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1. 70 3 1 2 Engine maintenance 71 3 1 2 1 Operator parieli iei a ine 71 3 1 2 2 General self diagnosis mode level 1 71 3 1 2 2 1 Entering self diagnosis mode level 1 71 3 1 2 2 2 Exiting self diagnosis mode 71 3 1 2 3 Switchiseamtest iii CO ttr ome 72 3 1 2 4 Motor and clutch teste 75 3 1 2 5 Testprinting dtr n dii Ernie 77 3 1 2 6 NVM initiallZatlOn ioo oett ei E Eee ex reet at 81 3 1 2 7 Consumable counter display 82 3 1 2 8 Consumable counter display continuous 82 3 1 2 9 Error Messages and their Details 83 3 1 3 SWA board ennemis 87 3 1 3 1 Short plug settings eia cece 88 3 1 3 2 Printings singly using controller equipped printer 88 3 2 Adjustments after Parts Replacement 89 3 2 1 Precautions in replacing engine controller board 89 3 2 2 Precautions in replacing EEPROM ersssennsnsnensnnenn
2. 89 I ey nas v8 891 v8 hifi oo suo pue 10J Sjex90S WIC X aW9s2 ot NYHGS 10 5195005 WIG 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 41316401TH Rev 9 130 Oki Data CONFIDENTIAL 3 LED Control PWB Y71 PWB POWER_ STUCK o 4 Duplex Control PWB V71 PWB CLUTCH RSENS INSENS MOTOR 5 Control Panel PWB X71 PWB O PANEL TNRSNSK 41316401TH Rev 9 131 6 N71 PWB 7 Entrance Sensor PWB R71 PWB 8 Paper Size Sensing PWB PXC PWB JODEN INSNS2 c Oki Data CONFIDENTIAL INSNS1 41316401TH
3. 28 Retard Pad Assy Retard Pad Assy Spring 29 Feed Roller and Nudger Roller en 30 Rear COVET cebren iere 31 FAG Up Tray tit e E lasted cd saa e A 32 Left Side COVE irni r a 33 Right Side COVEN isunaren ben an 34 Multipurpose Tray Assy Multipurpose Tray Cover Assy Links Multipurpose Tray Top Cover Multipurpose Tray Drive Gear 35 Drum Contact ASSYS poii neeaaea a aaia aaea aa a adaa 36 Registration Roller Assy A Registration Drive Gear A 37 Registration Roller Assy B 38 Registration Clutch and Registration Motor Assy 39 Main Cooling Fan uursssensssennsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nenn 40 Color Registration Sensor Assy sssssssssssse eene 41 Duplex Guide ASSY viiite aana naiiai iaaea nennen nnns entres 42 Electrical Chassis Cooling Fan marnnnnnnnvnnnnnnvnnnnrrvnnnnrnnnrnvennnnrrnnrnrenernrrnnsnnnnenr 43 Printer Engine Controller PWB sse 44 Printer Unit Chassis ette te Fra e ER Fn dd 45 Entrance Cassette Sensor Actuator uursnssessssennnnnnennnnnnnnnnnnnnnnnnnnnnnnnnnnn nn 46 Entrance Sensor PWB cecrus ietie
4. O 40952701 Multipurpose Tray Top Cover 41256204 Print Engine Controller PWB 71K 1200 41256206 Print Engine Controller PWB 71K 600dpi 1949740 Fleeirieal C is Coeline 40197102 Electrical Chassis Cooling Fan ECO C7400 033 4PB4083 2500P008 Screw T3x3 4PB4013 3100P008 Screw M3x8 PSW2 8C Screw M2x8 816A2323M0000 EEPROM 4PB4083 2500P010 Screw T3x10 4PB4013 3100P006 Screw M3x6 41304001 Fuser Unit ODA 120V 41304003 Fuser Unit OEL APS 41304007 Fuser Unit ODA 230V 41316401TH Rev 9 136 Patrs No Table 7 1 2 3 Oki Data CONFIDENTIAL Recommended Q ty Year Remarks per 500 per 1000 per 2000 41303901 Belt Unit ODA 41303903 Belt Unit OEL APS 41304105 ID Y ODA 41304106 ID M ODA 41304107 ID C ODA 41304108 ID K ODA 41304109 ID Y OEL APS 41304110 ID M OEL APS 41304111 ID C OEL APS 41304112 ID K OEL APS 41304205 Toner Cartridge Type C2 Y 10K ODA 41304206 41304207 41304208 41304209 41304210 41304211 Toner Cartridge Type C2 M 10K Toner Cartridge Type C2 C 10K Toner Cartridge Type C2 K 10K Toner Cartridge Type C2 Y 10K Toner Cartridge Type C2 M 10K Toner Cartridge Type C2 C 10K ODA ODA ODA OEL OEL OEL 41304212 Toner Cartridge Type C2
5. Counts except the count Total Sheets Feed are cleared upon replacement of the units respectively where errors are corrected 3 2 3 EEPROM replacement after SWA board replacement To replace the SWA 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 3 1 3 SWA board adjustments for the setting procedure 41316401TH Rev 9 90 Oki Data CONFIDENTIAL 3 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 Set A4 papers in the tray specified on the operator panel 1 2 Press 0 several times to display COLOR MENU 3 Press or 5 to display COLOR BALANCE CORRECTION PATTERN PRINT 4 Press 3 to start test printing Press 1 to display COLOR BALANCE CORRECTION RESET 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
6. Oki Data CONFIDENTIAL 2 3 2 LED Assy LED Assy Spring 1 Open the top cover 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 3 Remove the LED connector 2 When assembling attach the LED connector 4 to the LED head and insert the flat cable into it SI Si Figure 2 3 2 LED Assy LED Assy Spring 41316401TH Rev 9 23 Oki Data CONFIDENTIAL 2 3 3 Top Cover Unit 1 Remove the top cover see section 2 3 1 2 Remove the rear cover see section 2 3 10 3 Remove the left side cover see section 2 3 12 4 Remove the right side cover see section 2 3 13 5 Remove the shield plates A and B see section 2 3 22 and unplug the connector to separate the top cover 6 Disengage the top cover unit 1 at two places to detach it Figure 2 3 3 Top Cover Unit 41316401TH Rev 9 24 Oki Data CONFIDENTIAL 2 3 4 Control Panel Assy Control Panel Bezel LED Control PWB Toner Sensors Stacker Full Sensor Control Panel Control Panel Tape Harness Eject Rollers Detach the control panel bezel placed in the control panel Assy 2 Remove the screw 1 to demount the control panel Assy Detach the control panel tape harness 9 iN Remove the top cover unit See section 2 3 3 C1 Unscrew the four screws 3 to
7. 2 Remove the screw 1 and connector to demount the red and blue exit sensor Assy Figure 2 3 29 Exit Sensor Assy 41316401TH Rev 9 50 2 3 30 Fuser Latching Handle L 1 Remove the latching handle spring 2 Unscrew the screw 2 to detach the fuser latching handle L Figure 2 3 30 Fuser Latching Handle L Oki Data CONFIDENTIAL 41316401TH Rev 9 51 2 3 31 Belt Motor Assy 1 Remove the fuser latching handle R see section 2 3 32 2 Remove the two screws 1 to detach the two connectors 3 Demount the belt motor Assy 3 Figure 2 3 31 Belt Motor Assy Oki Data CONFIDENTIAL 41316401TH Rev 9 52 Oki Data CONFIDENTIAL 2 3 32 Fuser Latching Handle R 1 Remove the printer unit chassis see section 2 3 24 2 Remove the E ring D 3 Remove the fuser latching handle spring 2 to detach the fuser latching handle R 3 N Figure 2 3 32 Fuser Latching Handle R 41316401TH Rev 9 53 2 3 33 Main Motor Assy 1 Remove the belt motor Assy see section 2 3 31 2 Remove all the connectors 3 Remove the four screws 1 to demount the main motor Assy 2 Figure 2 3 33 Main Motor Assy Oki Data CONFIDENTIAL 41316401TH Rev 9 54 Ok
8. ST 2 3 37 I O Remove the printer unit chassis see section 2 3 24 Unscrew the five screws 1 to remove the lower plate Unscrew the four screws 3 to demount the main feed Assy 4 Unhook and remove the main feed drive gear Figure 2 3 38 Main Feed Assy Oki Data CONFIDENTIAL Remove the low voltage power supply and high voltage power supply see sections 2 3 36 and 41316401TH Rev 9 59 Oki Data CONFIDENTIAL 2 3 39 Cassette Left Guide Assy Remove the printer unit chassis see section 2 3 24 Remove the main feed Assy see section 2 3 38 3 Remove the three screws 1 to detach the left cassette guide Assy 2 At the same time the earth plate 3 becomes detached 4 Remove the cassette lift spring 2 then remove the plastic slide 5 the cassette lift arm L and the plastic roller 7 Remove the two feet 8 Remove the cassette lock spring then remove the cassette lock 9 O C aS Figure 2 3 39 Cassette Left Guide Assy 41316401TH Rev 9 60 Oki Data CONFIDENTIAL 2 3 40 Cassette Right Guide Assy Remove the printer unit chassis see section 2 3 24 Remove the main feed Assy see section 2 3 38 Remove the five screws 1 to detach the right cassette guide Assy 2 At the same time the earth pl
9. ana En nn nahe dd d un 47 Entrance MT Sensor Actuator and Entrance Belt Sensor Actuator 48 Fuser Exit Roller ied ett ur ge rex apa aan 49 Exit S hnsor ASSy ioci IHRER FER Gam did 50 Fuser Latching Handle L esee enne 51 Belt Motor ASSy nn ee en ek e rne de e niece 52 Fuser Latching Handle R sessse eene nennen 53 Main Motor Assy un an ee iin 54 41316401TH Rev 9 4 Oki Data CONFIDENTIAL 2 3 34 Main Feeder Drive Motor sssesseeeeene eene nnne 55 2 3 85 Contact Assy Left Plate ASSy 2 56 2 3 86 Low Voltage Power Supply nennen nnne 57 2 3 37 High voltage power supply eeen emen 58 2 3 38 Main Feed Assy 59 2 3 89 Cassette Left Guide Assy 60 2 3 40 Cassette Right Guide 61 2 9 441 Fuser Ult sn er ne HP UR SEU E teer Fed cid 62 2 342 tee tr Ber nc etur e i n inii etes 63 2 3 43 Pupe Um ai e t EC ae ata ets 64 2 3 44 Guide Rails L and R sss ener 65 2 3 45 Duplex Transport Assembly esssse eene nennen 66 2 3 46 GU ASSy 2e Do p t n E ette ese E tear et eed 68 3 ADJUSTMENTS nee 70 3 1 Maintenance Modes and Their Functions sese 70 3 1 1 Maintenance
