolving properly during printing No Yes Yes Yes Yes Does the resistance of the ID motor lie at the rated value approx 4 00 No Replace the defective IDU motor Is 32V output to F3 and FS of the engine board No Replace the low voltage power unit Replace the engine board after checking the cable connection Do the IDU sensor terminals operate properly Replace the defective gear or sensor terminals after checking the gear engagement and the sensor terminal operation Does the ID sensor lever move properly Check the signals on the JODEN connector pin of the driver board 71K PWB Pin 12 IDU sensor Yellow Pin 2 IDU sensor Magenta Pin 4 IDU sensor Cyan Pin 14 IDU sensor Black Do all lie at 5V level or OV level No Replace the connection board N71 PWB Replace the engine board after checking the cable connection between connection board N71 PWB and the engine board 71K PWB Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C700
76. es detached 15 Detach the gear 25 and bush 26 then detach the roller 27 At the same time the mini pitch belt 27 becomes detached 16 Unscrew the screw 29 to remove the earth 30 17 Remove the E ring 31 and three screws 32 to detach the motor Assy 33 At the same time the earth 34 becomes detached 18 Detach the gear 35 and bush 36 19 Detach the gear 37 knock pin 38 and bush 39 then detach the roller 40 20 Detach the bush 41 gear 42 knock pin 43 and bush 44 then detach the roller 45 At the same time the earth s 46 and 47 become detached 21 Detach the idle roller shaft and the idle roller then detach the idle roller springs eight springs 22 Remove the cable of the duplex transport sensor Assy from the claw of the cover upper Disengage the claw then detach the sensor Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI People to People Technology ko 3 3 46 CU Assy 1 Pulling out Controller Board 1 Undo the two screws 1 2 Pull the controller board 2 out 3 Place the controller board 2 on a flat table 2 Detaching Fan 1 Remove the connector 3 2 Remove the two screws 4 3 Detach the fan 5 Service Guide C7000 Series Chapter 3 Disassembly Page 94 3 Removing the CRM Board 1 Unscrew the four screws 6 to remove the fan bracket 7 2 Unscrew the four screws 8 to remove the plate support 9
77. formed on the drum surface LED head LED head Power Charging roller unit OPC drum Paper OPC drum Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 15 amp a y People to People Technology ke nN Chapter 2 Operation 4 Developing 4 Developing By the adhesion of toner to the latent electrostatic image on the drum surface the image is changed to an image of its toner The development is processed at the contact portion between the OPC drum and the developing roller 1 The sponge roller causes toner to adhere to the developing roller The toner becomes negatively charged Developing toner blade Charging roller Sponge roller Developing roller OPC drum 2 The developing blade removes excess toner from the developing roller and a thin layer of toner remains and forms on the developing roller 3 The toner is drawn by the latent electrostatic image at the contact portion between the OPC drum and the developing roller The latent electrostatic image on the drum surface is made visible with the toner Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT du Service Guide C7000 Series Page 16 People to People Technology N Chapter 2 Operation 5 Transfer 5 Transfer The transfer roller which is made of conductive sponge presses paper against the surface of the OPC drum and brings the paper
78. fter the cover is opened and the jammed paper is removed closing the cover resumes the printing STSOP 7 Paper Size Error The entrance cassette sensor has not turned off within fixed time after its turn on Loading of multiple sheets of paper has been detected SSTOP 5 Misfeed from Duplex Paper could not be loaded from the duplex transport OPJAM 6 Transport Assembly assembly OPFEED 4 SSTOP 5 Misfeed from Paper could not be loaded from the MT OPJAM 6 un Purpose Tray OPFEED 3 SSTOP 5 AE Paper The duplex rear sensor has not turned on during the OPJAM 6 Reversing Jam paper reversing operation of the duplex unit OPFEED 2 1 0 STSOP 5 Duplex Unit The duplex in sensor has not turned on during the STSOP 5 Duplex Unit Paper The duplex front sensor has not turned on during STSOP 5 Paper Ejection Jam The paper exit sensor has not detected the end of OPJAM 2 paper within fixed time after the detection of the beginning of it The paper exit sensor has not turned off since its turn on STSOP 5 Paper Transport Jam The paper exit sensor has not turned on while paper OPJAM 1 is running on the belt STSOP 5 Loading Jam Paper has not reached the entrance belt sensor or OPJAM O the MT sensor after the completion of the hopping STSOP 4 MT Paper Empty There is no paper in the multi purpose tray OPAP 3 STSOP 4 Cassette 1 2 or 3 There is no paper in the cassette 1 2 or 3 OPAP 2 1 0 Paper Empty Entrance belt sensor Entranc
79. ge 107 CGI Chapter 4 Adjustments People to People Technology x o 4 1 2 7 Consumable Counter Display The self diagnosis is used to indicate the consumable consumption status 1 After entering the general self diagnosis mode hold the 1 and 5 keys down until CONSUMABLE STATUS appears on the upper display the 1 key is for test item increment and the 5 key for test item decrement 2 By pressing the 2 and 6 keys the consumption status of the consumables comes into view item by item the press of the 3 and 7 keys is invalid 3 Pressing the 4 key ends the test the display of step 1 is restored em Upper Display Lower Display Format Unit Detail Fuser Unit FUSER UNIT ttrt IMAGES DEC Image Shows the number of sheets fed after the installation of a new fuser unit to date Belt Unit TR BELT UNIT RR IMAGES DEC Image Shows the number of sheets fed after the installation of a new belt unit to date Black ID Unit BLACK ID UNIT RR IMAGES DEC Image Converts the number of revolutions of each color s ID unit after the installation of that unit to date into a count in letter A4 size paper sheets and shows it Yellow ID Unit YELLOW ID UNIT IMAGES DEC Image Shows the remaining amount of each color s toner eee Lie pe eee me UNIT Cyan ID Unit CYANIDUNIT IMAGES DEC image gt Black Toner BLACKTONER DE o SSS S Yellow Toner YELLOWTONER oec Je o Magenta
80. he screw 8 to remove the paper size actuator 9 6 Unscrew the screw 10 to remove the paper size sensing PWB 11 in the downward direction 7 Remove the two feet 12 8 Remove the cassette lock spring 13 then remove the cassette lock 14 9 Unscrew the two screws 15 to remove the 2nd tray connector 16 10 Unscrew the screw 17 then remove the duplex Assy ground contact 18 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 89 People to People Technology AN Chapter 3 Disassembly 3 3 41 Fuser Unit 1 Open the top cover 1 2 Push the right and left fuser levers blue 2 in the arrow direction to detach the fuser unit 3 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI e tn People to People Technology AN 3 3 42 Belt Unit 1 Open the top cover 1 Service Guide C7000 Series Page 90 Chapter 3 Disassembly 2 Remove the UD unit 3 Push the lever blue 2 in the arrow direction raise the handle blue and detach the belt unit 3 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 91 People to People Technology La Chapter 3 Disassembly 3 3 43 Duplex Unit 1 Remove the cassette Assy the front cover Assy and the front cover inner baffle 2 Unlatch the rear at the right and left and pull the du
