FW750/760 (Insert)
Contents
1. Name Function Index N Motors Main Drives all mechanical components except the 30 fans DC Motor Exhaust Fan Removes the ozone built up around the drum 5 section to the ozone filter DC Motor Original Feed Drives the original feed motor dc motor 45 A252 only Magnetic Clutches Registration Drives the registration rollers 30 Toner Supply Turns on to supply toner to the development unit 31 Solenoids Pick off Pawl Moves the pick off pawls against the drum 6 Switches Main Supplies power to the copier 17 Original amp Paper Cuts ac power when the original or paper feed 18 Feed Safety unit is opened Fusing Exit Safety Cuts ac power when the fusing exit unit is 12 opened Sensors Door Open Indicates Door Open in the operation panel and 29 prohibits the key operation Toner Density Detects the density of toner in the developer 26 Original Registration Detects when the original lead edge passes at the 4 front of the exposure glass Light Detects the intensity of the exposure lamp output 27 Entrance Feed Detects when copy paper is inserted jam 24 detector Registration Detects when copy paper arrives at the 25 registration rollers jam detector Exit Detects jams through the fusing exit unit 7 Original Entrance Detects the original length and the original jam 43 A252 only Original Rear Detects the original jam 44 A252 only Exit Cover Open Indicate2. LE c X N C Drive Board TB202 TB201 A252M500 WMF Service Remarks for 120 V Version Make sure that the harness is connected to the ac drive board as shown correctly 1 Set the power supply cord harness hot line black wire yellow connector to TB201 on ac drive board Set the power supply cord harness neutral line white wire white connector to TB202 on ac drive board 4 16 15 April 1998 OPTICS 5 REPLACEMENT AND ADJUSTMENT 5 2 OPTICS A D A252R500 WMF pP Se o Er o on amp s as og s ad A252R501 WMF 5 2 1 ORIGINAL FEED UNIT REMOVAL A252 ONLY Remove the left and right upper covers Remove the upper original guide A Push the projections B into the holes C of the rear side of the original feed unit as shown and remove the operation panel D 1 screw and 2 connectors Open the original feed unit E and unhook the stoppers F at both ends 5 Turn the original feed unit and two bushings G at both ends 1 4 of a turn and remove 5 1 OPTICS 15 April 1998 A252R510 WMF A252R502 WMF 5 2 2 EXPOSURE GLASS REMOVAL A252 ONLY Remove the original feed unit Remove the exposure glass bracket A 1 screw Remove the exposure glass stoppers B 2 screws Fe ee N Remove the exposure glass C by sliding it out to the right side and lifting up the left side as shown NOTE Make sure that the edge cut side D of the exposure glass is towards
3. Avoid placing the machine in an area filled with corrosive gases Avoid any area higher than 2 000 m 6 500 ft above sea level Place the machine on a strong and level base Avoid any area where the machine may be subjected to frequent strong vibration 3 1 INSTALLATION REQUIREMENTS 3 1 2 MINIMUM SPACE REQUIREMENTS Back 600 mm Back 1 000 mm Front 1 000 mm 39 in Back 600 mm 24 in Right 600 mm 24 in Left 600mm 24 in AN gt 3 1 3 MACHINE LEVEL 1 Front to back Within 5 mm 0 2 of level 2 Right to left Within 5 mm 0 2 of level A2521505 WMF Make sure that the machine is level using a carpenter s level 3 2 15 April 1998 15 April 1998 INSTALLATION REQUIREMENTS 3 1 4 POWER SOURCE 1 Input Voltage Level 120 V 60 Hz More than 12 A for U S A version 220 240 V 50 60 Hz More than 7 A for European version 2 Permissible Voltage 10 Fluctuation 3 Do not set anything on the power cord NOTE 1 Make sure the plug is firmly inserted in the outlet 2 Avoid multi wiring c i T n o 3 3 INSTALLATION PROCEDURE 15 April 1998 3 2 INSTALLATION PROCEDURE 3 2 1 COPIER Accessory Check Check the accessories and their quantities according to the following list A252 copier Original GG a tone toe dote btt ooi Seta debt Hite bloat 6 pcs Operating Instruction Holder ssssss 1 pc A251 copier Guide M
4. Dual component dry toner system Cartridge system 750 g toner cartridge 1 860 A1 or D copies per cartridge 6 original Negative Direct toner density detection by induction sensor Development bias control exposure control Dual wire ac corona and pick off pawls Cleaning blade Manual feed roll feeder optional Heat and pressure type teflon upper and silicone rubber lower rollers Nichrome wire lamp 115 V 1 100 W 230 V 1 100 W 13 codes displayed in copy counter 1 1 SPECIFICATIONS 15 April 1998 Power Source 115 V 60 Hz 12A 220 V 50 Hz 7A 230 V 50 Hz 7A 240 V 50 Hz 7A Power Consumption Maximum 1 4 kW Warm up 1 2 kW Ready 0 04 to 1 2 kW Copy cycle 1 4 kW Dimensions W x D x H A251 1 080 x 570 x 490 mm 42 1 x 22 2 x 19 1 A252 1 080 x 623 x 480 mm 42 1 x 24 6 x 18 9 Weight A251 79 kg 174 0 Ib A252 80 kg 176 2 Ib Optional Equipment and Machine Configuration Configuration m Main frame Optional equipment Addon equipment Roll feeder A571 06 07 Table A714 05 A251 copier Roll cutting rail 4570 06 Side guides A569 06 Roll feeder A571 06 07 Table A836 00 A252 copier Copy tray A836 10 Table A836 00 Side guide A569 06 NOTE 1 Roll cutting rail cannot be installed on the A252 copier 2 Key counter cannot be installed on these copiers Other Optional Equipment e Paper Spool e Drum anti condensation
5. insertion of the original The setting change from 0 to 1 makes the first copy faster and 1 to 1 CPM increases If the emergency stop key is pressed while the original is being transported to the scanning start position from the original insertion it is necessary to check for paper left between the copier and roll feeder Whichever setting is selected the first copy and 1 to 1 CPM are within specification Trailing edge is detected Original insertion Original Transport Mode Select whether the original is transported from the original table to the scanning start position directly or whether the original is returned to the scanning start position after the trailing edge of the original passes through the original registration sensor A252 copier only The default setting 0 is effective for usage of curled originals If the setting is changed from 0 to 1 perform the synchro cut length auto adjustment SP 35 36 Original is transported directly to the start position Original is returned to the start position after the original passes through the original registration sensor Fusing Temperature Recovery Setting Determines how the machine recovers when the fusing temperature becomes lower than the target value during repeat copy operation when selecting mode 8 highest temperature mode A252 copier only 4 8 No recovery The machine simply continues copying ignoring the f
6. og s ad A252R512 WMF NOTE 1 Handle the new wire by the ends only Oil from your hands may cause uneven charging of the drum 2 Do not stretch or bend the corona wires 3 Do not rub the corona wires with rough material sand paper etc as this will damage the corona wire 4 Do not use any solvent to clean the wire as this will cause uneven charging of the drum Preparation 1 Remove the T amp S corona unit 2 Remove the paper guides A and endblock covers B T amp S CORONA UNIT 15 April 1998 Separation Corona Wire Replacement Remove the separation corona wire C 2 Hook one end of the new separation corona wire on the terminal D of the right endblock 3 Hook the center part of the separation corona wire on the spring E of the left endblock Set the wire on the slots F 5 While pushing the spring in the direction of the arrow hook the other end G of the separation corona wire on the terminal of the right endblock 6 Make sure the wire is set on the slots F Transfer Corona Wire Replacement 1 Remove the transfer corona wire H 2 Install the new transfer corona wire 5 10 15 April 1998 COPY QUALITY ADJUSTMENT 5 8 COPY QUALITY ADJUSTMENT 5 8 4 REGISTRATION ADJUSTMENT When Registration is not within the adjustment standard Purpose To maintain proper registration Adjustment 0 3 mm 0 0 12 Standard Perform SP 5 SP 29 A252 rear original feed