10. With HDD 0 gt 0 gt 3 gt 1 8 Font List Printing PCL A list of PCL fonts is printed Operation Press of Switches Without HDD 0 gt 3 25 1 gt 1 gt 3 With HDD 0 gt 0 3 3 gt 1 T 3 Font List Printing PS A list of PS fonts is printed Operation Press of Switches Without HDD 0 gt 3 gt 1 gt 1 gt With HDD 0 gt 0 gt 3 gt 1 L1 jeu Demo Printing The demo patterns for destinations stored in ROM are printed Operation Press of Switches Without HDD 0 gt 3 gt 1 gt T 1 5 1 With HDD 0 gt 0 5 F 3 1 3 17 1 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 41316401TH Rev 9 88 Oki Data CONFIDENTIAL 3 2 Adjustments after Parts Replacement Adjustment 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 Y M C K Not required Fuser Unit Not required Belt Cassette Assy Not required PU K71 Board Re mounting the EEPRO
11. 3 1 2 4 Motor and clutch test This self check routine is used for testing the motor and clutch 1 Goto the self diagnosis level 1 mode and hold the and 5 keys down until the upper display of MOTOR amp CLUTCH TEST is brought up the key increments a test item and the key decrements a test item 2 Hold the and keys down and wait for the display for a unit to be tested to appear on the lower line the key increments a test item and the key decrements a test item Corresponding displays are listed in Table 3 2 MOTOR amp CLUTCH TEST TETTE MITT 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 3 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 Driving corresponding units subject to the constraints listed in Table 3 2 The driving and activating out of the constraints are disabled and the constraints appear on the lower display 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 k
12. 40839401 Right Cassette Guide Assy o o NI oD a AJOJN 40349701 Plastic Roller 40368304 Paper Size Sensing PWB PXC 4PP4076 5360P001 Paper Size Actuator 41309304 2nd Tray Gonneeter 41309101 2nd Tray Connector 4PB4016 1960P002 4PB4016 1960P004 Feet Foot ECO C7400 033 4PB4083 2500P008 Screw T3x8 4PB4083 5670P002 41275901 Screw T4x10 Front Cover Open Switch 41316401TH Rev 9 146 Oki Data CONFIDENTIAL 147 Duplex Unit Parts No Table 7 5 Recommended Q ty Year Oki Data CONFIDENTIAL Remarks 41305301 Duplex Transport Assy 4PB4043 4718P001 Screw SP3x10 4PB4083 2500P010 Screw T3x10 4PB4083 2500P008 Screw T3x8 4PB4013 3100P006 Screw M3x6 41372901 Duplex Unit 41372903 Duplex Unit 41372907 Duplex Unit 41316401TH Rev 9 148 Oki Data CONFIDENTIAL APPENDIX A CENTRONICS PARALLEL INTERFACE 1 Connector Printer Side 36 pin receptacle female Equivalent of type 57RE 40360 830B D29 made by Daiichi Denshi Kogyo Cable Side 36 pin plug male Equivalent of type 57 30360 made by Daiichi Denshi Kogyo Equivalent of plug 552274 1 AMP 52073 1 AMP 2 Cable Usea cable of not more than 1 8m
13. Board Memory 64MB 1200dpi APS 41437419 Board Memory 128MB 1200dpi Duplex ODA 41437415 Board Memory 128MB 1200dpi Duplex OEL 41437411 Board Memory 128MB 1200dpi Duplex APS 41376902 41437302 Board MLET B09 Board MLET B09 Option OEL Option APS 41376005 HDD Assy Option ODA 41376004 HDD Assy Option OEL 41376002 HDD Assy Option APS 41848501 Board Assy CU Maintenance 41278601 Guide Rail A ECO C7400 093 41278701 Guide Rail B 41410201 Motor Fan 41467401 Plate FG Centro 41254601 Plate Blank ECO C7400 093 41723901 Screw ECO C7400 093 41723901 Screw 4LB 102100 2A Collar ECO C7400 093 41316401TH Rev 9 Oki Data CONFIDENTIAL Figure 7 2 41316401TH Rev 9 Top Cover As Parts No Table 7 2 sembly Oki Data CONFIDENTIAL Recommended Q ty Year Remarks per 500 per 1000 per 2000 40859701 Top Cover 6 12 41071401 LED Assy 1200dpi 24 48 41072401 41072402 LED Assy 1200dpi LED Assy 600dpi 48 40861001 LED Assy Spring 41257901 LED Control PWB Y71 40365404 Stacker Full Sensor 41316501 Top Cover Inner Frame Kit 41309603 LED Harness M 41309604 LED Harness C oO O N oO O1 41309602 LED Har
14. C7200 C7400 Color LED Page Printer Spare Parts List Extracted from C7200 C7400 Maintenance Manual ODA OEL INT 2002 12 12 Rev 9 41316401TH Rev 9 Oki Data CONFIDENTIAL PARTSLIST Figure 7 1 1 3 41316401TH Rev 9 Oki Data CONFIDENTIAL 41316401TH Rev 9 Oki Data CONFIDENTIAL Board Assy cu 43 Maintenance 41848502 consists of a set of a bracket to support Motor Fan 46 41410201 a sheet metal to secure PCB Assy SWA 35 41716809 a gasket bonded to that sheet metal and screws attached to the assembly The member 35 PCB Assy SWA 41716809 which must be replaced together with the metal and its grouped parts in 43 is given a set of part Nos i e the No of the discrete PCB and the No of the metal Figure 7 1 3 3 41316401TH Rev 9 Oki Data CONFIDENTIAL Table 7 1 1 3 Main Assembly Patrs No Recommended Q ty Year Remarks per per per 500 1000 2000 40864601 Front Cover Assy 3 6 12 41042501 Front Cover Inner Baffle 12 3 6 40866701 Cassette Assy 3 6 3 6 41138401 Retard Pad Assy aJ AJOJN O m 40864301 Rear Cover 41374902 Face Up Stacker Assy N N o I O a I w I w w 40864401 Left Side Cover 40864501 Right Side Cover 40862001 Multipurpose Tray Assy 0 0 0o 0o 0o o 4086
15. FACTORY WORKING MODE appears 6 While FACTORY WORKING MODE is being displayed use the 3 and 7 keys to select a setting value 7 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 41316401TH Rev 9 89 Oki Data CONFIDENTIAL Note 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 ofthe EEPROM Count Description of Count 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 the Cyan Imaging Drum 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 pages printed Black Impressions Total Number of Pages The number of pages printed after the installation of a new Cyan Impressions Printed ID unit Magenta Impressions Yellow Impressions
16. Lower Heater Temperature Measurement Set Value in units of Environmental Temperature Measurement in units of Environmental Humidity Measurement in units of The display is changed at the press of the 8 key KOR Ss WIR NCIS SS MIR KO NR KV YTR MTR CTR and KTR mean the transfer voltage settings for colors in KV The display is changed at the press of the key IRS eee KR uS EQ MRS SVOR Ss AV YR MR CR and KR are the transfer voltage measurements for transfer roller colors in KV 41316401TH Rev 9 78 Oki Data CONFIDENTIAL RSA KVER LCS IOVI MRS IRA CRSP Sc ROW 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 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 3 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 41316401TH Rev 9 79 Oki Data CONFIDENTIAL Pattern 5 Pattern 6 Pattern 7 5 Steps 2 through 4 to be repeated on an as n
17. Video Overrun Detect Is the CU Assy installed properly Can the printer recover from the error by replacing the SWA board Install the CU Assy properly Replace the SWA board The EEPROM needs replacement Service Call 100 101 Error Error detected at Engine ROM Checksum when turned on Does the error repeat Replace the PU board Replace the engine control board 71K Service Call 102 Error Error detected at Engine RAM Read Write when turned on Does the error repeat Replace the engine control board 71K Service Call 103 Error Error detected at Engine SRAM Read Write when turned on Does the error repeat Replace the engine control board 71K Service Call 104 Error Error detected at Engine EEPROM Checksum when turned on Does the error repeat Replace the engine control board 71K Service Call 105 Error EEPROM not detected when turned on No EEPROM Does the error repeat Confirm the existence of EEPROM Without it mount an EEPROM Replace the engine control board 71K Service Call 106 Error Error detected at Engine Control Logic Does the error repeat Replace the engine control board 71K Service Call 120 Error 122 Error Error detected at the Power unit cooling fan in the Controller cavity 1 Is the error message displayed 2 Does the error repeat Turn off on the printer Replace the Fan
18. 1 Paper Loading Jam 1st Tray Has the paper loading jam occurred immediately after power on 1 Yes Is the paper jammed at the entrance cassette sensor or the entrance MT sensor Yes Remove the jammed paper Y No Does the sensor lever entrance cassette sensor entrance MT sensor move properly No Replace the defective sensor lever Y Yes 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 Yes Checkthe signal cable connection or replace the engine board T No Has the paper loading jam occurred immediately after the paper drawing into the tray Yes Has the paper reached the entrance cassette sensor or the entrance MT sensor Yes Goto S No Replace the feed roller or the paper separation frame Assy of the paper cassette Y wo Is the main feed motor running Yes Replace the feed roller or the paper separation frame Assy of the paper cassette y No Does the resistance of the main motor lie at the rated value approx 40 No Replace the main feed motor Y Yes Is 32V output to the fuses FU2 and FU3 of the engine board No Replace the low voltage power unit Yes Replace the engine board after checking the gear engagement and cable connec