81. hooting Procedures 3 Paper Size Error Paper Size Error Has the proper size paper used No Yes Yes No Yes No Yes No Yes No Yes No Yes Use the proper size paper Has the jam occurred at the entrance FF sensor or the paper width sensor Yes Remove the jammed paper Does the entrance FF sensor lever move properly Replace the defective sensor lever Does the entrance FF sensor operate properly Move the sensor lever to check the signals on the FSENS connector pin of the engine board 71K PWB Pin 4 Entrance FF sensor Replace the sensor board R71 PWB after checking the cable connection Does the entrance belt sensor lever move properly Replace the defective sensor lever Does the entrance belt sensor operate properly Move the sensor lever to check the sensor for proper operation through the switch scan test in the system maintenance mode Also check the signals on the FSENS connector pin of the engine board 71K PWB Pin 6 Entrance FF sensor Replace the sensor board R71 PWB after checking the cable connection Dothe paper size sensing switches on the paper size sensing board PXC PWB all operate properly Press the paper size sensing switches to check the signals on the PSIZE connector pin of the engine board Pin 3 Paper size sensor 1 Pin 4 Paper size sensor 2 Pin 5 Paper size sensor 3 Pin 6 Paper size sensor 4 Replace the paper size sensing board PXC PWB aft
82. ic image is formed on the drum surface 3 Development Negatively charged toner contacts the OPC drum and by electrostatic force adheres to the latent electrostatic image to form a clear image on the drum surface 4 Transfer Placed on the surface of the OPC drum paper is positively or opposite to the polarity of the toner charged by the transfer roller on its back to transfer the toner image to the paper 5 Cleaning The cleaning blade removes residual toner from the OPC drum after the transfer 6 Fusing The toner image on the paper is fused into place through the application of heat and pressure to it Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 13 People to People Technology AN Chapter 2 Operation 2 Charging 2 Charging Negative DC voltage is applied to the charging roller contacting the surface of the OPC drum Charging roller OPC drum Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 14 People to People Technology An Chapter 2 Operation 3 Exposure 3 Exposure The negatively charged surface of the OPC drum is radiated with light from the LED head The negative charge of the radiated portions of the drum surface attenuates in response to the intensity of the light and a latent electrostatic image responsive to the potentials of the surface is
83. ies Page 76 People to People Technology CC N Chapter 3 Disassembly 3 3 28 Fuser Exit Roller 1 Unscrew the two screws 1 to remove the duplex gate solenoid Assy 2 2 Unscrew the screw 3 to remove the fuser exit roller contact 4 3 Remove the fuser drive gear A 5 and fuser drive gear A 6 4 Unscrew the screw 7 to remove the fuser drive gear C 8 5 Unlatch and detach the fuser drive gear B 9 and fuser exit roller bush R 10 6 Unlatch and detach the fuser exit roller bush L 11 and fuser exit roller 12 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 77 People to People Technology Cc N Chapter 3 Disassembly 3 3 29 Exit Sensor Assy 1 Remove the fuser exit roller see section 3 3 28 2 Remove the screw 1 and connector to detach the red and blue exit sensor assy 2 OKI Service Guide C7000 Series Page 78 People to People Technology AR Chapter 3 Disassembly 3 3 30 Fuser Latching Handle L 1 Remove the latching handle spring 1 2 Unscrew the screw 2 to detach the fuser latching handle L 3 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 79 People to People Technology CC N Chapter 3 Disassembly 3 3 31 Belt Motor Assy 1 Remove the fuser latching handle R see section 3 3 32 2 Remove the two screw
84. ime taken until the paper beginning OFF Paper is absent reaches the sensor determines the paper length Exit sensor Detects the beginning and end of paper to determine ON paper is present the paper ejection timing OFF Paper is absent Duplex in sensor Detects the beginning of paper that enters into the ON paper is present duplex unit to determine the time taken until the OFF Paper is absent reversed rollers turn in forward direction Duplex Rear sensor Detects the beginning of reverses paper in the ON paper is present Il TTT Ore Papers absent Detects the end of reversed paper in the duplex unit ON paper is present to determine the paper ejection timing OFF Paper is absent Stacker Full sensor Detects the face down stacker full of paper ON Stacker is full OFF Stacker is empty Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 29 People to People Technology AR Chapter 2 Operation 2 5 2 Other sensors 1 Paper Empty sensor This sensor checks whether the paper cassette is empty 2 Paper Near sensor This sensor checks whether the paper cassette is near empty 3 MT Paper Empty sensor This sensor checks whether paper exists in the front feeder 4 MT Hopping switch This microswitch checks whether the front feeder table is in the up position or in the down position 5 Paper Size switch This sensor detects the size of paper in the pape
85. ing on the printer or closing the cover 1 Is the error message displayed with the D located 2 Does the error repeat circuit detected at the Fuser Thermistor H or L temperature error 2 Does the error repeat Page 174 Chapter 6 Troubleshooting Procedures Turn off on the printer Replace the MT Turn off the printer leave it for 30 mins and then turn it on again Replace the LED heat unit Verify the installation of the LED head Turn off on the printer Replace the LED head Assy Turn off on the printer Replace the Drum Assy Confirm the cable connection or replace the Engine board Confirm the cable connection or replace the Engine board Confirm the cable connection or replace the Engine board Replace Toner sensor or Assy Y71 PWB Same as the above Turn off on the printer Replace the Thermistor and turn off the printer Leave it for 30 mins Service Call 172 High temperature Error error detected at 176 Error Thermistor 1 Is the error message displayed 2 Does the error repeat Service Call 173 Low temperature Error error detected at 177 Error Thermistor 1 Is the error message displayed 2 Does the error repeat Service Call 181 Communication Error failures with an 186 Error option unit detected by Engine Printer engine cover is open 1 Is the error message displayed 2 Does the error repeat Close Cover 310 CCCC CoverOpen A4 B4 etc
86. inst the heater by the pressure springs on both sides Thermostat Thermistor Heat roller Thermostat Backup roller Thermistor Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT EUREN Service Guide C7000 Series Page 18 Seen A NET Chapter 2 Operation 7 Cleaning waste toner area 7 Cleaning Non fused residual toner on the OPC drum is scraped with the cleaning blade and collected in the waste toner area of the toner cartridge Waste toner area Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 19 People to People Technology A Chapter 2 Operation 8 Cleaning transfer belt 8 Cleaning Residual toner on the transfer belt is scraped with the cleaning blade and collected in the waste toner box of the transfer belt unit Cleaning blade Waste toner box Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 20 People to People Technology La Chapter 2 Operation 2 4 2 Paper running process Figure 2 5 shows the traveling of paper in the C7000 Series of printers Registration roller Assy B Unit x 4 Face down stacker Fuser Hopping roller Head x 4 gt lt A De R S Eject roller SC d Multipurpose tray Registration roller Assy A 4 Low voltage Sn a power supply US SO Cleaning blade Ze TT NK o pa TTT
87. inter unit chassis see section 3 3 24 2 Remove the four screws 1 to detach the left plate Assy 2 3 Remove the screw 3 to detach the contact Assy 4 Page 83 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series People to People Technology e Chapter 3 Disassembly 3 3 36 Low Voltage Power Supply 1 Remove the printer unit chassis see section 3 3 24 2 Unhook the connector 1 3 Unscrew the screw 2 to remove the earth cable 3 4 Unscrew the six screws 4 to detach the low voltage power supply 5 Page 84 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 85 People to People Technology Chapter 3 Disassembly A of 3 3 37 High Voltage Power Supply 1 Remove the contact Assy see section 3 3 35 2 Unhook the connector of the high voltage power supply 2 3 Remove the two screws 1 to detach the high voltage power supply 2 and the tape harness 3 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series People to People Technology e Chapter 3 Disassembly 3 3 38 Main Feed Assy 1 Remove the printer unit chassis see section 3 3 24 2 Remove the low voltage power supply and high voltage power supply see sections 3 3 36 and 3 3 37 3 Unscrew the five screws 1 to remove