7. 75 0 70 0 65 0 60 0 55 0 50 0 44 0 42 0 34 0 22 0 17 0 11 0 9 6 9 80 0 75 0 70 0 65 0 60 0 55 0 50 0 48 0 44 0 42 0 36 0 34 0 24 0 22 0 18 0 17 0 12 0 11 0 9 6 10 80 0 77 5 75 0 72 5 70 0 67 5 65 0 62 5 60 0 57 5 55 0 52 5 50 0 47 5 45 0 42 5 40 0 37 5 35 0 32 5 30 0 27 5 25 0 22 5 20 0 17 5 15 0 12 5 10 0 9 6 11 80 0 77 5 75 0 72 5 70 0 67 5 65 0 62 5 60 0 57 5 55 0 52 5 50 0 48 0 42 0 36 0 34 0 24 0 22 0 18 0 17 0 12 0 11 0 9 6 xN 4 13 JAM CODE LIST 15 April 1998 80 0 77 5 75 0 72 5 70 0 67 5 65 0 62 5 60 0 57 5 55 0 52 5 50 0 48 0 42 0 36 0 24 0 18 0 12 0 9 6 80 0 77 5 75 0 72 5 70 0 67 5 65 0 62 5 60 0 57 5 55 0 52 5 50 0 44 0 42 0 34 0 22 0 17 0 11 0 9 6 80 0 78 0 76 0 74 0 72 0 70 0 68 0 66 0 64 0 62 0 60 0 58 0 56 0 54 0 52 0 50 0 48 0 46 0 44 0 42 0 40 0 38 0 36 0 34 0 32 0 30 0 28 0 26 0 24 0 22 0 20 0 18 0 16 0 14 0 12 0 10 0 9 6 80 0 72 0 60 0 48 0 36 0 24 0 12 0 9 6 80 0 78 0 72 0 66 0 60 0 50 0 54 0 48 0 42 0 36 0 30 0 24 0 18 0 12 0 9 6 80 0 78 0 75 0 72 0 69 0 66 0 63 0 60 0 57 0 54 0 51 0 48 0 45 0 42 0 39 0 36 0 33 0 30 0 27 0 24 0 21 0 18 0 15 0 12 0 9 6 80 0 72 0 64 0 57 3 48 0 46 8 42 0 40 6 36 0 34 0 33 1 28 7 24 0 23 4 22 0 20 3 18 0 17 0 1
8. Counter SP76 shown on the decal attached inside pended Counter s ote1 the upper right cover SP77 Please refer to page 4 14 for the Developer default settings for each destination Initialization Number When No 10 to 26 is selected SP80 Toner Counter SP78 Toner End Number SP81 Toner Near End Number SP82 Counter for toner density step Vete Clear data No 1 to 9 and 53 8 SC Counter SP90 to 91 9 Jam Counter SP85 to 86 10 Change the settings to the Japan version Note1 This counter is not used for the toner density step control described on page 2 16 in the A163 manual Note2 For the toner density step control this counter counts down from 150 m to 0 m after the developer initialization When the developer initialization is done this counter is set to 150 and after 150 m of copies the counter stays at 0 If this counter is cleared the counter is set to 0 4 4 15 April 1998 Mode No Function SERVICE TOOLS Data 4 5 Change the settings to the U S A version Change the settings to the Europe version Change the settings to the Asia version Charge the settings to the Hoechst version Change the settings to the Regma version Change the settings to the K E version Factory use Not Used Not Used Clear all the memory and change the settings to the Japanese version Clear all the memory
9. E of the original the roll paper feed motor turns on and paper feeding starts When the trailing edge of the original reaches the original feed start position 26 mm ahead of the original registration sensor F the original feed motor stops to wait for the copy paper The registration clutch is activated after paper feed begins The copy paper is fed to the registration roller G and the registration clutch turns off when the copy paper reaches 15 mm ahead of the registration sensor H The voltage is applied to the charge corona At the appropriate time the original feed motor rotates 50 mm s in opposite direction and the original is delivered to the exposure glass The registration clutch and roll paper feed motor turn on again after the trailing edge of the original passes the original entrance sensor The paper feed resumes and the copy paper is transported to the drum I To measure the original length for synchro cutting the copier CPU measures the time from when the original registration sensor detects the leading edge of the original until the original entrance sensor detects the trailing edge of the original delivering the original to appropriate start position The copy paper length is measured by counting the number of steps as the roll paper feed motor stepper motor turns Just before the cut length of the copy paper is fed the speed of the roll paper feed motor is doubled A paper buckle forms at the trailing edge of the co
10. How Change the registration roller start timing by SP 5 and or SP 29 1 Make several copies by using the manual feed or roll feeder and check the registration 2 Adjust the registration using SP 5 and or SP 29 if the registration is not within the adjustment standard z T ae S Er o on LU e oy cc 5 11 15 April 1998 SERVICE CALL CONDITION 6 TROUBLESHOOTING 6 2 SERVICE CALL CONDITION The following service conditions are newly added as the A251 and A252 copiers For other SC conditions refer to the A163 copier for details To clear SC E 15 access SP38 and change the data from 1 to 0 6 2 12 SC CODE E 14 ZERO CROSS SIGNAL DETECTION ABNORMAL Definition The zero cross signal is not detected within 0 5 second after the main switch is turned on Points to check e Main board e AC Drive board 6 2 13 SC CODE E 15 MAIN SWITCH ABNORMAL U S A VERSION ONLY Definition The main switch does not turn off within 0 45 second after sending reset signal a 30 oo e o Points to check e Main switch e Main board BLOWN FUSE TABLE 15 April 1998 6 3 BLOWN FUSE TABLE 6 3 1 POWER SUPPLY UNIT Europe Version Specification Symptom 250 V 5A No power 250V6 3A Flourescent lamp does not light Black copy 250 V 6 3 A No indication Beeper sound 250 V 6 3 A E 10 is indicated U S A Version Fuse No Specif
11. after the leading edge of the copy paper enters the fusing unit To compensate for this the speed of the original feed motor is corrected from the leading edge to 183 mm A252 copier only Registration Adjust the paper registration for the rear 0 Standard Adjustment for the original feed A252 only 9 9 0 5 9 9 mm Rear Feed If the setting of SP 74 is 1 this setting is Advance Delay 29 used for the paper registration for the front original feed as well as the rear original feed In this case this adjustment is added to the SP 5 adjustment Synchro cut Adjusts the original cut length in Synchro 9 9 0 5 9 9 Length Auto Adjustment 297 mm Cut mode at 297 mm standard length Insert the 297 mm length original five times this number displayed on the copy number indicator can be changed 1 to 10 If the actual original length is different from the standard length input the following value in the cut length indicator before inserting the original Actual Length Standard Length Then the machine automatically calculates the correction value The data is overwritten on SP 38 1 step 0 1 mm 4 6 15 April 1998 Mode No Function SERVICE TOOLS Data Synchro cut Length Auto Adjustment 1 189 mm Adjusts the original cut length in Synchro Cut mode at 1189 mm Insert the 1189 mm length original five times this number displayed on the copy number indicator can be changed 1
12. and change the settings to the U S A version Clear all the memory and change the settings to the Europe version Clear all the memory and change the settings to the Asia version Clear all the memory and change the settings to the Hoechst version Clear all the memory and change the settings to the Regma version Clear all the memory and change the settings to the K E version Factory use Not Used Not Used Clear all the memory SERVICE TOOLS 15 April 1998 Mode No Function Data Total Counter Unit Selects the unit in which the total counter 0 1 yard Setting counts up by 1 1m 2 100 inches 2 3 50 inches 4 A1 length 594 mm 5 Sheet Any size 6 1 foot Registration Adjusts the paper registration 0 Standard 5 Adjustment 99 lt 0 gt 59 9mm Advance Delay Toner Supply Selects the periods for supplying toner after 0 60s 23 Periods in Toner clearing the toner end condition 1 70s End Condition 2 80s 3 90s Original Feed Adjusts the speed of the original feed motor 50 Faster lt 0 50 24 Motor Speed A252 copier only Slower Adjustment 0 025 step 27 Factory Use Only Length Size The fusing roller s speed is slightly higher 100 10 100 Magnification than the drum speed Shorter Longer Compensation on The speed of the copy paper transport will 2 596 42 596 28 Leading Edge slightly increase