19. Oki Data CONFIDENTIAL OKI C7400 C7200 Color LED Page Printer MAINTENANCE MANUAL ODA OEL INT 1 157 2000 05 29 Document Revision History Corrected items Page Description of change Oki Data CONFIDENTIAL Person in charge E4 Yamazaki 2000 05 31 E4 Murakami 2000 12 04 NIP9 Yamazaki 2000 12 15 NIP9 Yamazaki 2001 05 15 CN11 Kasuya 2001 10 12 NP33 YAMAZAKI 2002 05 28 NP33 YAMAZAKI 2002 08 09 2002 12 12 NP34 Ueda 41316401TH Rev 9 2 Oki Data CONFIDENTIAL PREFACE This manual describes the procedures of the maintenance of the C7400 C7200 of printers The document is produced for maintenance personnel use For details on the procedures for handling the C7400 C7200 of printers see its user documentation Note The descriptions in this manual are subject to change without prior notice Inpreparing the document efforts have been made to ensure that the information in it is accurate However errors may be crept into the document Oki Data assumes no responsibility for any damage resulting from or claimed to be the results of those repairs adjustments or modifica tions to the printers which are made by users using the manual The parts used for the printers are sensitive and if handled improperly may be damaged It is strongly recommended that t
20. 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 3 2 2 41316401TH Rev 9 115 Oki Data CONFIDENTIAL Vertical White Belt or Line or Uneven Color Belt or Line Figure 5 2 Yes Y No No T Yes Yes T No Yes T No No T Yes Yes Y No No T Yes Are the LED heads dirty Clean the dirty LED head s 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 corrected 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 5 3 Connect the I D terminal s to the contact Assy properly Replace the 1 0 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 3 2 2 41316401TH Rev 9 116 Oki Data CONFIDENTIAL P
21. S Remove the left plate Assy see section 2 3 22 Remove the connector and the E ring 1 then remove the two screws the earth and the registration clutch 2 4 Remove the connector to remove the two screws 5 and the registration motor Assy Figure 2 3 18 Registration Clutch and Registration Motor Assy 41316401TH Rev 9 39 Oki Data CONFIDENTIAL 2 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 Outlet Figure 2 3 19 Main Cooling Fan 41316401TH Rev 9 40 Oki Data CONFIDENTIAL 2 3 20 Color Registration Sensor Assy 1 Remove the two screws D and the two connectors to demount the color registration sensor Assy 2 2 Remove the earth plate B 3 Figure 2 3 20 Color Registration Sensor Assy 41316401TH Rev 9 44 2 3 21 Duplex Guide Assy 1 Unlatch and demount the duplex guide Main chassis rear Figure 2 3 21 Duplex Guide Assy Oki Data CONFIDENTIAL 41316401TH Rev 9 42 1 2 3 22 Electrical Chassis Cooling Fan 1 Unscrew the four screws 1 to remove the plate A 2 2 Unscrew the four screws 3 to remove the shield plate B 4 3 Remove the printer engine controller PWB see section
22. Yes Is the paper jammed at the entrance belt sensor Yes Remove the jammed paper Y No Does the write sensor lever move properly No Replace the write sensor lever Y Yes 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 PWB Pin 6 Entrance belt sensor No Replace the sensor board R71 PWB after checking the cable connection Y Yes Check the signal cable for connection Is it connected properly No Connect the cable properly h Yes Replace the engine board Y No Has the paper feed jam occurred immediately after the paper drawing into the tray Yes Has the paper reached the write sensor Yes Goto Y No sthe registration motor running No Does the registration of the registration motor lie at the rated value approx 7 9Q No Replace the registration motor Yes Replace the engine board after checking the gear engagement Y Yes Replace the registration roller A or B T No Has the paper jam occurred during the paper loading Yes Isthe belt motor running No Does the registration of the belt motor lie at the rated value approx 7 99 No Replace the belt motor Yes Replace the engine board after checking the gear engagement Yes Replace the belt cassette Assy after checking the gear engagement No End 41316401TH Rev 9 104 Oki Data CONFIDENTIAL 4 Paper Exit Jam
23. asn 01002 SININIG WOH xe 5 u ZSYE 2 p eog Jeueg Joresdo OQ OLG If Ld 031 7 41316401TH Rev 9 1 2 Printer Configuration The inside of the printers is composed of the followings e Electrophotographic Processor Paper Paths e Controller Block CU and PU Operator Panel Power Units High Voltage Unit and Low Voltage Unit Figure 1 2 shows the printer configuration MP Kags Oki Data CONFIDENTIAL 41316401TH Rev 9 8 Oki Data CONFIDENTIAL 1 3 Option Configuration The followings are available as options on the C7400 C7200 of printers 1 2nd Tray 3rd Tray 2 Duplex Unit 3 Expansion Memory 64 128 256 MB 4 Internal Hard Disk 5 Ethernet Board 41316401TH Rev 9 9 Oki Data CONFIDENTIAL 1 4 Specifications 1 External Dimensions Height 430mm Width 430mm Length 620mm 2 Weight 42 kg 3 Papers 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 m2 Front feeder 55 kg to 140 kg 64 to 163g m 4 Print Speed Color 12 pages per minute Transparency 5 pages per minute Monochrome 20 pages per minute
24. displayed setting is applied Repeat step 3 as necessary SWITCH SCAN 00 1 H 2 L 3 H 4 L Display PRINT EXECUTE Setting Function Starts printing at the press of key Ends printing at the press of key TEST PATTERN TBD Selects one of printing patterns 1 LED Head Drive Pattern 2 Color Registration Adjust Pattern 3 Reserved Selects a paper loading end Note When the loading end is set to NONE only the heater and drivable motors operate without the IDs and belt being driven Selects between color monochrome printings Selects between heater on and off 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 Avalue 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 41316401TH Rev 9 771 Oki Data CONFIDENTIAL Following messages are showing at warm up and during printing Dres apes usps U H L Number of Sheets Printed for Test in prints Upper Heater Temperature Measurement Set Value in units of
25. 2 3 30 4 Unscrew the eleven screws 5 to remove the shield plate 5 Unscrew the two screws 7 to demount the electrical chassis cooling fan 8 Figure 2 3 22 Electrical Chassis Cooling Fan Oki Data CONFIDENTIAL 41316401TH Rev 9 43 2 3 23 Printer Engine Controller PWB 1 Remove the right side cover see section 2 3 13 2 Remove the left plate Assy see section 2 3 22 Oki Data CONFIDENTIAL 3 Remove the five screws D and all the connectors to demount the printer engine controller PWB Figure 2 3 23 Printer Engine Controller PWB 41316401TH Rev 9 44 2 3 24 Printer Unit Chassis Unscrew the two screws 1 and remove the inlet 2 Figure 2 3 24 Pinter Unit Chassis Oki Data CONFIDENTIAL Unscrew the four black screws 3 and five screws 4 to detach the printer unit chassis Unscrew the four black screws 6 and remove the left top cover spring Assy Unscrew the four black screws 8 and remove the right top cover spring Assy 9 41316401TH Rev 9 45 2 3 25 Entrance Cassette Sensor Actuator 1 Remove the printer unit chassis see section 2 3 24 2 Turn over the main chassis Oki Data CONFIDENTIAL 3 Remove the two clamps with tweezers to demount the entrance cassette sensor actuator 1 Main chassis Figure 2 3 25 Ent
26. Error U Flash Error On CU board Flash ROM Error Does the error message appear again Replace the SWA board The EEPROM needs replacement Service Call 050 Error Operator Panel Error Does the error message appear again See the flowchart for the problems with no LCD message displayed Service Call 051 Error CU Fan Error On CU board CPU Cooling Fan Problem Is the on CU board connector connected properly Can the printer recover from the error by replacing the fan Connect the connector properly Replace the fan Replace the SWA board The EEPROM needs replacement Service Call 063 Error Network Comm Error CU NIC H W I F Problem Is the network board installed properly Can the printer recover from the error by replacing the network board Install the network board properly Replace the network board Replace the SWA board The EEPROM needs replacement Service Call 070 Error CANT_HAPPEN PS F W Problem Detection Is it recovered by turning the printer off on Replace the SWA board The EEPROM needs replacement Service Call 072 Error Engine Communication Error PU CU I F Error Is the CU Assy installed properly Can the printer recover from the error by replacing the SWA board Install the CU Assy properly Replace the SWA board The EEPROM needs replacement Replace the PU board Service Call 073 Error 075 Error