88. ist OKI e People to People Technology N Main Assembly Table 8 1 3 3 No Pane J Name hy Remarks sd 34 41977401 fasse A 35 passo PCB Assy e PO poo DT erme oo a edi S EI CO OSS lr Tx ai a 41286901 Plate Shield Sid CS o SoS a4 41278601 Guide Dall 5 41276701 Die Bai ll ae 41410207 Motor Fan O h o oOo ar 41467401 Plate FG Gent _______ Sid SCS a8 41254601 Plate Blank O p o oOo C Sora 50 4172380 sew TA o o Copyright 1999 Okidata Division of OKI America Inc All rights reserved Page 159 OKI Service Guide C7000 Series Page 160 People to People Technology APR Chapter 8 Parts List Top Cover Assembly Figure 8 2 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT ia Service Guide C7000 Series People to People Technology AN Chapter 8 Parts List Top Cover Assembly Table 8 2 No Pane Name TO Remarke a faoss TopGwer TA 2 41072401 LEDAssy 1200d i200d 3 40861001 LEDAssy Spring b __ 4 1257001 LED Control Dam 5 40865404 StackerFulSensor JI e 41316501 Top Cover Inner Frame Kt H o o 7 41809608 LEDHamessM_____t_ __ 8 41809604 LEDHamesst_____T_ o o 9 41309602 LED Hamess Y io 41309601 LEDHamessk__________T_ o o 11 41593101 1EDContolPWB Tape Harness DO __ AAA le cd fd CC TT fia 40376700 eano O O O o o o e S 15 40860601 Toner Semsor ll me
89. lculating a HASH value 3 RAM check a RAMs are by type Out of specification RAM is judged as an error b The order of mounted RAMs is checked Out of standard order is judged as an error c Each slot s RAM is checked by read after write operation 4 EEPROM check Specific data stored at a fixed address of EEPROM is checked 5 Flash ROM check The flash ROM format is checked Unformatted ROM is formatted after read after write checking 6 Option unit check Before the printer goes into the operation mode the presence of the option units e g the HDD NIC option trays and duplex unit is checked Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 37 People to People Technology N Chapter 2 Operation 2 13 Color Misalignment Detection Reflection type optical sensors for detecting color misalignment Z71 PCB are mounted on the belt at the right and left ends respectively in front of the toner scraping cleaning blade which is at the back of the belt unit The color misalignment detection pattern is printed on the belt at each of the right and left ends and by reading the patterns by the reflection type optical sensors the misalignment amounts are measured with respect to Black to determine correction values Then the misalignment in main scanning sub scanning and slanting directions is corrected These operations are performed at power on at cover close and
90. logy N Chapter 4 Adjustments 4 2 1 Precautions in replacing engine controller board When replacing the engine controller board 71K PWB remove the EEPROM from the board and mount it on a new board for errors other than those of engine EEPROM When the SERVICE CALL XX an engine EEPROM error message is displayed on the operator panel the EEPROM must be replaced with new one In this case perform the operation described in Section 4 2 2 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 115 People to People Technology CC n Chapter 4 Adjustments 4 2 2 Precautions in replacing EEPROM When the EEPROM is not removed from the board and placed on the new board at the time of engine controller board 71K PWB replacement or when the EEPROM is replaced with new one the version read fuse cut function shown in Section 2 14 is disabled The printer must be switched from the factory mode to the shipping mode using the following setting procedure Changing the setting using operator panel 1 N DO oO A WU N Remove the main controller board While holding the 1 and 4 keys down turn the power on to enter the engine maintenance mode level 1 With ENGINE DIAG MODE XX XX on the display press the 2 and 4 keys to enter the engine maintenance mode level 3 Press the 1 and 5 keys until LOCAL PARAMETER SET appears on the upper display Pre
91. m 1st tray Paper Loading Jam Multi purpose Tray Paper Feed Jam Paper Exit Jam 2 4 3 DUPLEX Jam SI Dest O OOOO 6 Fan Motor Er Note When replacing the engine board 71K PWB uninstall the EEPROM chip on the board and install it on the new board 2 CU Assy troubleshooting The CU Assy does not operate Is the error message displayed NO YES YES YES Follow the message procedure for handling the error Are the upper and lower lines of LCD on the operator panel black NO Check the power supply voltage 3 3V 5V 3 3V Vacant ICOP 20pin SV Vacant PANEL Spin NO Replace the power supply voltage YES Check the PU board and the operator panel board Is ROM DIMM A mounted properly NO Insert the program IDMM into the ROM DIMM A properly When the printer is not recovered from the error replace the CU board Replace the CU board Demount the EEPROM from the board and mount it on a new board Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI e e Service Guide C7000 Series Page 131 People to People Technology n Chapter 6 Troubleshooting Procedures 1 The printer does not operate properly after power on Turn the printer off and on again Is ee we on the LCD about for one second No Yes No Yes Yes No No Is the AC cable connected properly No Connect the AC cable correctly Is 5V output to the panel connector OPTN connector on the engine
92. needs replacement Use a genuine RAM DIMM Reinstall the concerned RAM DIMM Replace the RAM DIMM Replace the CRM board The EEPROM needs replacement Use a genuine RAM DIMM Reinstall the concerned RAM DIMM Replace the RAM DIMM Replace the CRM board The EEPROM needs replacement Use a genuine RAM DIMM Reinstall the concerned RAM DIMM Replace the RAM DIMM Replace the CRM board The EEPROM needs replacement Use a genuine RAM DIMM Re install the concerned RAM DIMM Replace the RAM DIMM Replace the CRM board The EEPROM needs replacement Replace the EEPROM Settings of the user must be restored on the new Replace the CRM board The EEPROM needs replacement Service Call U Flash Error Does the error message appear again Yes Replace the CRM 041 Error On CU board board The EEPROM Flash ROM Error needs replacement Service Call Operator Panel Does the error message appear again Yes See the flowchart for 050 Error Error the problems with no LCD message displayed Service Call CU Fan Error Is the on Cu board connector Connect the connector 051 Error On CU board connected properly Can the printer properly Replace the CPU Cooling Fan recover from the error by replacing the No fan Replace the CRM Problem fan board The EEPROM needs replacement Service Call Network Comm Is the network board installed properly No Install the network 063 Error Error CU NIC Can the printer
93. nit after checking the cable connection Yes Replace the engine board Has the low voltage power supply fan replaced Yes End Replace the low voltage power supply fan Does the engine board fan rotate after power on Is 32V output to the fuse FU502 of the engine board 71K PWB No Is 32V output to the power connector of the engine board 71K PWB 32V Pins 7 8 9 and 10 No Replace the low voltage power after checking the cable connection Yes Replace the engine board Replace the fan of the engine board End Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT kai Service Guide C7000 Series Page 142 Seen A AR Chapter 6 Troubleshooting Procedures 6 5 3 Troubleshooting image problems When the printout images are not satisfactory follow the troubleshooting steps listed below Printout problem Flowchart No Light or faded image on whole page or color misalignment on whole page Figure 6 2 A Vertical belt or line black or color belt or black or color line 4 Figure 6 2 D Vertical white belt or line or uneven color belt or line Figure 6 2 F Poor fusing ink spreads or peels when touched with fingers Defective image of regular interval Figure 6 2 E Color misalignment Color different from original one Figure 6 3 A Light or faded image on B Dirty background C Blank whole page fee D Vertical black belt or line E Defective image of regular F Vertical white belt