13. d e Ld DR m mo EN A A A d i x A 4j A ER x EA d L Nv 15mm J Original Rear Roller l K Original Rear Sensor 4 C O ES Bur Ly E ae A252D500 WMF A252D501 WMF In this machine A252 copier first the leading edge A of the original is inserted into the original table and the original is delivered to the appropriate start position Then the original is switched back while it is being scanned Therefore the original is scanned from the trailing edge to the leading edge When an original is placed on the original table it activates the original entrance sensor B The main motor starts rotating and the quenching lamp development bias and PTL begin Then the exposure lamp turns on To ensure correct original feeding especially for a thin original the original is returned toward the operator side 300 ms before the original feed Thus the original will be fed evenly by each roller on the original entrance roller C 4 seconds after the original entrance sensor is activated the original feed motor starts rotating 200 mm s to turn the original entrance rollers C The original is delivered to the original feed start position D The 4 second delay allows time for the operator to align the trailing edge non operator side against the first set of the rollers to prevent skewing 2 2 15 April 1998 EXPOSURE When the original entrance sensor is turn off by the trailing edge
14. heater Specifications are subject to change without notice 15 April 1998 PAPER PATH 1 2 PAPER PATH c o c LJ o M c A251 copier A252 copier amp e C Fa AAs 7777 E NE OA A252V500 PCX A252V504 WMF A Original Path A251 copier B Paper from the manual feed C Paper from the roller feed D Paper exit E Original Path from Rear Feeder F Original Path A252 copier Switching back MECHANICAL COMPONENT 15 April 1998 1 4 MECHANICAL COMPONENT 21 22 23 24 25 1 2 20 19 18 d S a Yay Ned F JZ 17 Ie OT i ey 2S LLS 16 as LX 15 fo iD loo i l i 10 14 b 11 13 z 12 ooo pue THE gt 9 7 77 77 A252V502 PCX 1 1st Original Feed Roller 14 Roll Feeder 2 1st Press Rollers 15 Paper Registration Rollers 3 Copy Tray 16 Development Unit 4 Exit Rollers 17 Toner Cartridge 5 Fusing Exit Rollers 18 Manual Feed Table 6 Hot Roller 19 Charge Corona Unit 7 Pressure Roller 20 2nd Original Feed Roller 8 Ga
15. measured A251 copier only Original Feed Out Select the time to when the original is Waiting Time automatically fed out after it has been set on Setting the original table in the manual feed mode A252 copier only Original Feed Start Selects the time to when the original feed Time Setting roller starts rotating after the original entrance sensor or original rear sensor for the rear feed is actuated A252 copier only OnahRwONM OAThRWN ORD 4 1 SERVICE TOOLS Mode No Function 15 April 1998 Data Synchro cut Length Adjustment Adjusts the cut length in the semi synchro cut mode A251 copier Adjusts the cut length in the synchro cut preset cut and variable cut modes A252 copier The setting can be changed by a key operation 25 Shorter 0 25 Longer 1 mm step Fixed Paper Size Pattern Setting 42 0 size is added to the following modes in the inch mode Refer to the A163 copier manual and page 4 13 of this manual for details 0 1 2 3 4 7 8 9 11 12 13 and 18 Not Used Semi synchro cut Length Adjustment Adjusts the cut length in the semi synchro cut mode A251 copier only 10 Shorter 0 gt 10 Longer 0 1 step Main Motor Speed Adjustment Jam code numbers have been changed from those used in the A163 copier If the main motor speed is incorrect rJ98 or rJ99 will be indicated when a long copy is ma
16. the rear side in Synchro cut mode If 1 is selected in this mode an original can be inserted from the rear side even if Synchro cut mode is selected This mode cannot be used with the trailing edge margin function In this mode the copy will be 194 mm longer than the original A252 copier only 4 7 0 Normal 1 Synchro cut Rear Feed Mode SERVICE TOOLS Mode No Function 15 April 1998 Data Cut Length Display Mode In semi synchro cut mode the machine stores the 1st original cut length and displays it in the paper length counter In this case the paper cut mode will be automatically changed to the Preset Variable cut mode It is not necessary to press the cut key at the trailing edge of the original from the 2nd copy paper Before the 2nd original is inserted in the original table the cut length in the cut length counter can be changed with the keys within the range of the semi synchro cut 410 mm 2 000 16 5 80 0 0 Non Length Display 1 Length Display Original Feed Motor Returning Speed Setting Selects the speed of the original feed motor in returning original mode A slower speed may be effective for the thinner original 200 mm s 150 mm s 100 mm s Roll Feeder Start Timing Selects the Roll Feeder start timing just after the original entrance sensor detects the trailing edge of the original or just after the original entrance sensor detects the
17. to 10 If the actual original length is different from the standard length input the following value in the cut length indicator before inserting the original Actual Length Standard Length Then the machine automatically calculates the correction value The data is overwritten on SP 39 50 0 5 50 1 step 0 1 mm Not Used Synchro cut Length Manual Adjustment 297 mm Adjusts the synchro cut length when a 297 mm original is used Increasing the number will shorten the paper cut length 9 9 0 5 9 9 1 step 0 1 mm This value is over written when SP 35 is performed Synchro cut Length Manual Adjustment 1 189 mm Adjusts the synchro cut length when a 1 189 mm original is used Increasing the number will shorten the paper cut length 50 0 0 50 1 step 0 1 mm This value is over written when SP 36 is performed Light Sensor Voltage Display Factory use Displays the real time light sensor output voltage In this mode the PTL main motor QL and the bias voltage for non image areas can be turned on and off using the Copy Media key Translucent paper ON Translucent Film OFF Even if the SP mode is canceled the voltage is displayed during the stand by condition or copy cycling To release this condition turn the main switch off and on Fd X XX Fd Light Sensor Voltage Synchro cut Rear Feed Mode Normally an original cannot be inserted from
18. 0 WMF NOTE To ensure grounding tighten the screws for the ground wire until the spring washers A are flattened 12 Secure the grounding wire B 1 screw with spring washer to the inside of the table 13 Run the roll feeder harness C and roll feeder heater harness D through the holes in the table rear cover right E and left F NOTE There are two versions of the ferrite core N for the roll feeder harness One is gray and the other is white When installing the gray core version on the A252 copier unwind one loop as shown For A252 copier 14 Connect the roll feeder harness to the copier main board and original feed motor drive board K 2 connectors G and 1 grounding wire H 1 screw with spring washer For A251 copier 14 Connect the roll feeder harness to the copier main board 2 connectors G and 1 grounding wire H 1 screw with spring washer 15 Connect the roll feeder heater harness connector I to the copier ac drive board connector 16 220 240 V versions only Install the ground plates L M 1 screw with spring washer and 1 washer each 17 Install the harness covers J 1 screw each 18 Reattach all the covers and manual feed table excluding the roll feeder right cover 3 23 INSTALLATION PROCEDURE 19 20 21 22 23 24 25 26 B gt Paper Length HH ge Leading Edge B gt Trailing Edge e Synchro Preset Variable HH Function Se