27. Has the paper exit jam occurred immediately after power on Yes Is the paper jammed at the exit sensor Yes Remove the jammed paper T No Does the sensor lever move properly No Replace the sensor lever T Yes 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 Yes Replace the engine board T No Is the face up stacker cover open or close completely No Open or close the stacker cover completely T Yes Is the heat motor running t No Does the resistance of the heat motor lie at the rated value approx 7 90 No Replace the heat motor Y Yes Is 32V output to the POWER connector Pins 7 10 on the engine board No Replace the low voltage power unit Y Yes Replace the engine board after checking the cable connection Y Yes Does the exit guide Assy operate properly No Replace the exit guide Assy Yes Replace the engine board 41316401TH Rev 9 105 Oki Data CONFIDENTIAL 5 Duplex Jam Has the paper feed jam occurred immediately after power on t Yes Does the paper exist in the duplex unit Yes Remove the jammad paper Y No the levers of the duplex in rear and front sensors move properly No Replace the defective sensor
28. Has the problem been corrected Yes End No Replace the engine board Has the problem been corrected Yes End No Are the I D terminals connected to the contact Assy properly See Figure 5 3 No Connect the 1 0 terminal s to the contact Assy properly Yes 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 3 2 2 41316401TH Rev 9 122 Oki Data CONFIDENTIAL Color Different from Original One Are the LED head lenses dirty Yes Clean the LED head lens es Y No Are the LED head Assys connected to the junction board Y71 PWB properly No Connect the LED head Assy s to the junction board checking the cable connection between them T Yes Is 3 8V output to the following HEADPOW connector pins of the junction board Y71 PWB 3 8V Pins 1 to 8 Yes 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 Y Yes Replace the LED head Assy s after checking the cable connection T No Replace the low voltage power unit after checking the cable connection Has the problem been corrected Yes End Y wo Is 32V output to the power connector of the engine boa
29. LED head error CYAN IRREGULAR ERROR Cyan detected value error CYAN REGISTRATION OUT RIGHT Cyan out of registration value error Right CYAN REGISTRATION OUT LEFT Cyan out of registration value error Left CYAN SENSOR ERROR RIGHT Cyan right sensor error CYAN SENSOR ERROR LEFT Cyan left sensor error CYAN TONER LOW Cyan toner is low CYAN TONER EMPTY Cyan toner 15 empty CYAN DRUM LIFE OVER Cyan ID life is over CU FAN MOTOR ERROR CU fan motor error CALIBRATION ERROR Calibration error CUSTOM DIAGNOSTICS MODE Custom diagnostic mode DUPLEX I F ERROR Duplex unit I F error DISPOSAL TONER SENSOR ERROR DISPOSAL TONER sensor error DISPOSAL TONER NEARFU Waste toner container is near full DISPOSAL TONER FULL Waste toner container is full DIAGNOSTICS MODE Engine diagnostic mode EEPROM SUM CHECK ERROR EEPROM sum check error EEPROM TIMEOUT EEPROM timeout error WV TEMP SENSOR ERROR ENV TEMP sensor error NG INI JFE OVER Engine life error L W LOST CONTROL F W has lost its control FRONT FEEDER STAGE POSITION Front feeder stage position error FRONT COVER OPEN Front cover 1s open FUSER LIFE OVER Fuser life is over FUSER UNIT FUSE CUT ERROR Fuser unit fuse cut error FLASH SOFTWARE ERROR FLASH HARDWARE ERROR FLASH software error FLASH
30. STACKER FULL Stacker is full STACKER FULL FACE DOWN Facedown stacker is full TRAY2 I F ERROR Tray2 I F error IRAY3 I F ERROR Tray3 I F error IRAY4 I F ERROR PX703 Iray4 I F error TRAYS I F ERROR PX703 Tray5 I F error COVER OPEN Top cover 15 open UPPER HEATER LOW TEMPER Upper heater low temperature error UPPER HEATER HIGH TEMPER Upper heater high temperature error UPPER HEATER OPEN ERROR Upper heater thermistor open circuit error UPPER HEATER SHORT ERROR Upper heater thermistor short circuit error WARMING UP Warming up WDT ERROR Watchdog timer timeout error YELLOW DRUM UP DOWN ERROR Yellow ID up down error YELLOW DRUM UNIT FUSE CUT ERROR Yellow ID unit fuse cut error YELLOW TONER SENSOR ERROR Yellow toner sensor error ON D HEAD ERROR Yellow LED head error OW IRREGULAR ERROR Yellow detected value error YELLOW REGISTRATION OUT LEFT Yellow out of registration value error Lefi YELLOW REGISTRATION OUT RIGHT Yellow out of registration value error Rig OW SENSOR ERROR FT Yellow left sensor error OW SENSOR ERROR RIGHT Yellow right sensor error YELLOW TONER LOW Yellow toner is low YELLOW TONER EMPTY Yellow toner is empty YELLOW DRUM LIFE OVER Yellow ID life is over 41316401TH Rev 9 85 Oki Da
31. Transparency 12 pages per minute Postal Card Label Thick Paper 8 pages per minute 5 Resolution 600 x 600 dots per inch 6 Power Input 100VAC 10 7 Power Consumption Peak 1300W Normal Operation 400W 5 duty Idle 110W Power Saving Mode 45W or less 8 Frequency 50Hz or 60Hz 2 9 Noise Operation 54 dB Without second tray Standby 45 dB Power Saving 43 dB 10 Consumable Life Toner Cartridge 5 000 pages 596 duty each of Y M C and K Large Capacity Toner Cartridge 10 000 pages 5 duty each of Y M C and K Image Drum 30 000 pages 596 duty Continuous printing each of Y M C and K 11 Parts Replaced Periodically Fuser Unit Assy Every 60 000 pages Belt Cassette Assy Equivalent of 60 000 pages 3 pages job 41316401TH Rev 9 10 12 Temperatures and Relative Humidities Temperature Operation Temperature Condition Temperature F 50 to 89 6 Temperature C 10 to 32 Oki Data CONFIDENTIAL Remark 17 to 27 C Temperatures to assure full color print quality Non Operation 32 to 109 4 0 to 43 Power off Storage Max One Year 14 to 109 4 10 to 43 With drum and toner Transport Max One Month 20 to 122 29 to 50 With drum and without toner Transport Max One Month Humidity 20 to 122 29 to 50 Relative Humidity Humidity Condition Max Wet Bulb Temperature C Operation 20 to
32. bracket 8 2 Remove the screw 9 and four screws 10 to detach the plate support 1 and the guide rail AG 3 Remove the two screws 13 to detach the guide rail Bd 4 Remove the two screws 15 and two screws 6 and the plate FG Centro t2 then demount the SWA board 8 41848502 6j Board Assy cu Maintenance Attached screw Figure 2 3 46 CU Assy 2 2 41316401TH Rev 9 69 Oki Data CONFIDENTIAL 3 ADJUSTMENTS Adjustments on the C7400 C7200 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 Selectthe one that serves the purpose of intended adjustment 3 1 Maintenance Modes and Their Functions 3 1 1 Maintenance menu The standard menu category includes the maintenance menu category The followings can be set from this menu Maintenance Menu Category Item 1st Line Value 2nd Line DF Functions MAINTENANCE MENU Power Save Mode Enabled Sets the Power Save Mode Disabled 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 Normal Paper Black Implements fine adjustment of Setting 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
33. correct and no adjustment is required If it is not 00 the color balance should be adjusted in the procedures below 3 Press 2 or 6 several times to display the value selected in Step 6 Press 3 to start test printing 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 41316401TH Rev 9 91 Oki Data CONFIDENTIAL 41316401TH Rev 9 92 4 PERIODIC MAINTENANCE 4 1 Parts Replaced Periodically Oki Data CONFIDENTIAL 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 Large Capacity Toner Cartridge Time of Replacement Time when displayed Condition for Replacement 10 000 pages are printed Adjustment after Replacement Replace the toner cartridge 4 2 4 3 4 4 Toner Cartridge Time when 5 000 pages are printed Replace the toner cartridge is displayed ID Time when 20 000 pages are printed Reset the drum counter after the is displayed 3P job replacement of the drum Fuser Unit Time when 60 000 pages ar