94. nnector 4 When assembling attach the LED connector 4 to the LED head and insert the flat cable into it Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 51 People to People Technology Chapter 3 Disassembly A nf 3 3 3 Top Cover Unit 1 Remove the top cover see section 3 3 1 2 Remove the rear cover see section 3 3 10 3 Remove the left side cover see section 3 3 12 4 Remove the right side cover see section 3 3 13 5 Remove the shield plates A and B see section 3 3 22 and unplug the connector to separate the top cover 6 Disengage the top cover unit 1 at two places to detach it Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 52 People to People Technology Cc N Chapter 3 Disassembly 3 3 4 Control Panel Assy Control Panel Bezel LED Control PWB Toner Sensors Stacker Full Sensor Control Panel Control Panel Tape Harness Eject Rollers 1 Detach the control panel bezel placed in the control panel Assy 2 2 Remove the screw 1 to demount the control panel Assy 2 3 Detach the control panel tape harness 14 4 Remove the top cover unit see section 3 3 3 5 Unscrew the four screws 3 to remove the earth plate 4 6 Remove the two screws 5 unhook all the connectors 6 and demount the LED control PWB 7 7 Remove the screw
95. ower unit Replace the low voltage power unit Does the resistance of the heat roller thermistor lie at the rated voltage See Figure 6 1 Approx 190k to 980k at room temperatures of 0 to 43 C Replace the fuser unit Does the resistance of the backup roller thermistor lie at the rated voltage See Figure 6 1 Approx 190k to 980kQ at room temperatures of 0 to 43 C Replace the fuser unit Does the fuser temperature agree with the designated one Check the fuser temperature on the LCD in the engine maintenance mode Heat Roller Upper 145 to 155 C 5FH to 6BH Backup Roller Lower 125 to 135 C 48H to 53H Replace the fuser unit Assy Replace the fuser unit Assy 1 When replacing the engine board 71K PWB demount the EEPROM from the board and mount it on a new board 2 When the EEPROM is not replaced see Section 4 2 2 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 149 People to People Technology AR Chapter 6 Troubleshooting Procedures 7 Defective Image of Regular Interval See Figure 6 2 E Note The life counters of the I D units fuser unit and belt cassette unit are automatically reset upon replacement of the units respectively Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI e e Service Guide C7000 Series Page 150 E Chapter 6 Troubleshooting Procedures 8 Missing Image A
96. plex unit 1 toward the front Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 92 People to People Technology AN Chapter 3 Disassembly 3 3 44 Guide Rails L and R 1 Remove the duplex unit see section 3 3 43 2 Remove the six screws 1 to detach the guide rails L 2 and R 3 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 93 People to People Technology CC N Chapter 3 Disassembly 3 3 45 Duplex Transport Assembly 1 Turn over the duplex transport Assy 2 Unscrew the three screws 1 and five screws 2 to detach the plate 3 3 Unplug the connector and detach the mold Assy 4 4 Detach the two actuators 5 5 Unscrew the screws 6 and 7 to remove the earth 8 6 Unhook the connector and disengage the two claws to detach PCB MOP 9 7 Unplug the cable and warping the claw detach the transport sensor 8 Unscrew the two screws to detach the cord duplex connector Assy 9 Unscrew the screw 10 to remove the earth 11 10 Unscrew the screw to remove the earth 13 11 Unscrew the screw 14 to remove the earth 15 12 Detach the bush 16 gear 17 and bush 18 then detach the roller 19 13 Unscrew the screw 20 to remove the earth 21 14 Detach the gear 22 and bush 23 At the same time the mini pitch belt 24 becom
97. pyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 22 People to People Technology nN Chapter 2 Operation 2 Paper Feed from Multi Purpose Tray MT 1 The release lever usually pushes down the hopping plate to a position that turns microswitch on Figure 2 7 a 2 The running of the motor in the a direction drives the MT feed roller and turns the cam The cam pushes the release lever and the hopping plate picks up paper sent out by the MT feed roller Figure 2 7 b where the registration roller Assy B does not move because its one way clutch gear 1 idles 3 After the paper beginning turns the entrance sensor on the paper is forwarded a fixed length The paper stops when its beginning reaches the registration roller Assy B 4 At the same time the cam pushes down the hopping plate The release lever that has been placed in its original position by the spring locks the hopping plate Figure 2 7 c 5 After the completion of the paper feed operation the registration motor runs in the arrow direction b to drive the registration roller Assy B where the one way clutch gear 2 does not allow the MT feed roller to move One way clutch gear 2 MT feed roller Entrance sensor Entrance belt sensor e Hopper plate A Feed roller Microswitch Figure 2 7 a Figure2 7 b Figure 2 7 c Copyright 1999 Okidata Division of OKI America Inc All rights re
98. r Save Mode enabled disabled The shift time to enable the Power Save mode can be changed according to the POWER SAVE SHIFT TIME item of SYSTEM CONFIG MENU Implements fine adjustment of BLACK printing on normal paper when unclear characters or spots are often found on print results With dispersed or snowed printing in the part at high density decrease the value With unclear printing increase the value Implements fine adjustment of COLOR printing on normal paper when unclear characters or spots are often found on the print result With dispersed or snowed printing in the part at high density decrease the value With unclear printing increase the value Implements fine adjustment of BLACK printing on Transparency when unclear characters or spots are often found on the print result With dispersed or snowed printing in the part at high density decrease the value With unclear printing increase the value Implements fine adjustment of COLOR printing on Transparency when unclear characters or spots are often found on the print result With dispersed or snowed printing in the part at high density decrease the value With unclear printing increase the value Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 98 People to People Technology C N Chapter 4 Adjustments 4 1 2 Engine maintenance mode The engine maintenance mode includes three modes levels 1
99. r cassette 6 ID Up Down sensor one for each of colors Y M C and K This sensor checks whether the ID unit is in the up position or in the down position 7 Toner K Y M and C sensors These sensors checks whether the waste toner cartridges are full by measuring the time interval between regular opening movements of toner sensors respective levers 8 Temperature sensor See section 2 7 Transfer Control Responds to Environmental Changes 9 Humidity sensor See section 2 7 Transfer Control Responds to Environmental Changes 10 OHP sensor This sensor detects the presence or the absence of transparencies 11 Alignment sensor Upon correction of color misalignment this sensor reads the alignment pattern printed at the right and left ends of the transfer belt see section 2 13 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 30 People to People Technology Chapter 2 Operation 2 6 Color Misalignment Correction Each of the C7000 Series of printers is equipped with 4 ID units and LED heads which can cause color misalignment This color misalignment is automatically corrected as follows 1 Color alignment to be corrected 1 Color misalignment in X axis direction Positional error caused by LED head 2 Color misalignment in slanting direction Positional error caused by LED head 3 Color misalignment in Y axis direction Positional error caused by I D unit