19. 3 297 and AO 1189 originals 2 Access SP 35 synchro cut length auto adjustment 297 mm and input the difference between the measured length and 297 mm 3 Press the RF Select key The copy quantity indicator blinks Input the test copy number default 5 Press the RF Select key Place the measured original A3 on the original feed table If the original is not placed correctly placed diagonally by pressing the key once this step can be canceled only one time Otherwise carry out this procedure from the beginning Repeat step 5 until the number in the blinking copy quantity indicator is O 7 Press the RF Select key 8 Access SP 36 synchro cut length auto adjustment 1 189 mm and carry out the adjustment in the same way as for the 297 mm adjustment o E E o 3 5 E o E o o c 2 o cc 5 5 DRUM UNIT 15 April 1998 5 4 DRUM UNIT 5 4 1 DRUM UNIT REMOVAL A252R504 WMF A252R505 WMF Remove the development unit Remove the 2 screws A at both ends Remove the timing belt B A251 copier grounding plate spring B A252 copier and disconnect the harness connector C 4 Remove the drum unit D 5 Place the drum unit on the flat floor NOTE 1 When reinstalling the drum unit hook the drum unit guides E on the pins F of the copier side plates 2 Hold both ends of the drum unit to carry it 5 6 15 April 1998 FUSING 5 5 FUS
20. 4 591 546 515 508 420 364 297 257 10 2000 1800 1600 1400 1200 1000 800 600 400 245 11 2000 1750 1500 1250 1000 750 500 245 12 2000 1950 1900 1850 1800 1750 1700 1650 1600 1550 1500 1450 1400 1350 1300 1250 1200 1150 1100 1050 1000 950 900 850 800 750 700 650 600 550 500 450 400 350 300 245 13 2000 1800 1500 1189 1100 1050 1000 950 900 841 800 750 700 650 594 550 500 420 297 245 14 2000 1800 1456 1200 1189 1085 1030 900 880 841 765 728 625 594 515 420 364 297 245 15 2000 1800 1500 1200 1189 594 245 16 2000 1800 1500 1200 1000 841 420 245 17 2000 1800 1500 1220 1189 915 841 610 594 458 420 305 297 245 18 2000 1800 1500 1189 1118 864 841 594 559 432 420 297 280 245 19 The data stored in SP23 to 32 In inch Mode 0 48 0 42 0 36 0 24 0 18 0 12 0 1 44 0 42 0 34 0 22 0 17 0 11 0 2 80 0 72 0 64 0 48 0 42 0 36 0 24 0 18 0 12 0 9 6 3 80 0 72 0 64 0 44 0 42 0 34 0 22 0 17 0 11 0 9 6 4 5 6 80 0 72 0 64 0 48 0 44 0 36 0 34 0 24 0 22 0 18 0 17 0 12 0 11 0 9 6 80 0 70 0 60 0 50 0 40 0 30 0 20 0 10 0 9 6 80 0 75 0 70 0 65 0 60 0 55 0 50 0 45 0 40 0 35 0 30 0 25 0 20 0 15 0 10 0 9 6 80 0 75 0 70 0 65 0 60 0 55 0 50 0 48 0 42 0 36 0 24 0 18 0 12 0 9 6 80 0
21. 4 L2 Lower RF 36 B1 Registration 25 M2 Antihumidity Heater Exit 7 Q4 Paper End 35 D1 Leading Edge 42 D1 Humidity 34 C1 Original Entrance 43 Q5 Original Rear 44 Q6 Exit Cover Open 47 Q3 Printed Circuit Boards Main 22 J6 PSU 21 K11 AC Drive 15 C12 FL Regulator 23 N9 Operation Panel 10 A6 RF Control 37 H2 Original Feed Drive 46 E4
22. 6 6 14 4 12 0 11 7 11 0 10 1 9 6 The data stored in SP23 to 32 Default Settings for Each Destination SP 1 Qoooi io ooonmo 2onm m Regma Ozalid N oOlOIOIOIOIOIOINIO oO oOlOIOIOIOIOIOINIO O looooo o onmo om lo lololoo o oiv oom iloloooo o onm 2 2om oo Oo oo Oo oo Oo eec 88 oO o oo oO o oo oO ooo 13 14 17 A252 only 4 14 15 April 1998 SERVICE REMARKS 4 6 SERVICE REMARKS 4 6 12 AC DRIVE BOARD Noise Filter AC Drive Board TB202 TB201 A252M500 WMF Service Remark for 220 240 V Version Make sure that the harnesses are connected to the noise filter and ac drive board as shown correctly 1 Set the power supply cord hot line brown wire connector to terminal 1 on the noise filter 2 Set the power supply cord neutral line blue wire connector to terminal 2 on the noise filter 3 Set the noise filter harness hot line black wire yellow connector to terminal 3 on the noise filter 4 Set the noise filter harness neutral line white wire white connector to terminal 4 on the noise filter 5 Set the noise filter harness hot line black wire yellow connector to TB201 on ac drive board 6 Set the noise filter harness neutral line white wire white connector to TB202 on ac drive board 4 15 SERVICE REMARKS 15 April 1998
23. DER A571 Accessory Check Check the accessories and their quantities according to the following list Harness COVER o edt he ee t rA LU NI E 2 pcs Angle Bracket cies nina in a amaaan MOXVARN ARE UAE 1 pc ACO se Pt 1 pc Small oap s cnc A UA A d A A A RAD A tT 1 pc Screws M4 x 8 eeessssssssssesenenenee nennen nennen ttn 8 pcs Screws with Spring Washer M4 x 8 2 pcs Washer 220 240 V versions only eeussssss 2 pcs Ground Plate 220 240 V versions only 2 pcs Screws with Spring Washer M4 x 8 for Ground Plate 220 240 V versions Only eie eo eoe ethos door dorm 2 pcs NOTE When the Roll Feeder is installed on the copier the table A714 or A836 is required 3 18 15 April 1998 INSTALLATION PROCEDURE D Installation C A5711501 WMF A5711502 WMF 1 Lower the feet A so that the table does not move while the roll feeder is being installed on the table and the copier NOTE Do not place the roll feeder unit B onto the floor roughly to prevent the left and right covers from being damaged Remove the shipping tapes C and shipping cushions D Remove the left and right covers E and F 3 screws each Remove the front cover G 2 screws and lower the front cover arms H to the down position 3 19 D WW N o ES N N T Ae ya z fe s P Ly E q i Hf NI Cc z Ce Er m e TGV a a Z QW gt
24. E MY BS O HE jf 3 7 E D M X tuy lt LLI ao 2 e LLI O O ao A Z O LL 3 E x 3 D E z lt A5711505 WMF 2 screws lower right front cover B 2 screws lower right middle cover C 3 20 5 Open the copier paper path section and remove the copier left lower cover A toner collection bottle D and rear cover E 2 screws 6 Remove the small caps F from the copier rear cover using cutting pliers 7 Remove the table rear cover G 4 screws 15 April 1998 INSTALLATION PROCEDURE c o i N c A5711506 WMF NOTE Take care not to drop the manual feed table when removing the bracket A 8 Remove the lower front cover B 2 screws reinforcement plate C 1 screw bracket A 4 screws which is changed by the harness and the manual feed table D 3 21 INSTALLATION PROCEDURE 15 April 1998 A5711507 WMF C A5711508 WMF 9 Mount the roll feeder unit on the copier hook the mounting arms A on both sides into the mounting rail B NOTE Lift the unit by holding the plate C just under the size marks 10 Install the angle bracket D and spacer E 4 screws 11 Install the small cap F 2 screws 3 22 15 April 1998 INSTALLATION PROCEDURE Installation A5711513 WMF A571151
25. ING 5 5 1 FUSING UNIT REMOVAL J K pp St o Er o o n amp s o c og s ad A252R509 WMF NOTE Close the paper path section to remove and reinstall the fusing unit 1 Remove the copier rear cover 2 Open the exit cover A and remove the shoulder screws B at both ends Remove the screws C for the grounding wires 3 Disconnect the connector D remove the screw E and flex the hinge arms F of the exit cover slightly to the outside of the exit unit shafts and remove 4 Turn the exit unit G 1 4 of a turn to the front side rear view and remove it by pulling out NOTE When reinstalling the exit unit set the right hinge H between the two pulleys I and raise the left hinge J using tape K 5 7 FUSING 15 April 1998 A252R507 WMF A252R506 WMF 5 Disconnect the connectors A Remove the screw B fixing the safety switch bracket 220 240 V version only Remove the 2 screws C and bronze plate D 2 screws 8 While pressing down the fusing pressure release bar E pull out the fusing unit NOTE While pressing down the fusing pressure release bar E set the fusing unit on the guides F and align the cuts G to the side plates H at both ends when reinstalling the fusing unit 5 8 15 April 1998 T amp S CORONA UNIT 5 6 T amp S CORONA UNIT 5 6 1 TRANSFER AND SEPARATION CORONA WIRE REPLACEMENT A pp St o Er o o n amp s as
26. J2SS Mark II Machine Code A251 A252 Service Manual Insert Version The A251 A252 machines are based on the A163 copier Only the differences from the base copier are described in the following pages Therefore this documentation should be treated as an insert version of the base copier s service manual It should always be utilized together with the base copier s service manual INSERTION PROCEDURE OF SERVICE MANUAL 1 Replace the book spine tag with the new one 2 Insert the A251 A252 service manual after the A163 manual IMPORTANT SAFETY NOTICES PREVENTION OF PHYSICAL INJURY 1 Before disassembling or assembling parts of the copier and peripherals make sure that the copier power cord is unplugged 2 The wall outlet should be near the copier and easily accessible 3 Note that some components of the copier and the peripherals are supplied with electrical voltage even if the main switch is turned off 4 If any adjustment or operation check has to be made with exterior covers off or open while the main switch is turned on keep hands away from electrified or mechanically driven components 5 The inside and the metal parts of the fusing unit become extremely hot while the copier is operating Be careful to avoid touching those components with your bare hands 6 The copier is not attached to the table Pushing the copier too hard may cause it to drop onto the floor While moving the copier pus