34. lever T Yes 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 Y Yes Check the signal cable connection Is it connected properly No Connect the cable properly Yes Replace the duplex controller board V71 PWB Has the paper jam occurred immediately after the paper drawing into the unit Yes Has the paper reached the duplex rear sensor Yes Goto Y No 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 Y Yes Replace the registration roller A or B T No Replace the duplex unit 41316401TH Rev 9 106 Oki Data CONFIDENTIAL Paper Size Error No Yes Y Yes No Y Yes No Y Yes No Y Yes No Y Yes No Y Yes Has the proper size paper used 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 bo
35. message displayed 2 Is the ID unit mounted properly 3 Does the error repeat Confirm the existence of the unit Re install the ID unit and turn off on the printer Replace the ID unit Assy 41316401TH Rev 9 97 Message Install New Drum 350 Y Drum Life 351 M Drum Life 352 C Drum Life 353 K Drum Life End of the ID unit life more copies printed Table 5 1 1 Operator Alarms 4 5 Error Description Is it displayed soon after the ID unit replacement Oki Data CONFIDENTIAL Solutions Confirm the life of the ID unit Replace the ID unit Install Duplex Unit The Duplex unit is removed from the printer Recovered if the Duplex unit is inserted again Normal Replace the Duplex unit or Engine board Check DUPLEX 370 Paper Jam Paper jam detected after paper reverse in the Duplex unit 1 Is a paper jammed in the Duplex unit Remove the jammed paper Check the Duplex unit or replace it Check DUPLEX 371 Paper Jam Paper jam detected at the Duplex unit 1 Is a paper jammed in the Duplex unit Remove the jammed paper Check the Duplex unit or replace it Check DUPLEX 372 Paper Jam Paper jam detectedd uring paper feed from the Duplex unit 1 Does misfeed occur in the Duplex unit Remove the misfed paper and close the cover Check the Duplex unit or replace it Open Side Cover 380 Paper Jam Paper jam during paper fe
36. motor Service Call 123 Error Inappropriate ambient RH detected by a Sensor 1 Is the error message displayed 2 Does the error repeat Turn off on the printer Replace the RH sensor Service Call 124 Error Inappropriate ambient temp detected by a sensor 1 Is the error message displayed 2 Does the error repeat Turn off on the printer Replace the temperature sensor 41316401TH Rev 9 96 Message Service Call 125 Error Error detected at the MT home position Table 5 1 1 Operator Alarms 3 5 Error Description 1 Is the error message displayed 2 Does the error repeat Oki Data CONFIDENTIAL Solutions Turn off on the printer Replace the MT Service Call 130 Error Temperature rise at the LED head detected 1 Is the error message displayed 2 Does the error repeat Turn off the printer leave it for 30 min and then turn it on again Replace the LED head unit Service Call 131 Error 134 Error No LED head unit detected when turning on the printer or closing the cover 1 Is the error message displayed 2 Is the LED head mounted properly 3 Does the error repeat Verify the installation of the LED head Turn off on the printer Replace the LED head Assy Service Call 140 Error 142 Error Error detected with the D located at appropriate position 1 Is the error message displaye
37. power unit or the belt cassette Assy after checking the cable connection Has the problem been corrected Yes End T No Are the ID terminals connected to the contact Assy properly See Figure 5 2 No Connect the I D terminal s to the contact Assy properly 4 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 3 2 2 41316401TH Rev 9 114 Oki Data CONFIDENTIAL Vertical Belt or Line Black or Color Belt or Black or Color Line Figure 5 2 O 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 T Yes Replace the LED head Assy s after checking the cable connection Has the problem been corrected Yes End T No Replace the junction board Y71 PWB after checking the cable connection Has the problem been corrected Yes End Y wo Is the engine board 71K PWB connected to the junction board Y71 PWB properly No Connect the engine board to the junction board properly y Yes Replace the engine board 71K PWB after checking the cable connection Has the problem been corrected Yes End Y No Are the I D terminals connected to the contact Assy properly See Figure 5 3 No Connect the I D terminal s to the contact Assy properly 4 Yes Replace the I D unit s
38. sensor R Duplex in sensor Duplex rear sensor Cover front switch Alter BT MATT Temperature and 2 i humidity sensors Entrance cassette sensor 9 T m x U A Paper empty sensor Paper near empty sensor ER 7 5 Eg E U d Duplex front sensor Paper size 1 2 3 and 4 switch Figure 3 1 Switch Sensor Positions 41316401TH Rev 9 73 Oki Data CONFIDENTIAL uondo 02 NVOS HOLIMS uondo 61 NVOS HOLIMS uondo 81 NYOS HOLIMS TH renser 2104 paa jedeg JOSUaS Buiddoy egesse5 uondo LL NYOS HOLIMS Josuas Aidu3 Jean Jadeg e 919558 JOSUaS Ada Jedeg c ayessey uondo 91 NYOS HOLIMS TH 2104 YOM 7 921 Jadey e aljasseg TH reser 2104 9718 Jeded e allasseg YINMS Z 9218 Jaded ejesse YINMS 9215 oded e ayasseg uondo 91 NYOS HOLIMS TH 2104 paa aded 10505 z apasse uondo vL NYOS HOLIMS TH reaer 2104 Josuas Ajdw3 Jean Jadeg PU099S 105095 jedeg z enesse uondo L NYOS HOLIMS YOUMS 5 Jedeg 7 aljassey TH 2104 YOUMS 8719 Jaded Z ayjassey YOUMS Z 9715 Jaded Z ejesseo YOUMS 9219 Jaded 2 ayjassey uondo ZL NYOS HOLIMS TH reaer 2104
39. the value Normal Paper Color Implements fine adjustment of Setting 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 Transparency Black Implements fine adjustment of Setting 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 Transparency Color Implements fine adjustment of Setting 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 41316401TH Rev 9 70 Oki Data CONFIDENTIAL 3 1 2 Engine maintenance mode The engine maintenance mode includes three modes levels 1 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 d
40. unit EXIT TRAY1 CASSETTE REGISTRATION CLUTCH SENSOR SHUTTER EXIT SOLENOID DUP MOTOR OPTION DUP REAR CLUTCH OPTION E CASSETTE 2 MOTOR OPTION Remove the cassette 2 to drive the unit EXIT TRAY2 CASSETTE CASSETTE2 FEED ROLLER OPTION CASSETTES FEEDER MOTOR Remove the cassette 3 to drive the unit EXIT TRAY3 CASSETTE OPTION CASSETTES ROLLER CLUTCH OPTION ID UP DOWN FAN1 TEST POWER UNIT FAN FAN2 TEST CONTROL BLOCK FAN 41316401TH Rev 9 76 3 1 2 5 Test printing Oki Data CONFIDENTIAL This self diagnostic routine is used when the internal test patterns ofthe PU are printed Othertest patterns are stored in the controller 1 Go to the self diagnosis level 1 mode and hold the 1 and keys down until TEST PRINT comes into view in the upper display the key is for test item increment and the key for test item decrement 2 Onthe lower display setting items applicable only to the test printing appear Hold the and keys down until a target item is displayed the 2 key is for item increment and the 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 2 the setting item and its setting are displayed on the upper and lower parts respectively Pressing the 8 key increments a setting Pressing the 7 key decrements a setting The last
41. 346801 Color Registration Sensor Assy o o OJN 41253701 Registration Shutter Solenoid 41275201 Registration Shutter 41275301 Registration Shutter Spring 40859201 Duplex Guide Assy 40841101 Printer Unit Chassis 41312801 Left Top Cover Spring Assy 41312901 Right Top Cover Spring Assy 40841601 Entrance Sensor Actuator 1 40841701 Entrance Sensor Actuator 2 40841801 Entrance Sensor Actuator 3 41258301 Entrance Sensor PWB R71 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 0 0 0 0O 0O 0O 0O 0O 0O 0O 0O 0O 0O 0O O O 0 O 41253601 Duplex Gate Solenoid Assy 40842401 Fuser Drive Gear A N 40316301 Fuser Drive Gear B 41067201 Fuser Drive Gear C 40323901 Fuser Exit Roller 4PP4076 3949P001 Fuser Exit Roller Bushing L 4PP4043 4489P001 Fuser Exit Roller Bushing R 40842501 Fuser Exit Roller Contact 41073601 Exit Sensor Assy 40841301 Fuser Latching Handle L o gt 40841501 Fuser Latching Handle Springs N 40848801 Belt Motor Assy 40841401 Fuser Latching Handle R wo a 40847301 Main Motor Assy 41316401TH Rev 9 143 Parts No Table 7 3 2 2 Q
42. 4 2 3 4 5 6 Remove the four screws 1 six screws 2 and the eight screws 3 Remove the E ring 8 the clutch 9 and the two screws 10 Unscrew the two screws 17 to remove the core 12 and the connector 3 Unscrew the two screws 2 then detach the motor 5 I I I YH WHY Unscrew the tow screws 6 to remove the connector 7 Oki Data CONFIDENTIAL Remove the cover sides 4 and 5 the plate cover PCB and the frame hopping Assy 41316401TH Rev 9 155 2 C7400 C7200 2nd 3rd Tray PARTS LIST Oki Data CONFIDENTIAL 41316401TH Rev 9 156 Parts No Table 2 1 C7400 C7200 2nd 3rd Tray Recommended Q ty Year Oki Data CONFIDENTIAL Remarks 41304501 2nd 3rd Tray 500Sheet Feeder Assembly ODA 41304503 2nd 3rd Tray 500Sheet Feeder Assembly OEL APS 41780302 Board V7X ECO C7400 023 44409502 Cover Frent OP Assy 41400501 Idler Roller Assembly ECO C7400 033 41462301 Lower Connector W harness 41462201 Upper Connector W harness 41581101 Feeder Drive Assembly 40366501 Feeder Motor 144464064 Feder Cluch 41859201 Feder Cluch Cc wo CO oal Oo ECO C7400 033 41316401TH Rev 9 157 157 OKI