100. r needs replacement Service Call CU ROM Hash Is the program ROM DIMM installed Re install the program 020 Error Check Error 1 properly ROM DIMM Can the printer recover from the error Replace the program by replacing the program ROM DIMM ROM DIMM Replace the CRM board The EEPROM needs replacement Service Call CU Slot 1 DIMM Is the concerned RAM DIMM installed Reinstall the concerned 030 Error Ram Check Error properly Can the printer recover from RAM DIMM the error by replacing the RAMM Replace the RAM DIMM DIMM Replace the CRM board The EEPROM needs replacement Service Call CU Slot2 DIMM Is the concerned RAM DIMM installed Reinstall the concerned 031 Error RAM Check Error properly RAM DIMM Can the printer recover from the error Replace the RAM by replacing the RAMM DIMM DIMM Replace the CRM board The EEPROM needs replacement Service Call CU Slot3 DIMM Is the concerned RAM DIMM installed Reinstall the concerned 032 Error RAM Check Error properly RAM DIMM Can the printer recover from the error Replace the RAM by replacing the RAMM DIMM DIMM Replace the CRM board The EEPROM needs replacement Service Call CU Slot4 DIMM Is the concerned RAM DIMM installed No Reinstall the concerned 033 Error RAM Check Error properly Yes RAM DIMM Can the printer recover from the error No Replace the RAM by replacing the RAMM DIMM DIMM Service Call 034 Error Service Call 035 Error Service Call 036
101. ransport media 6 SRAM This SRAM 62256LFP 7LL is used as working memory of the CPU Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT us Service Guide C7000 Series Page 9 CES Chapter 2 Operation People to People Technology a 2 3 Power Units There are a low voltage power unit consists of an AC filter circuit low voltage power circuit and heater driver circuit and a high voltage power unit organizes a high voltage power circuit 1 Low voltage power supply circuit This circuit generates the following voltages Output voltage Ile CULSI LED head Logic circuit power supply PU CPU 34 V Motor drive voltage and power supply voltage for high voltage power supply OP Amp High voltage power supply 2 High voltage power supply circuit This circuit generates the following voltages of not less than 34V which are required for electrophotographic process according to control sequences from the controller board A 900V to 1 4KV Voltage to charging roller Po 100 to 400V 300V Voltage to developing roller PY 100V to 700V OKv to 7KV Voltage to transfer roller Copyright 1999 Okidata Division of OKI America Inc All rights reserved Y M C and K Voltage to toner supply roller OKT Service Guide C7000 Series Page 10 a People to People Technology ke N Chapter 2 Operation 2 4 Mechanical Processes Figure 2 4 shows the mechanical processes of the C
102. rd Y71 PWB after checking the cable connection Has the problem been corrected Yes End No Is the engine board 71K PWB connected to the junction board Y71 PWB properly No Connect the engine board to the junction board properly Yes Replace the engine board 71K PWB after checking the cable connection Has the problem been corrected Yes End No Are the I D terminals connected to the contact Assy properly See Figure 6 3 No Connect the I D terminal s to the contact Assy properly Yes Replace the D unit s Notes 1 When replacing the engine board 71K PWB demount the EEPROM from the board and mount it on a new board 2 When the EEPROM is not replaced see Section 4 2 2 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 147 People to People Technology N Chapter 6 Troubleshooting Procedures 5 Vertical White Belt or Line or Uneven Color Belt or Line Figure 6 2 F Are the LED heads dirty Yes No No Yes Yes No Yes No No Yes Yes No No Yes Notes Clean the dirty LED headis Are the LED head Assys connected to the junction board Y71 PWB properly Connect the LED head Assy s to the junction board Y71 PWB properly Replace the LED head s after checking the cable connection Has the problem been corrected End Replace the junction board Y71 PWB after checking the cable connection Has the problem been co
103. re LED heads dirty Yes No No Yes Yes Yes No Yes No No Yes No Yes Yes No No Yes Clean the LED head s Are the LED head Assys connected to the junction board Y71 PWB properly Connect the LED head Assy s to the board checking the cable connection between the LED head s and the junction board Is 3 8V output to the following HEADPOW connector pins of the junction board Y71 PWB 3 8V Pins 1 to 8 Is 3 3V output to the LED head Assys from the junction board Y71 PWB YPOW connector pin 3 LED head Assy Yellow MPOW connector pin 3 LED head Assy Magenta CPOW connector pin LED head Assy Cyan KPOW connector pin 3 LED head Assy Black No Replace the junction board Y71 PWB Replace the LED head Assy s after checking the cable connection Replace the low voltage power unit after checking the cable connection Has the problem been corrected End Is 32V output to the power connector of the engine board 71K PWB 32V Pins 7 to 10 Replace the low voltage power unit after checking the cable connection Is 32V output to the HVOLT connector pin 5 of the engine board 71K PWB Replace the engine board Replace the high voltage power unit or the belt cassette Assy after checking the cable connection Has the problem been corrected End Are the D terminals connected to the contact Assy properly See Figure 6 3 Connect the I D terminal s to the contact Assy properly Replace the I D
104. recover from the error board properly H W I F Problem by replacing the network board Replace the network board Replace the CRM board The EEPROM needs replacement Service Call CANT_HAPPEN Is it recovered by turning the printer No Replace the CRM 070 Error PS F W Problem off on board The EEPROM Detection needs replacement Service Call Engine Is the CU Assy installed properly Can No Install the CU Assy 072 Error Communication the printer recover from the error by properly Replace the Error PU CU I F replacing the CRM board CRM board The Error EEPROM needs replacement Service Call Video Overrun Is the CU Assy installed properly Install the CU Assy 073 Error Detect Can the printer recover from the error properly 075 Error by replacing the CRM board Replace the CRM board The EEPROM needs replacement Service Call Error detected at Does the error repeat Replace the PU board 100 101 Engine ROM Replace the engine Error Checksum when control board 71K turned on Service Call Error detected at Does the error repeat Replace the engine 102 Error Engine RAM control board 71K Read Write when turned on Service Call Error detected at Does the error repeat Yes Replace the engine 103 Error Engine SRAM control board 71K Service Call 104 Error Service Call 105 Error Service Call 106 Error Service Call 120 Error 122 Error Service Call 123 Error Service Call 124 Error