27. Pour 1 kg of the developer F into the development unit evenly across its width as shown NOTE Close the paper path section while opening the toner supply cover Otherwise the toner supply cover will drop 10 Plug in the power supply cord and turn on the main switch 3 7 INSTALLATION PROCEDURE 15 April 1998 f Clear Modes B gt Paper Length Cut Select y Energy Set Energy Saver zr AGAR U Dar Original e Variable Preset Cut Program 5 LJ b Wait Lighter Copy a Vellum B Trailing Edge ES eooneooe B Fim quim Bypass Select B B Copy Counter Function Select RolPaperCu Copy Media Lighter Darker Clear Stop kJ ma Emergency Stop D B E A2521508 WMF NOTE If the fusing temperature is lower than 60 C when the main switch is turned 11 12 13 14 on the main motor will rotate In this case it is not necessary to access the SP mode to load the total 2kg of developer Steps 11 to 14 Turn off the main switch to stop the main motor after the developer is loaded from the development entrance Then pour in another kg of developer Press the following keys on the operation panel Clear Mode key A key B key Clear Stop key C Press the Clear Stop key again for longer than 3 seconds The wrench and toner end indicators will blink SP INPUT OUTPUT mode Select 23 using the key and key D and press the RF
28. Select key E The main motor will rotate Press the RF Select key to stop the main motor after the developer is loaded from the development entrance Pour in another kg of developer into the development unit evenly across its width Total 2 kg Press the Clear Modes Stand by key 3 times to leave the SP mode 3 8 A 15 April 1998 INSTALLATION PROCEDURE 15 16 17 2a Clear Modes B gt Paper Length Gy Energy y Set punta Cut Select ty Saver O Original ree AGAR U Dar e Variable Preset Cut Program 5 uJ D wat Lighter Copy a Vellum B Trailing Edge ES eooneooe B Fim quim f Bypass Select B A B Copy Counter Function Select RolPaperCu Copy Media Lighter Darker Clear Stop Rn Emergency Stop c o i N c E C B F A2521508 WMF Press the following keys on the operation panel Clear key A key B key C Clear Stop key D Press the Clear Stop key again for longer than 3 seconds The roll paper end and call service indicators will blink SP mode Select 36 using the and keys Enter 1 by pressing the following keys Function Select key E key HF Select key F Five minutes later the copier will automatically return to the normal operating mode from SP mode 3 9 INSTALLATION PROCEDURE 15 April 1998 A2521507 WMF 18 Install the toner cartridge A as shown 19 R
29. de In these cases this adjustment is required 0 Standard 9 05 11 Copy Number Limit Setting Determines the maximum copy number The default settings for the A251 and A252 copiers are different 99 sheets A251 10 sheets A252 20 sheets 30 sheets 40 sheets 50 sheets 60 sheets 70 sheets 80 sheets 90 sheets OONOORWN O Not Used Repeat Copy Length Limit Setting Determines the maximum copy length for repeat copy A252 copier only 1 200 mm 48 inch The maximum paper length determined by SP55 Machine Operation Counter Displays the total time hours of the machine operation total time of the motor rotation dc X XXX Total Copy Length Number Display Feet Displays the total copy length by feet SP69 t6 XXX XXX Developer Initialization Number Counter Displays the total number of developer initializations SP36 Also displays the developer counter SP77 at the last developer initialization dnF XX total number of developer initializations Hde XX XXX developer counter at the last developer initialization Toner End Number Counter Displays the total number of toner end conditions dtE Also displays the toner counter SP78 at the last toner end condition Hat 4 2 dtE XX Hdt XX XXX 15 April 1998 Mode No Function SERVICE TOOLS Data Toner Near End Counter Displays t
30. e up side down in the direction of A 3 Install the middle plate F and rear cover G 4 screws each NOTE If the optional copy tray is installed after copier installation install the front copy tray stay I and rear copy tray stay J after step 3 4 Tighten all the screws until the spring washers H of screws are flattened 5 Put the table the correction way up 3 13 INSTALLATION PROCEDURE 15 April 1998 3 2 3 COPY TRAY A836 10 Accessory Check Check the accessories and their quantities against the following list Front Copy Tray Slay sicsesenecenasatesidtaucnetlaeuewsuatayuvenaleustemsvevimenenne 1 Hear Copy Tray Stay seceisertwecsecesnaesicetwontitetanssecntinensGaekwexkiautuaetie 1 Copy Tray Support sisi cihessseishasiassishansiondndadneadudadhesensadntndetedeiaceed 1 Copy Tray GUAE a astcsuicitscctarastaasitcansieeicansiienstuasisadneasbsaibaanbaninaeniaess 2 CODY Tray SMC m m 3 Nylon Clamp C 1 Rear Copy Tray mc 3 Rear Copy Tray Sheet Short Rear Copy Tray Sheet Center NOTE The copy tray is an option for the A252 copier When the copy tray is installed on the copier the table A836 00 is required 15 April 1998 INSTALLATION PROCEDURE Installation A8361501 WMF A8361502 WMF 1 Install the front copy tray stay A and rear copy tray stay B 4 screws each NOTE This step should be done during the table installation when the table and the cop
31. emove the sealing tape B from the cartridge and turn the knob C until it stops 3 10 15 April 1998 INSTALLATION PROCEDURE LE Al S A2521506 WMF c o i N c A2521509 WMF A252 copier only step 20 20 Install the original guides A A251 copier only step 21 and 22 21 Attach the guide wires B to the copy tray C 22 Install the copy tray C and copy guide D 23 Reinstall all the covers 24 Check the copy quality and copier operation 3 11 INSTALLATION PROCEDURE 15 April 1998 3 2 2 TABLE A836 Accessory Check Check the accessories and their quantities according to the following list Mop cic 2 eec c EE E 1 Lett Side Plate oio ur rr rH nS M sd EI M Ud ME 1 Right Side Plate 2c ceto ood rettet ten caer tltrtnde neis 1 Middle Plate sien chick ence en ch DESEE SUD ULERED LESE LESE HD 1 Rear GOVEI medaia bandos Hop ID Font ED FREDHRED VE KR KEEPER GE UL Kp REP 1 Screws with Spring Washer M4 x 8 ssssssesssssss 14 15 April 1998 INSTALLATION PROCEDURE Installation A8361501 WMF A A8361500 WMF NOTE To ensure grounding paint has been removed from the surfaces around the screw holes A only from the surfaces where the two components meet and from the surface around the screw hole B at the inside of the left plate 1 Temporarily install the top plate C left D and right side plate E 6 screws 2 Turn the tabl
32. es stt scc ete rM Edu 2 pcs GODV T dy ca eite idest ptit eod ct estes 1 pc COPY QUIS bem 1 pc Operating Instruction Holder ssssss 1 pc 15 April 1998 INSTALLATION PROCEDURE E c o i N c A2521500 WMF 1 Lower the feet A so that the table does not move while the copier is being installed on the table 2 Place the copier B on the table C Place the copier feet D into the table holes E NWARNING The copier is not attached to the table Pushing the copier too hard may cause it to drop onto the floor While moving the copier push the table 3 5 INSTALLATION PROCEDURE 15 April 1998 G A2521501 WMF A2521510 WMF D E A2521502 WMF 3 Open the paper path section A Remove the right upper cover B 2 screws 5 Remove the drum protection sheet C and remove the screw D to apply cleaning blade pressure to the drum 6 Open the fusing exit section Remove the two strips of shipping tape E and protection sheet F 7 Remove two strips of shipping tape G Close the paper path section and fusing exit section 15 April 1998 INSTALLATION PROCEDURE A2521511 WMF Installation A2521503 WMF A2521504 WMF Remove two shipping cushions A Open the original feed unit B manual feed table C and toner supply cover D Remove a sheet E covering the developer entrance