43. 6301 Multipurpose Tray Top Cover 41045801 Link m 40325101 Multipurpose Tray Drive Gear O 40952701 Multipurpose Tray Top Cover 41256204 Print Engine Controller PWB 71K 1200 41256206 Print Engine Controller PWB 71K 600dpi 1949740 Fleeirieal C is Coeline 40197102 Electrical Chassis Cooling Fan ECO C7400 033 4PB4083 2500P008 Screw T3x3 4PB4013 3100P008 Screw M3x8 PSW2 8C Screw M2x8 816A2323M0000 EEPROM 4PB4083 2500P010 Screw T3x10 4PB4013 3100P006 Screw M3x6 41304001 Fuser Unit ODA 120V 41304003 Fuser Unit OEL APS 41304007 Fuser Unit ODA 230V 41316401TH Rev 9 Patrs No Table 7 1 2 3 Oki Data CONFIDENTIAL Recommended Q ty Year Remarks per 500 per 1000 per 2000 41303901 Belt Unit ODA 41303903 Belt Unit OEL APS 41304105 ID Y ODA 41304106 ID M ODA 41304107 ID C ODA 41304108 ID K ODA 41304109 ID Y OEL APS 41304110 ID M OEL APS 41304111 ID C OEL APS 41304112 ID K OEL APS 41304205 Toner Cartridge Type C2 Y 10K ODA 41304206 41304207 41304208 41304209 41304210 41304211 Toner Cartridge Type C2 M 10K Toner Cartridge Type C2 C 10K Toner Cartridge Type C2 K 10K Toner Cartridge Type C2 Y 10K Toner Cartridge Type C2 M 10K Toner Ca
44. 80 With drum and toner Remark 50 to 7096 Humidities to assure full color print quality Non Operation 10 to 90 Power off Storage 10 to 90 Transport 10 to 90 13 Printer Life 600 000 pages on a A4 size basis or five years 41316401TH Rev 9 Oki Data CONFIDENTIAL 2 PARTS REPLACEMENT 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 2 1 Precautions in Replacing Parts 1 Before replacing the parts be sure to remove the AC cable and the interface cable a To remove the AC cable always use the following procedure i Flip the power switch of the printer off to O ii Pull the AC inlet plug of the AC cable out of the AC receptable ii Remove the AC cable and the interface cable from the printer b To connect the printer again always use the following procedure i Connect the AC cable and the interface cable to the printer ii Insert the AC inlet plug into the AC receptacle ii Flip the power switch of the printer on to Disconnect Connect 2 Do not disassemble the printer so long as it operates properly 3 Minimize the disassembly Do not detach parts other than those shown in the replacing procedure 4 For maintenance use designated tools 5 Followthe order instructed to disassemble the printer Incorr
45. CRANGE LEFT RIGHT is displayed Yes Is the color registration sensor cover stained Yes The sensor cover surface is not cleaned appropriately by the cleaning blade on the back ofthe 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 Yes End Replace the belt unit Recovered Yes End Replace the ID unit Recovered Yes End Y no Yellow Magenta Cyan Left Right Horizontal is displayed Y wo Yes Replace the belt unit Recovered Yes End Replace the ID unit Recovered Yes End 41316401TH Rev 9 121 Notes Oki Data CONFIDENTIAL Are there problems in the gears the gear Assys of the 1 05 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 Isthe 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 EEPROM on the engine board after checking the cable connection
46. EFT Magenta left sensor error MAGENTA SENSOR ERROR RIGHT Magenta right sensor error MAGENTA TONER LOW Magenta toner Is low MAGENTA TONER EMPTY Magenta toner is empty MAGENTA DRUM LIFE OVER Magenta ID life is over 41316401TH Rev 9 84 Oki Data CONFIDENTIAL Error Message Details OPECODE TRAP ERROR Operation cord trap error POWER LSI ERROR Power unit LSI error PANEL I F ERROR Opeator panel I F error PU FAN MOTOR ERROR PU fan motor error PAPER SIZE ERROR Paper size error PAPER END S CIED TRAY No paper is left in the selected tray PAPER END TRAYI No paper is left in Trayl PAPER END TRAY2 No paper is left in Tray2 PAPER END TRAYS No paper is left in Tray PAPER END FRONT FEEDER No paper is left Front Feeder PAPER END TRAY4 PX703 No paper is left in Trayd PAPER END TRAYS PX703 No paper is left in Trays PAPER NEAR END TRAYI Paper is going out in Trayl PAPER NEAR END TRAY2 Paper is going out in Tray2 PAPER NEAR END TRAYS Paper 15 going out in Tray PAPER NEAR END FRONT FEEDER Paper is going out Front Feeder PAPER NEAR END TRAY4 PX703 Paper 15 going out in Tray4 PAPER NEAR END TRAYS PX703 Paper 15 going out in Tray RAM ERROR RAM error ROM SUM CHECK ERROR ROM sum check error SRAM ERROR SRAM error
47. Head I PB4083 2500P008 x 2 Tapping Screw PSW2W3 18C x 2 Screw Round Head SW 2W m 41467401 Plate FG Centronics 41597401 Label Caution DIMM Cover 40859701 41316501 Top Cover 2 3 1 Top Cover Inner Frame Assy 2 3 4 4126001 40861001 x 8 Control Panel Bezel 2 3 4 LED Assy Spring 2 3 2 40862002 40325101 MESEN Multipurpose Feeder Assy 2 3 14 Multipurpose Feeder Drive Gear 2 3 14 LED Control PWB Y71 2 3 4 41045802 x 2 40365404 ri an eee Stack Full Sensor 2 3 4 MT Paper Empty Sensor 2 3 14 ea iar p 4 40863201 MT OHP Sensor 2 3 14 r 41297301 41276001 Control Panel Assy 2 3 4 MT Position Sensor 2 3 14 I 2381005P0015 40952702 40927901 Control Panel Tape Harness 2 3 4 Multipurpose Feeder Retard Pad Assy 2 3 8 I 41309601 Top Cover 2 3 14 4PP4043 4698P001 LED Harness K 2 3 4 40866701 Retard Pad Assy Spring 2 3 8 41309602 Cassette Assy 2 3 8 LED Harness Y 2 3 4 41309603 LED Harness M 2 3 4 41309604 LED Harness C 2 3 4 40861201 Top Cover Handle 2 3 5 40861301 Top Cover Latch 2 3 5 40861401 x 2 Top Cover Latch Spring 2 3 5 40861501 Eject Guide Assy 2 3 6 41316401TH Rev 9 21 Oki Data CONFIDENTIAL 2 3 1 Top Cover 1 Open the Top Cover assy 2 Remove the nine screws 1 to detach the top cover 2 Figure 2 3 1 Top Cover 41316401TH Rev 9 22
48. Josuas juol4 xejdnq JOSUaS J8JUay 1 SN4 JEMOT LT eonreA GK Josuas Jeay xejdnq Josuas a nyeledueL Josuas u xejdnq uondo LL NYOS HOLIMS Hxxx onreA GK Hxxx onrea GK Josuas NPILUNH Josuss Jajuay Jesn4 Jeddn 0L NYOS HOLIMS 60 NVOS HOLIMS Hxxx onfea OF 105095 10 02 Hxxx enreA JOSUAS 20105 80 NVOS HOLIMS TH reaer 2104 YOUMS y 9715 Jedeg ejesseo TH 2104 YOUMS ezis Jaded ejesseo TH 2104 YOUMS 9715 Jedeg ayesseg TH 2104 YOUMS azis Jaded ejesseo 20 NYOS HOLIMS TH 2704 Josuas ouejedsuej JIN TH reaer 2707 youms Adwz Jaded IW TH 770g yms 1eddop LIN 90 NVOS HOLIMS SO NVOS HOLIMS vO NVOS HOLIMS YOUMS 13409 Jeddn YOUMS 19409 10014 0 NVOS HOLIMS TH reaer 2104 108095 00 TH reser 21204 JOSUSS N 48U0 10809 J9UO 10095 Y 18U0 20 NVOS HOLIMS TH 2707 JOSU9S 1 4 JE YDEIS 108099 4x3 Josuas jog S0UENUJ LO NYOS HOLIMS TH 2104 Josuas TH reaer 2104 108095 ayjasseg SOUENUI Josuas Ie9N ayjasseg 105095 1edeg 27 00 NVOS HOLIMS NYOS HOLIMS Pe releq L amp SIGeL 74 41316401TH Rev 9 Oki Data CONFIDENTIAL
49. K 10K OEL 41304213 Toner Cartridge Type C2 Y 10K APS 41304214 Toner Cartridge Type C2 M 10K APS 41304215 APS 41304216 Toner Cartridge Type C2 C 10K Toner Cartridge Type C2 K 10K APS 41382805 Toner Cartridge Type C2 Y 5K ODA 41382806 Toner Cartridge Type C2 M 5K ODA 41382807 Toner Cartridge Type C2 C BK ODA 41382808 Toner Cartridge Type C2 K 5K ODA 41382809 Toner Cartridge Type C2 Y 5K OEL 41382810 Toner Cartridge Type C2 M 5K OEL 41382811 Toner Cartridge Type C2 C BK OEL 41382812 Toner Cartridge Type C2 K 5K OEL 41382813 Toner Cartridge Type C2 Y 5K APS 41382814 Toner Cartridge Type C2 M 5K APS 41382815 Toner Cartridge Type C2 C BK APS 41382816 Toner Cartridge Type C2 K 5K APS 41316401TH Rev 9 137 Patrs No Table 7 1 3 3 Recommended Q ty Year Oki Data CONFIDENTIAL Remarks per 500 per 1000 per 2000 41377401 Plate Indicator 3 6 12 41716809 PCB Assy SWA 12 8164323M0000 EEPROM CU 12 41356111 Board TNO 6 6 6 41437418 Board Memory 64MB 1200dpi ODA 41437414 Board Memory 64MB 1200dpi OEL 41437410 Board Memory 64MB 1200dpi APS 41437419 Board Memory 128MB 1200dpi Duplex
50. Left Cassette Guide Assy 40839401 Right Cassette Guide Assy o o NI oD a AJOJN 40349701 Plastic Roller 40368304 Paper Size Sensing PWB PXC 4PP4076 5360P001 Paper Size Actuator 41309304 2nd Tray Gonneeter 41309101 2nd Tray Connector 4PB4016 1960P002 4PB4016 1960P004 Feet Foot ECO C7400 033 4PB4083 2500P008 Screw T3x8 4PB4083 5670P002 41275901 Screw T4x10 Front Cover Open Switch 41316401TH Rev 9 Oki Data CONFIDENTIAL Duplex Unit Parts No Table 7 5 Recommended Q ty Year Oki Data CONFIDENTIAL Remarks 41305301 Duplex Transport Assy 4PB4043 4718P001 Screw SP3x10 4PB4083 2500P010 Screw T3x10 4PB4083 2500P008 Screw T3x8 4PB4013 3100P006 Screw M3x6 41372901 Duplex Unit 41372903 Duplex Unit 41372907 Duplex Unit 41316401TH Rev 9