105. roblem shown by Perform troubleshooting Perform close troubleshooting LCD message using the LCD message list gt using the troubleshooting see Section 6 5 1 flowchart see Section 6 5 2 Image problem or Perform close troubleshooting Problem not shown using the troubleshooting by LCD message flowchart see Section 6 5 3 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 128 People to People Technology C Nn Chapter 6 Troubleshooting Procedures 6 5 1 LCD messages list When detects unrecoverable errors the printer provides the following service call error message Service Call nnn Error Note nnn is an error code While a service call appears an error code accompanied by its error information is shown on the lower LCD Error codes their meanings and actions to be taken are listed in Table 6 1 1 Table 6 1 1 Operator Alarms 1 2 Table 6 1 1 Operator Alarms 2 2 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e Service Guide C7000 Series Page 129 People to People Technology IN Chapter 6 Troubleshooting Procedures Table 6 1 1 Operator Alarms 1 2 Message Cause Error Descripton J Solutions Service Call CPU Exception Is the error message displayed again Yes Turn the printer off on 001 Error Is the error message displayed again Replace the CRM board The EEPROM 011 Erro
106. rrected End Is the engine board 71K PWB connected to the junction board properly Connect the engine board to the junction board properly Replace the engine board 71K PWB after checking the cable connection Has the problem been corrected End Are the I D terminals connected to the contact Assy properly See Figure 6 3 Connect the I D terminal s to the contact Assy properly Replace the I D unit s 1 When replacing the engine board 71K PWB demount the EEPROM from the board and mount it on a new board 2 When the EEPROM is not replaced see Section 4 2 2 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 148 People to People Technology Cc N Chapter 6 Troubleshooting Procedures 6 Poor Fusing Ink spreads or peels when touched with fingers Is proper paper used No Yes No Yes Yes No No Yes No Yes No Yes No Yes No Yes Notes Use proper paper Is the contact of the fuser unit connected properly Connect the contact of the fuser unit properly Is the roller of the fuser unit dirty Replace the fuser unit Assy Is the MEDIA TYPE menu 1 selected correctly Light 60 g m Medium Light 67 5 g m Medium 75 g m Medium Heavy 90g m Heavy 105 g m Ultra Heavy 120 g m Transparency Select the MEDIA TYPE correctly Is AC voltage output between the CN connector pin1 and pin 3 of the low voltage p
107. rvice Guide C7000 Series Page 66 e 2 Chapter 3 Di mbl People to People Technology N apte sassembly 3 3 18 Registration Clutch and Registration Motor Assy 1 Remove the left side cover see section 3 3 12 1 2 Remove the left plate Assy see section 3 3 22 3 Remove the connector and the E ring 1 then remove the two screws 3 the earth 4 and the registration clutch 2 4 4 Remove the connector to remove the two screws 5 and the registration motor Assy 6 Copyright 1999 Okidata Division of OKI America Inc All rights reserved Service Guide C7000 Series Page 67 Chapter 3 Disassembly e OKI 414 People to People Technology AR 3 3 19 Main Cooling Fan 1 Unhook the connector 1 and remove the screw 2 and the cooling fan 3 Note When attaching the cooling fan observe its correct orientation Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT uw Service Guide C7000 Series Page 68 People to People Technology fa Chapter 3 Disassembly 3 3 20 Color Registration Sensor Assy 1 Remove the two screws 1 and the two connectors to demount the color registration sensor assy 2 2 Remove the earth plate B 3 Connectors Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 69 People to People Technology EE Chapter 3 Disassembly AS APA 3 3 21 Duplex Guide Assy 1
108. ry 60 000 pages Transfer Belt Assy Equivalent of 60 000 pages 3 pages job 12 Temperatures and Relative Humidities Temperature Temperature conditions Fahrenheit Celsius Remas SSCS Operating 50 to 89 6 10 to 32 17 to 27 Celsius Temperatures to assure full color print quality Non operating Storage 1 year max Delivery 1 month max Delivery 1 month max Humidity Humidity condition PT Fahrenheit Celsius Remarks Operating 20 to 80 50 to 70 for assurance of full color printout quality 25 10 to 90 10t090 zs TI 10t090 40 __ 13 Printer Life 600 000 pages on a A4 size basis or five years Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 6 People to People Technology Chapter 2 Operation 2 0 Operation The C7000 Series of printers tandem color electrophotographic page printers adopt technologies such as an LED array OPC dry single component non magnetic developing roller transfer and heat compression fusing A black writing printing method by shedding light on print areas is used low oc ewe coc cnn wc cesconecege nos DL i cau H D ae Hl 4 ti ab au i i GA d LEO Een E ww ew io Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 7 People to People Technology AR Chapter 2 Operation
109. s 1 to detach the two connectors 2 3 Detach the belt motor Assy 3 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 80 People to People Technology CC N Chapter 3 Disassembly 3 3 32 Fuser Latching Handle R 1 Remove the printer unit chassis see section 3 3 24 2 Remove the E ring 1 3 Remove the fuser latching handle spring 2 to detach the fuser latching handle R 3 OKT Service Guide C7000 Series Page 81 People to People Technology e Chapter 3 Disassembly 3 3 33 Main Motor Assy 1 Remove the belt motor assy see section 3 3 31 2 Remove all the connectors 3 Remove the four screws 1 to detach the main motor assy 2 LE pe PEG NA L i Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series People to People Technology e Chapter 3 Disassembly 3 3 34 Main Feeder Drive Motor 1 Remove the two screws 1 to detach the main feeder drive motor 2 2 Unscrew the screw 3 to remove the main feeder drive motor bracket 4 3 Remove the main feeder drive motor gears A 5 and B 6 Page 82 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series People to People Technology e Chapter 3 Disassembly 3 3 35 Contact Assy Left Plate Assy 1 Remove the pr
110. served OKT du Service Guide C7000 Series Page 23 EE Chapter 2 Operation People to People Technology Gi 3 Transport Belt 1 The running of the transport belt motor in the arrow direction a drives the transport belt The belt unit sits with one transport roller immediately below each color s drum and the transport belt between them By the application of a fixed voltage the transport belt and the transport roller feed paper on the transport belt into the fuser unit transferring a toner image on each color s drum Drum Transport belt 5 aw Se Transport transfer roller Transport transfer belt motor Figure 2 8 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 24 People to People Technology N Chapter 2 Operation 4 Driving and Up and Down Movements of I D Unit 1 The I D unit driving and up and down movements are effected by a single pulse motor The running of the main motor in the arrow direction a turns the lever 1 to the left Then the lever 2 that was lifted by the lever 1 lowers to move down the I D unit After the up down sensor is turned off Figure 2 9 d specified downward pulsing places the UD unit in its lowest position or equivalently printing position Figures 2 9 a and 2 9 c The drum gear engages with the driving gear and starts revolving to transfer an image on the drum to running paper where the one wa
111. seteasy h oOo oOo a 414384071 Retard Pad ies 5 I oT CN E 6 4086480 TN CN L__ 7 41974802 Face Up Stackerasy ho Ooo ooo o 8 40864401 _LeftSide Cover M o o 8 40864501 Right Side Cover T_T 10 40862001 Multi Purpose Tray Assy ll 11 40866301 Multi Purpose Tray Cover Asy DI C II is 40325101 Mult Purpose Tray Drive Gear ho J o oOo Ta 40962701 Mult Purpose Tray Top Gover M sl ot OO ER EE dio di iii di 19 40197101 Electrical Chassis Cooling Fan TI 20 40864901 CRUBasketAssy ll 21 41275701 Upper Cover Open Switch fT 22 41439401 Retard Pad Assy Springs fT as Sum EXI E a4 TENIS PAS o 25 Screw M2x8 2 26 EEPROM EE E C EEE NN 28 Sen CET LI ao Sum a Cl Page 157 31 41303901 Belt Unit 1 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 158 ei People to People Technology N Chapter 8 Parts List Main Assembly Table 8 1 2 3 No Pane Name Ten Remale 32 41304105 image Drum Yelo D 180406 Image Drum Magenta Cid oo Luna Image Drum yan 130408 Image Drum Black DD iP o 33 41204206 Toner Yelo 41804206 Toner Magenta ll 41304207 Tomer Cyan 41804208 Toner Black Cd SSS Copyright 1999 Okidata Division of OKI America Inc All rights reserved Service Guide C7000 Series Chapter 8 Parts L