33. h the table 7 When the main switch is turned on the machine will suddenly start turning to perform the developer initialization Keep hands away from any mechanical and electrical components during this period HEALTH SAFETY CONDITIONS 1 Never operate the copier without the ozone filters installed 2 Always replace the ozone filters with the specified ones at the specified intervals 3 Toner and developer are non toxic but if you get either of them in your eyes by accident it may cause temporary eye discomfort Try to remove with eye drops or flush with water as first aid If unsuccessful get medical attention OBSERVANCE OF ELECTRICAL SAFETY STANDARDS 1 The copier and its peripherals must be installed and maintained by a customer service representative who has completed the training course on those models 2 Caution The RAM pack on the main control board has a lithium battery which can explode if replaced incorrectly Replace the RAM pack only with an identical one The manufacturer recommends replacing the entire RAM pack Do not recharge or burn this battery Used RAM packs must be handled in accordance with local regulations SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL Do not incinerate the toner cartridge or the used toner Toner dust may ignite suddenly when exposed to open flame Dispose of used toner developer and organic photoconductors according to local regulations These are non toxic supplies Dispo
34. he total number of toner near end conditions dtn Also displays the toner counter SP78 at the last toner end condition Hat dtn XX Hdt XX XXX Not Used Not Used Number of Misfeeds by Location Displays the total number of originals in the paper length indicator and paper misfeeds by location in the leading edge indicator Jt X XXX Total Jam J1 J8 initial jam J10 J45 original jam J51 J72 copy paper jam J80 J99 roll feeder paper jam Number of Service Call by Location Displays the total number of service calls SC in the paper length indicator and SC codes by location in the leading edge indicator Et X XXX total SCs E1 E15 each SC Service Call Records Displays the last five service calls one after the other E1 XX The last SC code E2 XX 1 before the last SC code E3 XX 2 before the last SC code E4 XX 3 before the last SC code E5 XX 4 before the last SC code Beeper XX SC code Not Used Not Used 4 3 SERVICE TOOLS 15 April 1998 Mode No Function Data RAM Clear Clears selected data items from the RAM Not Used To clear the memory input the number of Machine Operation the item you want to delete then press the The memory for key SP67 Note If all the memory is cleared if a Copy Length Counter number from 20 to 28 is selected SP69 to 75 reinput the factory settings that are OPC
35. ication Symptom FU301 125 V 8A No power FU302 125V6 3A Flourescent lamp does not light Black copy FU303 125V6 3A No indication Beeper sound FU304 125V6 3A E 10 is indicated AC Drive Board Fuse No Specification Symptom 250V 15A No power Een U S A version only 250 V8A No power OBAD Europe version only 6 2 ELECTRICAL COMPONENT LAYOUT A2528500 WMF A2528502 WMF A2528501 WMF A2528503 WMF Index P to P P to P Name No Location Name No Location Motors Lamps Main 32 L9 Exposure 2 M9 Exhaust Fan 5 H11 Fusing 3 N12 Paper Feed 43 G1 Pre Transfer PTL 20 M2 Cutter 39 F1 Quenching QL 1 J1 Original Feed 45 P11 Power Packs Magnetic Clutches Charge Bias Grid 19 H9 Registration 30 N2 Power Pack Toner Supply 31 K1 Transfer Separation 16 J9 Solenoids Thermistors Pick off Pawl 6 I1 Hot Roller 8 E10 Pressure Roller 11 F10 Switches Main 17 G10 Thermofuses Original amp Paper Fusing 9 L12 Feed Safety ye e Fusing Exit Safety 12 C11 Heaters Door 38 H3 Anticondensation 13 G11 Left Cutter 40 E1 Right Cutter 33 F1 Others Total Counter 28 O1 Sensors Circuit Breaker Door Open 29 Q4 Europe Asia 14 B12 Toner Density 26 K2 Fuse U S A Original Registration 4 M6 Q6 Upper RF 41 M Light 27 N1 Antihumidity Heater Entrance Feed 2
36. lect B Copy Counter BH J Bypass Select B Cut Select Preset Cut Roll Paper Cut Energy iy Saver B Vellum B gt Fim Copy Media AC y G Lighter Set Original D wat Lighter Copy quini Darker _ 15 April 1998 Clear Modes Energy Saver Clear Stop A D Emergency Stop E C B F A5711514 WMF Length PRG PRG Temperature 309 NO T00 NO NORMAL XX 42 XX 45 HIGH VELLUM XX 43 XX 46 LOW FILM XX 44 XX 47 Plug in the power supply cord and turn on the main switch Press the following keys on the operation panel Clear Modes key A key B key C Clear Stop key D Press the Clear Stop key again and hold it down for longer than 3 seconds The roll paper end and call service indicators will blink SP mode Select 40 using the and keys Enter 1 by pressing the following keys Function Select key E key RF Select key F Input values into SP modes 42 to 47 in accordance with the decal that is attached to stuck on the right side plate Press the Clear Modes key 3 times to leave the SP mode Reattach the roll feeder right cover Check the roll feeder operation 3 24 15 April 1998 SERVICE TOOLS 4 SERVICE TABLES 4 3 SERVICE TOOLS 4 3 1 SERVICE PROGRAM MODE All items except for the following are common with the A163 copier Please refer to the A163 copier service manual Service Prog
37. nce sensor A252 only dJ02 Initial misfeed at the original registration sensor dJ03 __ Initial misfeed at the original rear sensor A252 only dJO5 Initial misfeed at the entrance sensor dJ06 Initial misfeed at the registration sensor dJ07 Initial misfeed at the exit sensor dJ08 Initial misfeed at the leading edge sensor of the roll feeder dJ10 Original entrance sensor OFF check during the original A252 only scanning process Original entrance sensor ON check during the original a scanning process hens Only dJ17 Original entrance sensor OFF check during the original A252 only returning process Original entrance sensor ON check during the original os returning process pene only dJ21 Original registration sensor leading edge ON check during A252 only the original scanning process dJ22 Original registration sensor trailing edge OFF check during A252 only the original scanning process Original registration sensor trailing edge ON check during dorm the original scanning process DEDE only dJ25 Original registration sensor leading edge OFF check during A252 only the original returning process dJ26 Original registration sensor leading edge ON check during A252 only the original returning process dJ27 Original registration sensor trailing edge OFF check during A252 only the original returning process dJ28 Original registration sensor trailing edge ON check during A252 only the original returning process Original rear senso
38. overheat 9 Heaters Anticondensation Keeps moisture from forming inside the copier 13 option Others Total Counter Keeps track of the total length of copies made 2g Europe or the total copies made U S A Circuit Breaker Guards against voltage surges in the input power Europe Asia 14 Fuse U S A 15 April 1998 DRUM 2 DETAILED SECTION DESCRIPTIONS 2 1 DRUM 2 1 2 DRUM DRIVE 2 o o o2 i oo an o e A252 copier only A252D502 WMF A252D503 WMF The OPC drum A is 80 millimeters in diameter and 970 millimeters long It turns constantly when the main motor B is on When the main motor turns on the drive is transmitted to the drum as follows main motor drive gear C idle gears D drum drive gear E gt drum flange F drum When the drum knob is tightened the right flange presses firmly against the drum so that the drum is held tightly between the flanges The drum and flanges turn together when the main motor is on At this time the drive is also transmitted to the original feed rollers G through the original feed drive pulley H and belt I A251 Copier The original feed rollers J original entrance and rear rollers for the A252 copier are driven by the original feed motor K 2 1 EXPOSURE 15 April 1998 2 3 EXPOSURE 2 3 2 PAPER AND ORIGINAL FEED A252 ONLY D Jo H H G NT mel RE