51. M used prior to the replacement Note CU SWA Board Re mounting the EEPROM used prior to the replacement Note Note When the EEPROM of the PU K71 Board is replaced to a new one color balance must be adjusted 3 2 1 Precautions in replacing engine controller board Whenreplacingthe engine controller board 71K PWB demountthe 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 Inthis case perform the operation described in Section 3 2 2 3 2 2 Precautions in replacing EEPROM When the EEPROM is not demounted from the board and not mounted on new one 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 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 Remove the main controller board 2 While holding the 1 and keys down turn the power on to enter the engine maintenance mode level 1 3 With ENGINE DIAG MODE XX XX on the display press the 2 and keys to enter the engine maintenance mode level 3 4 Press the 1 and keys until LOCAL PARAMETER SET appears on the upper display 5 Press the 2 and keys until
52. ODA 41437415 Board Memory 128MB 1200dpi Duplex OEL 41437411 Board Memory 128MB 1200dpi Duplex APS 41376902 41437302 Board MLET B09 Board MLET B09 Option OEL Option APS 41376005 HDD Assy Option ODA 41376004 HDD Assy Option OEL 41376002 HDD Assy Option APS 41848501 Board Assy CU Maintenance 41278601 Guide Rail A ECO C7400 093 41278701 Guide Rail B 41410201 Motor Fan 41467401 Plate FG Centro 41254601 Plate Blank ECO C7400 093 41723901 Screw ECO C7400 093 41723901 Screw 4LB 102100 2A Collar ECO C7400 093 41316401TH Rev 9 138 Oki Data CONFIDENTIAL Figure 7 2 139 41316401TH Rev 9 Top Cover As Parts No Table 7 2 sembly Oki Data CONFIDENTIAL Recommended Q ty Year Remarks per 500 per 1000 per 2000 40859701 Top Cover 6 12 41071401 LED Assy 1200dpi 24 48 41072401 41072402 LED Assy 1200dpi LED Assy 600dpi 48 40861001 LED Assy Spring 41257901 LED Control PWB Y71 40365404 Stacker Full Sensor 41316501 Top Cover Inner Frame Kit 41309603 LED Harness M 41309604 LED Harness C oO O N oO O1 41309602 LED Harness Y 41309601 LED Harness 41593101 LED Contro
53. POW connector pin 3 LED head Assy Black No Replace the junction board Y71 PWB T Yes Replace the LED head Assy s after checking the cable connection Y No Replace the low voltage power unit after checking the cable connection Has the problem been corrected Yes End Y No Is 32V output to the power connector of the engine board 71K PWB 32V Pins 7 to 10 No Replace the low voltage power unit after checking the cable connection Y Yes Is 32V output to the HVOLT connector pin 5 ofthe engine board 71K PWB No Replace the engine board Y Yes Replace the high voltage power unit or the belt cassette Assy after checking the cable connection Has the problem been corrected Yes End T No Are the I D terminals connected to the contact Assy properly See Figure 5 3 No Connect the I D terminal s to the contact Assy properly 4 Replace the I 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 3 2 2 41316401TH Rev 9 119 Oki Data CONFIDENTIAL 9 Color Misalignment Yy Y 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 Proced
54. RAM Check Error Is the concerned RAM DIMM installed properly Can the printer recover from the error by replacing the RAM DIMM Re install the concerned RAM DIMM Replace the RAM DIMM Replace the SWA board The EEPROM needs replacement Service Call 033 Error CU Slot4 DIMM RAM Check Error Is the concerned RAM DIMM installed properly Can the printer recover from the error by replacing the RAM DIMM Re install the concerned RAM DIMM Replace the RAM DIMM Replace the SWA board The EEPROM needs replacement Service Call 034 Error RAM Configuration Error The CU RAM installation or derwas not followed Is the installation order followed Can the printer recover from the error by replacing the RAM DIMMs Correct the installation order Replace the RAM DIMMs Replace the SWA board The EEPROM needs replacement Service Call 035 Error 51011 RAM Spec Error The CU RAM Slot1 DIMM specification is not supported Is the RAM DIMM a genuine part Is the concerned RAM DIMM installed properly Can the printer recover from the error by replacing the RAM DIMM Use a genuine RAM DIMM Re install the concerned RAM DIMM Replace the RAM DIMM Replace the SWA board The EEPROM needs replacement Service Call 036 Error Slot2 RAM Spec Error The CU RAM Slot2 DIMM specification is not supported Is the RAM DIMM a genuine part Is the concerned RAM DIMM installed pro
55. Rev 9 Parts No Table 7 3 2 2 Q ty Recommended Q ty Year Oki Data CONFIDENTIAL Remarks 40846001 Main Feeder Drive Motor 40848501 Main Feeder Drive Gear A 40848601 Main Feeder Drive Gear B 41303601 Left Plate Assy 40850201 Contact Assy 40737401 Power Unit AC DC switching 115V 40737402 Power Unit AC DC switching 115V ECO C7400 064 40737501 Power Unit AC DC switching 230V 40737502 115V 115V 230V 230V Power Unit AC DC switching 230V oO wo wo o gt o gt oa ECO C7400 064 40737601 Power Unit high voltage 2381018P0001 T HV Fape Harness 2381003P0016 HV Tape Harness ECO C7400 001 41128101 Power Supply Insulator 4PB4013 3100P006 Screw M3x6 PSW4 8C Screw M4x8 41346301 Transfer Contact Assy 41469001 Power Cooling Fan 4PB4083 2500P008 Screw T3x8 41316401TH Rev 9 Oki Data CONFIDENTIAL Figure 7 4 41316401TH Rev 9 Table 7 4 Paper Tray Guide Parts No Q ty Recommended Q ty Year Oki Data CONFIDENTIAL Remarks _ 40839801 Main Feed Assy 40371301 Feed Roller 40313201 Nudger Roller 40325401 Main Feeder Drive Gear 40839001
56. Rev 9 132 Oki Data CONFIDENTIAL 7 PARTS LIST Figure 7 1 1 3 41316401TH Rev 9 133 Figure 7 1 2 3 Oki Data CONFIDENTIAL 41316401TH Rev 9 134 Oki Data CONFIDENTIAL Board Assy cu 43 Maintenance 41848502 consists of a set of a bracket to support Motor Fan 46 41410201 a sheet metal to secure PCB Assy SWA 35 41716809 a gasket bonded to that sheet metal and screws attached to the assembly The member 35 PCB Assy SWA 41716809 which must be replaced together with the metal and its grouped parts in 43 is given a set of part Nos i e the No of the discrete PCB and the No of the metal Figure 7 1 3 3 41316401TH Rev 9 135 Oki Data CONFIDENTIAL Table 7 1 1 3 Main Assembly Patrs No Recommended Q ty Year Remarks per per per 500 1000 2000 40864601 Front Cover Assy 3 6 12 41042501 Front Cover Inner Baffle 12 3 6 40866701 Cassette Assy 3 6 3 6 41138401 Retard Pad Assy aJ AJOJN O m 40864301 Rear Cover 41374902 Face Up Stacker Assy N N o I O a I w I w w 40864401 Left Side Cover 40864501 Right Side Cover 40862001 Multipurpose Tray Assy 0 0 0o 0o 0o o 40866301 Multipurpose Tray Top Cover 41045801 Link m 40325101 Multipurpose Tray Drive Gear
57. Rev 9 17 Oki Data CONFIDENTIAL Cassette Guide Assy L R Figure 2 5 18 41316401TH Rev 9 Duplex Unit Figure 2 6 Oki Data CONFIDENTIAL 41316401TH Rev 9 2 3 Replacing Parts Oki Data CONFIDENTIAL This section describes howto replace the parts and assemblies shown in the following disassembling system diagram C7400 4 41256204 C7200 Print Engine Controller PWB 2 3 23 H X4 LED Assy 2 3 2 r 40737401 Low Voltage Power Supply 2 3 36 40737601 High Voltage Power Supply 2 3 37 Cassette Guide 41143701 r 41309301 40839001 4PP4122 1217P001 Left Cassette Guide Assy 2 3 39 Plastic Slide 2 3 39 40839401 4PP4122 1217P001 I 40349102 Right Cassette Guide Assy 2 3 40 Plastic Slide 2 3 40 Cassette Guide Pivot R 2 3 39 40839801 40371301 r 40349101 40349701 Main Feed Assy 2 3 38 Feed Roller 2 3 9 Cassette Guide Pivot L 2 3 40 Plastic Roller 2 3 39 40325401 40349701 40928101 Main Feeder Drive Gear 2 3 38 Plastic Roller 2 3 40 Cassette Spring 2 3 39 40313201 40928101 4PP4076 5359P001 Nudger Roller 2 3 9 Cassette Spring 2 3 40 Cassette Lock 2 3 39 4PP4076 5359P001 4PP4043 4526P001 Cassette Lock 2 3 40 Cassette Lock Spring 2 3 39 4PP4043 4526P001 4PB4016 1960P002 x 2 Cassette Lock S
58. Use twisted and shielded pair wires for antinoise measures Note The cable is an extra cost option 41316401TH Rev 9 149 Oki Data CONFIDENTIAL 3 Alist of Parallel I F Signals Pin No Signal Name Signal Direction Function 1 DATA STROBE PR Parallel data sampling strobe 2 DATA BIT 1 3 DATA BIT 2 4 DATA BIT 3 5 DATA BIT 4 PR Parallel input data 6 DATA BIT 5 7 DATA BIT 6 8 DATA BIT 7 9 DATA BIT 8 10 ACKNOWLEDGE Completion of data input 11 BUSY PR Printing operation Alarming Paper empty 12 PAPER END PR Paper empty 13 SELECT PR Select state on line 14 Auto Feed PR Mode switch request 15 Unassigned 16 OV Signal earthing 17 CHASSIS GROUND Frame earthing 18 5V PR Supply voltage Max 50mA Min 4 75V 19 OV Signal ground Signal grounding 30 31 INPUT PRIME PR Initialization 32 FAULT PR Paper empty Alarming 33 OV Signal earthing 34 Unassigned 35 High level 3 3k 9 36 Select In PR Mode switch reques Connector Pins Layout 41316401TH Rev 9 150 4 Signal Levels Oki Data CONFIDENTIAL Low Level OV to 0 8V High Level 2 4V to 5 0v 5 Specifications Item Description Compatibility mode Nibble mode ECP mode Mode Data Bit Length Compatibility 8 Nibble 4 ECP 9 bits Control 6 Timing Chart Compatible Mode Initial co