112. ss the 2 and 6 keys until FACTORY WORKING MODE appears While FACTORY WORKING MODE is being displayed use the 3 and 7 keys to select a setting value Select SHIPPING MODE fuse cut enabled press the 3 and 7 keys in combination Then the mode name stops blinking and the set value is registered The life information on the belt toner IDs etc is cleared due to replacement of the EEPROM Take note that an error occurs in the each unit s life count until the unit is replaced Following is counts cleared after the replacement of the EEPROM Cim ont Description of Count Fuser Fuser Life A value in letter paper sheets converted from the number of sheets fed after the installation of a new fuser unit Transfer Belt Transfer Belt Life A value in letter paper sheets converted from the number of sheets fed after the installation of a new belt unit Black Imaging Drum Each Imaging Drum Life A value in letter paper sheets converted from Cyan Imaging Drum the installation of a new ID unit Magenta Imaging Drum Yellow Imaging Drum Black Toner Toner Consumption The number of dots printed Cyan Toner Magenta Toner Yellow Toner Total Sheets Feed Printer Life The total number of page printed IS A o Black Impressions Total number of Pages The number of pages printed after the Cyan Impressions Printed Magenta Impressions Yellow Impressions installation of a new ID unit Copyright 1999 Okidata
113. t top cover spring Assy 7 4 Unscrew the four black screws 8 and remove the right top cover spring Assy 9 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 73 People to People Technology CC N Chapter 3 Disassembly 3 3 25 Entrance Cassette Sensor Actuator 1 Remove the printer unit chassis see section 3 3 24 2 Turn over the main chassis 3 Remove the two clamps with needlenose pliers to detach the entrance cassette sensor actuator 1 Main chassis rved Inc All rights rese of OKI America Copyright 1999 Okidata Division OKI Service Guide C7000 Series Page 74 People to People Technology Chapter 3 Disassembly 3 3 26 Entrance Sensor PWB 1 Remove the registration roller assb B see section 3 3 17 2 Remove the two screws 10 to detach the entrance sensor PWB 2 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series People to People Technology e Chapter 3 Disassembly 3 3 27 Entrance MT Sensor Actuator and Entrance Belt Sensor Actuator 1 Remove the entrance sensor PWB R71 see section 3 3 26 2 Unlatch and detach the entrance MT sensor actuator 1 3 Unlatch and detach the entrance belt actuator 2 Page 75 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Ser
114. ta Division of OKI America Inc All rights reserved OKI e e Service Guide C7000 Series Page 137 E Chapter 6 Troubleshooting Procedures 2 5 Duplex Jam Has the paper feed jam occurred immediately after power on No No Yes No Yes Yes Yes Yes No Yes Does the paper exist in the duplex unit Yes Remove the jammad paper Do the levers of the duplex in rear and front sensors move properly No Replace the defective sensor lever Do the duplex in rear and front sensors move properly Check that each sensor s level is at the one measured under the paperless condition through the switch scan test in the system maintenance mode No Replace the defective sensor after checking the cable connection Check the signal cable connection Is it connected properly No Connect the cable properly Replace the duplex controller board V71 PWB Has the paper jam occurred immediately after the paper drawing into the unit Has the paper reached the duplex rear sensor Yes Goto A Is the duplex motor running No Does the resistance of the heat motor lie at the rated value approx 6 70 No Replace the duplex motor Yes Replace the duplex board V71 PWB after checking the gear engagement Replace the registration roller A or B Replace the duplex unit Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI e e Service Guide C7000 Series Page 138 E Chapter 6 Troubles
115. the board for maintenance its destination must be set using the system maintenance mode Placing Printer in System Maintenance Mode Not on view of users 1 While holding the 2 and 6 keys down turn the power on 2 Continue to press the 3 and 7 keys to select a value to be set and press SELECT to fix the value Set Values and Destinations SetValue oDA Jom L n m TJPoEM omma 0EML Japan OEM LETTER inch A4 millimeter A4 milimeter Ad milimeter J Model Name Setting The CU program automatically determines and switches between following printer specifications LED head width LED head resolution presence or absence of Japanese fonts Heisei fonts Morisawa fonts po TL Kaos DT Without Kanji fonts LED Head Width Five Morisawa fonts ODA OEL ASP 600 dpi ML30100 OKT C7200 po 1200 dpi OKI C7400 600 dpi ML30200 OKI C9200 EE ML30500 OKI C9400 EEPROM Initialization To initialize the EEPROM enter the maintenance mode and select the EEPROM RESET item after the general start up 4 1 3 1 Short plug settings 4 1 3 2 Printings singly using controller equipped printer Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 111 e apter justments People to People Technology e Ch 4 Adj 4 1 3 1 Short plug settings The CRM board has five short plugs that can be set as follows Short Plug WE1 3 5 and 7 Sets flash ROM DIMM to connect
116. the lower plate 2 4 Unscrew the four screws 3 to detach the main feed Assy 4 5 Unhook and remove the main feed drive gear 5 Page 86 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 87 People to People Technology Cc N Chapter 3 Disassembly 3 3 39 Cassette Left Guide Assy 1 Remove the printer unit chassis see section 3 3 24 2 Remove the main feed Assy see section 3 3 38 3 Remove the three screws 1 to detach the left cassette guide Assy 2 Atthe same time the earth plate 3 becomes detached 4 Remove the cassette lift spring 4 then remove the plastic slide 5 the cassette lift arm L 6 and the plastic roller 7 5 Remove the two feet 8 6 Remove the cassette lock spring 9 then remove the cassette lock 10 Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT ee Service Guide C7000 Series Page 88 People to People Technology Cc N Chapter 3 Disassembly 3 3 40 Cassette Right Guide Assy 1 Remove the printer unit chassis see section 3 3 24 2 Remove the main feed Assy see section 3 3 38 3 Remove the five screws 1 to detach the right cassette guide Assy 2 Atthe same time the earth plate 3 becomes detached 4 Remove the cassette lift spring 4 then detach the plastic slide 5 the cassette lift arm L 6 and the plastic roller 7 5 Unscrew t
117. uplex E 1 Does misfeed occur in the specified cassette 1 Is a paper jammed between the Y ID and Fuser 2 Is the load on the Fuser unit normal 1 Is a paper jammed in the Fuser unit or between Y ID and Fuser unit 2 Is the Paper eject switch working normally 1 Is paper jammed at the entrance of the Duplex unit or in the unit 1 Does misfeed occur around the MP Tray 1 Is a paper jammed around the cassette or between B ID and cassette 2 Does the Paper entry switch operate normally 1 Is the paper in a custom size 2 Is the paper in the standard size 1 Is the specified toner cartridge Is a paper jammed in the Duplex Yes unit No Yes No Yes Duplex unit or replace it Remove the paper jam Check the Duplex unit or replace it Remove the misfed paper and close the cover Check the Duplex unit or replace it Remove the jammed paper and install the cassette Check the cassette 1 2 3 4 or 5 or replace it Remove the jammed paper Replace the Fuser unit Remove the jammed paper Replace the Fuser unit Remove the jammed paper and close Check the Duplex unit or replace it Remove the misfed paper and close the cover Check the MP Tray or replace it Remove the jammed paper Replace the Paper entry switch No action required Adjust the Paper size guide of the cassette Replace the Paper size board Replace it with a new 410 Yellow the four colors is