39. per trailing edge pJ70 Exit sensor OFF check at the paper leading edge pJ71 Exit sensor ON check at the paper leading edge pJ72 Exit sensor OFF check at the paper trailing edge rJ80 Leading edge sensor OFF check at the paper leading edge rJ81 Leading edge sensor ON check at the paper leading edge rJ90 Paper cutter failure rJ91 Door open during roll feeding Roll feeder rJ95 Motor does not turn off after paper is fed 500 mm more than the maximum paper length Leading edge sensor ON check at the paper trailing edge rJ98 duri j uring roll feeding rJ99 Leading edge sensor OFF check at the paper trailing edge during roll feeding 4 12 15 April 1998 JAM CODE LIST Fixed Paper Size Pattern Data SP No 22 In mm Mode 0 1189 841 594 420 297 1 2000 1189 841 594 420 297 245 2 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 245 3 2000 1900 1800 1700 1600 1500 1400 1300 1200 1189 841 594 420 297 245 4 2000 1800 1456 1189 1030 841 728 594 515 420 364 297 245 5 2000 1500 1230 880 625 450 330 245 6 1456 1030 728 515 364 257 7 8 9 2000 1456 1030 728 515 364 257 245 2000 1500 1189 1100 841 594 420 300 297 245 2000 1456 1200 1189 1091 1085 1030 1016 1000 939 900 880 841 813 788 765 762 758 728 679 636 625 59
40. py paper When the copy paper is fed out to the appropriate length the roll paper feed motor stops and the cutter unit cuts the paper When making duplicate copies at the appropriate time after the trailing edge of the original passes at the original registration sensor the rotation of the original feed motor changes in the opposite direction and the speed of the original feed motor changes to 200 mm s The roll paper feed motor starts again The original is delivered to the original feed start position and roll paper feed starts again The above process is repeated After all the duplicates have been made the original is stopped and caught by the original entrance roller original hold mode SP16 If the original hold mode is canceled by SP16 the original is fed out without being caught in the original entrance roller When the original hold mode is selected the original is fed out when the key is pressed 2 o o o2 i oo an o e 2 3 DEVELOPMENT 15 April 1998 2 4 DEVELOPMENT 2 4 2 TONER DENSITY CONTROL Recovery from Toner End Condition After replacing the toner cartridge opening and closing the original feed unit the main motor rotates the development unit for 60 seconds During this period toner is supplied at 100 of the supply amount until TS level reaches 3 Then the main motor rotates the development unit for another 30 seconds Then copies can be made If the TS level does not reach 3 after ro
41. r trailing edge OFF check during the id original scanning process Bene ony dJ33 Original rear sensor trailing edge ON check during the A252 only original scanning process dJ35 Original rear sensor leading edge OFF check during the A252 only original returning process Original rear sensor leading edge ON check during the 99D original returning process AES Onty dJ40 Emergency stop key pressed dJ41 Original registration sensor OFF condition during the original A252 only scanning process Original rear sensor OFF condition during the original ue returning process pene Only dJ43 Original rear sensor ON condition when clearing the original A252 only hold mode by pressing the key JAM CODE LIST 15 April 1998 Code Cause of Jam Remarks dJ45 Original registration sensor does not turn off after paper is fed 2 500 mm pJ51 Registration sensor OFF condition is detected just after starting the copy process Registration sensor OFF condition is detected before p xe the roll feeder again Aet Only Entrance sensor ON condition is detected during roll pJ53 feedi eeding pJ55 Registration sensor does not turn off after paper is fed 2 500 mm pJ60 Registration sensor OFF check at the paper leading edge pJ61 Registration sensor ON check at the paper leading edge pJ62 Registration sensor OFF check at the paper trailing edge pJ63 Registration sensor ON check at the pa
42. ram Mode Table Mode No Function Data Paper Feed Out Refer to the A163 service manual for details 0 2 minutes Waiting Time The paper from the roll feeder is fed out only 1 1 minute Setting when the roll feeder is attached to the A251 2 2 minutes copier 4 minutes 5 minutes 2 minutes 1 minute 2 minutes 4 minutes 5 minutes No auto feed out 1 second 2 seconds 3 seconds 4 seconds 5 seconds 6 seconds 7 seconds Auto Shut off Time Determines the auto shut off time 1 30 5 240 Setting 120 V machines only Original Hold After original scanning is finished the 0 No Mode original exit roller stops before completely 1 Original Hold mode feeding out the original This is to prevent the original from dropping onto the floor after scanning The original is fed out when the key is pressed or when the next original is inserted A252 copier only Length Size Adjusts the speed of the original feed motor 1 0 shorter 0 0 gt Magnification A252 copier only 1 0 longer The setting can be changed by the key operation Semi synchro Cut Selects whether the roll paper cut key must 0 Pressing the roll Original Scanning be pressed at the appropriate time when the paper cut key Mode trailing edge of the original passes the Semi 1 Inserting the original synchro cut mark or whether the original again must be inserted again after the original is scanned and the length is
43. s Door Open in the operation panel and 47 prohibits the key operation Information ELECTRICAL COMPONENT DESCRIPTIONS 15 April 1998 Name Function Index No Function Index No eie Gree Bears 22 eee Printed Circuit Boards Main Controls all copier functions both directly and 22 through other PCBs PSU Converts the ac voltage to dc voltage 21 AC Drive Provides ac power to the fusing lamp and PSU 15 FL Regulator Stabilizes power to the exposure lamp 23 Operation Panel Control the operation panel display 10 Original Feed Drive Controls the rotation of the original feed motor 46 A252 only Lamps Exposure Provides light to reflect the original s image onto 2 the drum fluorescent lamp Fusing Provides heat to the fusing unit 3 Pre Transfer PTL Reduces the charge on the drum surface prior to 20 image transfer Quenching QL Neutralizes any charge remaining on the drum 1 surface after cleaning Power Packs Charge Bias Provides high voltage power for the charge 19 Grid Power Pack corona charge grid and development bias Transfer Separation Provides high voltage power for the transfer 16 corona and separation Thermistors Hot Roller Monitors the hot roller s surface temperature 8 Pressure Roller Monitors the pressure roller s surface 11 temperature Thermofuses Fusing Protects against fusing
44. s Spring 21 Original Table 9 OPC Drum 22 2nd Original Press Roller 10 T S Corona Unit 23 Exposure Lamp 11 Main Drive Unit 24 Fiber Optic Array 12 Table 25 Cleaning Blade 13 Paper Spool 15 April 1998 MECHANICAL COMPONENT Information JN OO A252V505 WMF 26 Original Guide 30 Original Rear Roller 27 Rear Copy Tray Option Copy Tray 31 Original Entrance Press Roller 28 Original Feed Motor 32 Original Rear Press Roller 29 Original Entrance Roller DRIVE LAYOUT 15 April 1998 1 5 DRIVE LAYOUT 11 12 13 14 15 4 5 6 A252V503 WMF A252 copier only A252V501 WMF 1 Original Feed Roller Pulley 11 Hot Roller Drive Gear 2 Original Feed Roller One Way Pulley 12 Fusing Drive Sprocket Gear 3 Development Unit 18 Toner Collection Coil Drive Gear 4 Development Unit Relay Gear 14 Drum Drive Gear 5 Development Drive Chain 15 Original Feed Drive Pulley 6 Paper Registration Roller Clutch 16 Original Feed Drive Belt 7 Drum Drive Relay Gear 17 Original Feed Motor 8 Main Motor 18 Original Rear Roller Pulley 9 Fusing Drive Chain 19 Original Entrance Roller Pulley 10 Exit Unit Drive Belt 15 April 1998 ELECTRICAL COMPONENT DESCRIPTIONS 1 6 ELECTRICAL COMPONENT DESCRIPTIONS Refer to the electrical component layout on the reverse side of the Point to Point Water proof paper index numbers