118. ution NVM Initialization Consumable Counter Display Consumable Counter Display Continuous 4 1 2 2 1 Entering self diagnosis mode level 1 4 1 2 2 2 Exiting self diagnosis mode Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 101 People to People Technology Chapter 4 Adjustments A 4 1 2 2 1 Entering self diagnosis mode level 1 1 Detach the main controller board 2 While holding the 1 11 11 and 4 44 44 keys down at the same time turn the power on to enter this mode ENGINE DIAG MODE 3 ENGINE DIAG MODE XX XX appears in the upper display XX XX shows the version of ROM 4 Go to each self diagnosis step by using the 1 11 11 and 5 55 55 keys pressing 1 11 11 and 5 55 55 keys rotates the menu items Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI e e Service Guide C7000 Series Page 102 People to People Technology C N Chapter 4 Adjustments 4 1 2 2 2 Exiting self diagnosis mode 1 While ENGINE DIAG MODE XX XX is displayed press the 0 key or turn the power off and after ten seconds on again Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI ee Service Guide C7000 Series Page 103 People to People Technology N Chapter 4 Adjustments 4 1 2 3 Switch scan test This self diagnosis is used when the input sensor and the switch are checked 1 Enter the general
119. ve been printed after toner low had been detected When the toner full condition is detected 10 consecutive times toner low is removed When the toner sensor remains unchanged for more than 15 cycles of 2 3 seconds the toner sensor alarm is activated The toner sensor does not perform the detection while the drum motor is not running Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 35 CES Chapter 2 Operation People to People Technology pai A 2 11 Page Size Detection Via the cam moves jointly with the paper guide of the paper cassette the four tab pieces are driven according to the set position of the paper guide Upon installation of the paper cassette the microswitch detects the condition of the tab pieces and the paper size is recognized STATE OF MICROSWITCHES sw a sw Papersize o etter H Executive bi e __ewe iI_ amp _ to ee It 1 beg 14 H 1 flegi lA i Me li dee Be PA bz gt G Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT Service Guide C7000 Series Page 36 People to People Technology Chapter 2 Operation eee AER 2 12 Operation at Power on 2 12 1 Self diagnostic test 1 Initial test The followings are automatically performed at power on a ROM check b RAM check c EEPROM check d Flash ROM check 2 ROM check ROM is checked by ca
120. vision of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 168 G Chapter A Centronics Parallel Interface People to People Technology Si Centronics Parallel Interface 1 Connector e Printer side 36 pin receptacle single port Type 57RE 40360 830B D29A made by Daiichi Denshi or equivalent e Cable side 36 pin plug Type 57 30360 made by Daiichi Denshi or equivalent Plug 552274 1 AMP 552073 1 AMP or equivalent 2 Cable e Cable length 6 ft 1 8 m max A Shielded cable composed of twisted pair wires is recommended for noise prevention Note Cable is not supplied with the printer 3 Table of Parallel I F Signals Pin No o lo Io Ion pa Im o 11 12 13 14 15 16 17 18 19 Signal name DATA STROBE DATA BIT 1 DATA BIT 2 DATA BIT 3 DATA BIT 4 DATA BIT 5 DATA BIT 6 DATA BIT 7 DATA BIT 8 ACKNOWLEDGE BUSY PAPER END SELECT Auto Feed OV CHASSIS GROUND 5V OV Signal ground INPUT PRIME FAULT UN Signal direction PR PR PR PR PR PR PR PR PR PR Functions Parallel data sampling strobe Parallel input data Completion of data input or end of functioning During print processing or during alarm End of paper Select state ON LINE Request to change Mode Not used Signal ground Chassis ground 50 mA max Signal ground Initializing signal End of paper or during
121. vision of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 155 People to People Technology AR Chapter 7 Wiring Diagram 7 2 Program Font ROM Location 1 Printer Engine Controller PWB 71K PWB 5 IT on Is im He A S a S 2 Main Controller PWB sua pue webos 104 POS PIO x E ES in EJ Es SR en di E S Note The option SDRAM DIMMs must be inserted in descending order of the parenthesized type No appeared on the label of each DIMM into the slots 1 3 2 and 4 see the user documentation for details 3 LED Control PWB Y71 PWB STUCK POWER me Lee o PANEL H L o F LUTCH RSENS INSENS O u 5 Control Panel PWB X71 PWB 6 N71 PWB JODEN 7 Entrance Sensor PWB R71 PWB O INSNS2 INSNS1 O Te e FSNS Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI Service Guide C7000 Series Page 156 People to People Technology APR Chapter 8 Parts List Main Assembly Figure 8 2 Figure 8 1 1 3 Figure 8 1 2 3 Figure 8 1 3 3 Canvrinht 1000 Okidata Mivieinn nf OKI Amarira Inc All rinhte racarvad OKT e b Service Guide C7000 Series People to People Technology AN Chapter 8 Parts List Main Assembly Table 8 1 1 3 No Pare Name SSS hy Remarks sd a 40864601 _FrontGoverAssy A 0 ooo o o o 2 41042501 FonCovermnerBae DI 3 40866701 Cas
122. y 2 3 Paper feed jam 2 4 Paper exit jam 2 5 Duplex Jam Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKI e e Service Guide C7000 Series Page 133 E Chapter 6 Troubleshooting Procedures 2 1 Paper Loading Jam 1st Tray Has the paper loading jam occurred immediately after power on Yes Yes No Yes No No Yes No No Yes No Yes Is the paper jammed at the entrance cassette sensor or the entrance MT sensor Yes Remove the jammed paper Does the sensor lever entrance cassette sensor entrance MT sensor move properly No Replace the defective sensor lever Does the sensor entrance cassette sensor entrance MT sensor operate properly Operate each sensor lever to check signals on the FSENS connector pin of the engine board 71K PWB Pin 4 Entrance cassette sensor Pin 2 Entrance MT sensor No Replace the sensor board R71 PWB after checking the signal cable connection Check the signal cable connection or replace the engine board Has the paper loading jam occurred immediately after the paper drawing into the tray Has the paper reached the entrance cassette sensor or the entrance MT sensor Yes Goto A Replace the feed roller or the paper separation frame Assy of the paper cassette Is the main feed motor running Replace the feed roller or the paper separation frame Assy of the paper cassette Does the resistance of the main motor lie at the rated valu
123. y gear idles upon placement of the lever in its lowest position 2 With the running of the main motor in the arrow direction b the lever 1 pushes up the I D unit via the lever 2 After the up down sensor is activated Figure 2 9 d the lever 1 lifts the I D unit to a specified level and stops to keep space to an extent between the drum and the transport belt Figures 2 9 c and 2 9 e The drum gear is not engaged with the driving gear and does not revolve 3 When the two pins of the up down sensor are pushed up by the I D unit and touches and electrically connected to the plate above the pins the sensor recognizes the on state When the two pins are pushed down by the I D unit and separated and insulated from the plate the sensor recognizes the off state The installation of the I D unit can also be verified by recognizing the off state of the up down sensor 1 D unit Lever 2 Figure 2 9 a Figure 2 9 b Figure 2 9 c Figure 2 9 d az N Copyright 1999 Okidata Division of OKI America Inc All rights reserved OKT e e Service Guide C7000 Series Page 25 People to People Technology E N Chapter 2 Operation 5 Fuser Unit and Paper Ejection 1 A single pulse motor drives the fuser unit and the eject rollers In response to the running of the heat motor in the arrow direction a the heat roller turns This roller fuses a toner image to paper by heat and pressure 2 Atthe same time the four eject rollers move to

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