45. se of replaced parts in accordance with local regulations 4 When keeping used RAM packs in order to dispose of them later do not put more than 100 RAM packs per sealed box Storing larger numbers or not sealing them apart may lead to chemical reactions and heat build up 15 April 1998 1 OVERALL MACHINE INFORMATION 1 4 SPECIFICATIONS Configuration Copy Process Original Feed Original Size Copy Size Copying Speed First Copy Warm up Time Multi Copy Automatic Reset Photoconductor Drum Charge Reproduction Ratio Exposure System Exposure Lamp Development Toner Replenishment Toner Consumption Development Bias Toner Density Control Image Density Adjustment Paper Separation Cleaning Paper Feeding Image Fusing Fusing Lamp Self diagnostic Codes SPECIFICATIONS c o c LJ o M c Table top Electrostatic transfer system Sheet feed Maximum 914 x 2 000 36 x 80 mm Minimum A4 81 2 x 11 lengthwise Same as Original Size 3 cpm A1 D sideways 24 seconds A1 D sideways A251 copier 30 seconds A1 D sideways A252 copier Within 5 minutes Room temperature 23 C 1 to 1 only A251 copier 1 to 10 A252 copier 2 minutes after copying is finished can be set to 1 3 4 or 5 minutes or to no auto reset Organic photoconductor drum Single wire with grid plate Negative Charge 1 1 40 5 Slit exposure via fiber optic array Fluorescent lamp 26 W
46. t Note 0 Main Motor 1 Toner Supply Clutch 2 Pick off solenoid 3 Registration Clutch 4 Total Counter 5 Pre transfer Lamp 6 Quenching Lamp 7 Fusing Lamp 8 Exposure Lamp 100 duty ratio 9 Exposure Lamp selected ID level 10 Main Charge Corona 11 Grid Voltage 12 Transfer Charge Corona 13 Not Used 14 Separation Charge Corona 15 to 19 Not Used 20 Bias Voltage for the Image Area 21 Bias Voltage for the Non image Area 22 Main Charge Corona Grid Voltage 23 Main Motor PTL Bias Voltage for the Non image Area Quenching Lamp 24 Original Feed Motor Forward A252 copier only 25 Original Feed Motor Reverse A252 copier only 26 Roll Feeder Dehumidity Heaters 27 Roll Feeder Cutter Motor 28 Roll Feeder Paper Feed Motor Original Feed Motor Original feed motor Forward and Reverse operation changes every A252 copier only time the roll feed key is 30 pressed 1st time Forward 2nd time Stop 3rd time Reverse 4th time Stop 34 Main Switch OFF Energy Star Turn off the main switch NOTE The cutter unit continuously moves between the left and right cutter switches The number of the movements 0 9999 is displayed in the paper length indicator 4 10 15 April 1998 4 4 JAM CODE LIST 4 4 2 JAM CODE TABLE Cause of Jam JAM CODE LIST Remarks dJ01 Initial misfeed at the original entra
47. tation of the development unit the CPU stops the machine and displays the toner end condition This prevents the operator from resetting the toner end condition by simply opening and closing original feed unit 2 4 15 April 1998 FUSING AND PAPER EXIT 2 8 FUSING AND PAPER EXIT 2 8 1 OVERVIEW A252 COPIER The copy paper is delivered to the lower paper exit The location of the fusing exit sensor is different from the A163 and A251 copier Except for this difference the A252 copier is identical to the with A251 and A163 copiers Please refer to A163 copier service manual for details 2 o o o2 i oo an o e 2 5 15 April 1998 INSTALLATION REQUIREMENTS 3 3 1 INSTALLATION INSTALLATION REQUIREMENTS 3 1 1 ENVIRONMENT 1 2 3 10 Temperature Range 15 C to 30 C 59 F to 86 F Humidity Range 20 to 80 RH Ambient Illumination Less than 1 500 lux do not expose to direct sunlight Ventilation Minimum space 20 m z Room air should turn over at least 30 m hr person Ambient Dust Less than 0 15 mg m 4 x 10 oz yd E If the installation place is air conditioned or heated place the machine as follows a Where it will not be subjected to sudden temperature changes from low to high or vice versa b Where it will not be directly exposed to cool air from an air conditioner in the summer c Where it will be directly exposed to reflected heat from a space heater in the winter
48. the upper side when reassembling 5 2 3 FIBER OPTICS ARRAY REMOVAL A252 ONLY 1 Remove the exposure glass 2 Open the toner supply cover E and remove the front original guide plate F 1 screw 3 Remove the rear original guide plate G 4 screws and 1 pin H Lift up the fiber optics array I and remove it from the left side by sliding it out to the right side as shown NOTE When reassembling be careful not to damage the right side J of the fiber optics array by touching the optics side plate K 5 2 15 April 1998 OPTICS 5 2 4 EXPOSURE LAMP REMOVAL A252R511 WMF 1 Remove the fiber optics array NOTE If the exposure lamp is too tight to be turned remove one side of the exposure lamp socket 1 screw and remove the exposure lamp 2 Turn the exposure lamp A 1 4 of a turn and remove NOTE Make sure that the direction of the aperture B of the exposure lamp is towards the fiber optics array side rear side pp Se o Eg o o n amp s as og s ad 5 3 OPTICS 15 April 1998 5 2 5 LIGHT SENSOR REPLACEMENT A252 ONLY A252R503 WMF 1 Follow the steps from 1 to 2 of the fiber optics array removal 2 Replace the light sensor A 1 screw 1 connector 5 4 15 April 1998 OPTICS 5 2 6 SYNCHRO CUT LENGTH ADJUSTMENT A252 ONLY This adjustment should be carried out when the original registration and or original entrance sensor is replaced 1 Measure the actual length of A
49. using temperature Stops copying and feeds out the original Stops copying but the original is not fed out Copying starts again after the fusing temperature recovers 15 April 1998 SERVICE TOOLS 4 3 2 INPUT OUTPUT CHECK MODE Input Check Mode Table The on off status of the selected electrical component is displayed in the paper length indicator ON or OFF is displayed If a program number not used is selected NOT is displayed Program No Sensor Switch Signal 1 Registration Sensor 2 Exit Sensor 3 Original Registration Sensor 4 Entrance Sensor 5 Main Motor LOC Signal Status is ON when the main motor is normally rotating 6 Door Switch Status is ON when the door is open 7 Original Entrance Sensor A252 copier only 8 Original Rear Sensor A252 copier only 9 Not Used 10 R F Leading Edge Sensor 11 Roll Feeder Door Switch 12 Right Cutter Switch 13 Left Cutter Switch 14 Paper End Sensor 46 Exit Cover Open Status is ON when the door is open 4 9 SERVICE TOOLS Output Check Mode Table Press the key to turn on the selected elected electrical component The status of the component is displayed in the paper length indicator To turn off the component press the key again 15 April 1998 Program No Electrical Componen
50. y tray are installed at the same time Refer to the table installation procedure If the copy tray is installed after the copier installation remove the roll feeder and copier from the table then loosen the screws of the table then do step 1 2 Install the copy tray guides C 1screw each 3 Install the copy tray support D 2 truss screws 3 15 INSTALLATION PROCEDURE 15 April 1998 A B A8361503 WMF E A8361504 WMF 4 Adhere the copy tray sheets with rubber A to the middle plate B of the table so that the copy tray sheets are positioned between the screw holes C on the rear copy tray stay D as shown in the illustration Hook the rear copy trays E onto the rear copy tray stay D 6 Secure the copier power supply cord F to prevent the cord from interfering with the paper path 1 nylon clamp G and 1 screw 15 April 1998 INSTALLATION PROCEDURE D A8361505 WMF c 2 zu N 265 5mm D 265 5mm LU A8361506 WMF C A A8361508 WMF 7 Adhere the rear copy tray sheet center long A and the two rear copy tray sheets short B onto the exit cover as shown 8 Adhere the copy tray stoppers C to the front side of the table middle plate D INSTALLATION PROCEDURE 15 April 1998 3 2 4 ROLL FEE
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