59. When the EEPROM is not replaced see Section 3 2 2 41316401TH Rev 9 117 Defective Image of Regular Interval See Figure 5 2 E Interval 94 2 mm Problem Image Drum Troubleshooting Replace the image drum unit Oki Data CONFIDENTIAL 63 6 mm Developing Roller Replace the image drum unit 57 8 mm Toner Supply Roller Replace the image drum unit 44 0 mm Charging Roller Replace the image drum unit 113 1 mm Fuser Upper Roller Replace the fuser unit Fuser Lower Roller Replace the fuser unit 57 8 mm Note The life counters of the I D units Transfer Roller Replace the bet cassette Assy fuser unit and belt cassette unit are automatically reset upon replacement of the units respectively 41316401TH Rev 9 118 Oki Data CONFIDENTIAL Missing Image Are LED heads dirty Yes Clean the LED head s Y No Are the LED head Assys connected to the junction board Y71 PWB properly No Connect the LED head Assy s to the board checking the cable connection between the LED head s and the junction board Y Yes Is 3 8V output to the following HEADPOW connector pins of the junction board Y71 PWB 3 8V Pins 1 to 8 Yes 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 K
60. agenta Cyan Table 3 3 2 2 Initialization Items in Table 2 Initialization Item Detail Initial Value Registration Yellow LED Initializes the X axis correction value for the 1 1200 inch Set Point Magenta LED LED head Yellow Magenta Cyan X axis Cyan LED Registration Yellow LED Initializes the Y axis left correction value for 1 1200 inch Set Point Magenta LED the LED head Yellow Magenta Cyan y axis Left Cyan LED Registration Yellow LED Initializes the Y axis right correction value for 1 1200 inch Set Point Magenta LED the LED head Yellow Magenta Cyan y axis Right Cyan LED Engine Parameter Initializes all the items that have been set using levels 2 and 3 41316401TH Rev 9 81 3 1 2 7 Consumable counter display Oki Data CONFIDENTIAL The self diagnosis is used to indicate the consumable consumption status 1 After entering the general self diagnosis mode hold the and keys down until CONSUMABLE STATUS appears on the upper display the key is for test item increment and the 5 key for test item decrement 2 By pressing the 2 and 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 key ends the test the display of step 1 is restored Upper Display FUSER UNIT Lower Display kkkkkkkk IMAGES Format Shows the number of sheets fed after the ins
61. ard 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 Do the 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 after checking the cable connection Reeplace the engine board after checking the cable connection 41316401TH Rev 9 107 Oki Data CONFIDENTIAL Image Drum Unit ID Up and Down Operation Error Turn the printer off and after a few seconds on again Are all the ID drums revolving properly during printing No Does the resistance of the ID motor lie at the rated value approx 4 00 No Replace the defective IDU motor Y Yes Is 32V output to F3 and F5 of the engine board No Replace the low voltag
62. ate 3 becomes detached 4 Remove the cassette lift spring then detach the plastic slide 5 the cassette lift arm L and the plastic roller 7 OT Unscrew the screw 8 to remove the paper size actuator 9 Unscrew the screw i9 to remove the paper size sensing PWB 17 in the downward direction N Remove the two feet 2 8 Remove the cassette lock spring 43 then remove the cassette lock 4 Unscrew the two screws 45 to remove the 2nd tray connector 6 0 ee rm Cp ED Unscrew the screw 2 then remove the duplex Assy ground contact 8 Figure 2 3 40 Printer Tray Right Guide Assy 41316401TH Rev 9 61 2 3 41 Fuser Unit 1 Open the top cover Oki Data CONFIDENTIAL 2 Push the right and left fuser levers blue 2 in the arrow direction to detach the fuser unit 3 Figure 2 3 41 Fuser Unit 41316401TH Rev 9 62 2 3 42 Belt Unit 1 Open the top cover 2 Remove the 1 0 unit Oki Data CONFIDENTIAL 3 Push the lever blue in the arrow direction raise the handle blue and detach the belt unit Handle blue Figure 2 3 42 Belt Unit 41316401TH Rev 9 63 2 3 43 Duplex Unit Oki Data CONFIDENTIAL 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 duplex uni
63. ck to the display of 1 Upper Display TOTAL SHEETS FED Lower Display kkkkkkkk PRINTS Format Prints Shows the total number of sheets fed including blank paper BLACK IMPRESSIONS kkkkkkkk IMAGES Converts the total number of revolutions of each color s ID into a count in letter paper sheets to set it Image YELLOW INPRESSIONS MAGENTA IMPRESSIONS CYAN IMPRESSIONS kkkkkkkk IMAGES kkkkkkkk IMAGES kkkkkkkk IMAGES Image 41316401TH Rev 9 82 3 1 2 9 Error Messages and their Details Error Messages Oki Data CONFIDENTIAL Error Message Details BLACK DRUM UP DOWN ERROR Black ID up down error BLACK DRUM UNIT FUSE CUT ERROR Black ID unit fuse cut error BLACK TONER SENSOR ERROR Black toner sensor error BLACK D HEAD ERROR Black LED head error BLACK TONER LOW Black toner is low BLACK TONER EMPTY Black toner is empty BLACK DRUM LIFE OVER Black ID life is over BLANCE ERROR Balance error BELT LIFE OVER Belt life is over BELT UNI USE CUT ERROR Belt unit fuse cut error BELT REFLECTION ERROR Belt reflection error BRK INST EXECUTE BRK instruction s executed CYAN DRUM UP DOWN ERROR Cyan ID up down error CYAN DRUM UNIT FUSE CUT ERROR Cyan ID unit fuse cut error CYAN TONER SENSOR ERROR Cyan toner sensor error CYAN LED HEAD ERROR Cyan
64. d 2 Does the error repeat Turn off on the printer Replace the Drum Assy Service Call 150 Error 153 Error Fuse in the ID unit has not been blown Is the ID unit mounted properly Confirm the cable connection or replace the Engine board Service Call 154 Error Fuse in the Belt unit has not been blown Is the Belt unit mounted properly Confirm the cable connection or replace the Engine board Service Call 155 Error Fuse in the Fuser unit has not been blown Is the Fuser unit mounted properly Confirm the cable connection or replace the Engine board Service Call 160 Error 163 Error Error detected by Toner sensor 1 Is the error message displayed 2 Does the error repeat Replace Toner sensor or Assy Y71 PWB Same as the above Service Call 170 Error 171 Error 174 Error 175 Error Short or open circuit detected at the Fusert hermistor H or L temperature error 1 Is the error message displayed 2 Does the error repeat Turn off on the printer Replace the Thermistor and turn off the printer Leave it for 30 min Service Call 172 Error 176 Error High temperature error detected at Thermistor 1 Is the error message displayed 2 Does the error repeat Turn off on the printer Replace the Thermistor and turn off the printer Leave it for 30 min Service Call 173 Error 177 Error Low temperature erro
65. ded on the LCD liquid crystal display of the operator panel Perform appropriate troubleshooting according to messages on the LCD Failure Flowchart No Printer Malfunction after Turn on Jam Error Paper Loading Jam 1st tray Paper Loading Jam Multipurpose tray Paper Feed Jam Paper Exit Jam2 4 DUPLEX Jam Paper Size Error I D Up and Down Operation Error Fuser Unit Error Motor Fan Error Note When replacing the engine board 71K PWB demount the EEPROM chip on the board and mount it on a new board 2 CU Assy troubleshooting The CU Assy does not operate Is the error message displayed YES Follow the message procedure for handling the error NO 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 5V Vacant PANEL 5pin NO Replace the power supply voltage YES Check the PU board and the operator panel board YES 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 Y ves Replace the CU board Demount the EEPROM from the board and mount it on a new board 41316401TH Rev 9 100 Oki Data CONFIDENTIAL D The printer does not operate properly after power on e Turn the printer off and on again 15 numumumummmmm showing on the LCD about for one second Leaded melded maf me mel a
66. e Figure 5 2 No Connect the ID unit terminal s to the contact Assy properly Y ves Replace the image drum unit s Notes 1 Whenreplacing 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 3 2 2 41316401TH Rev 9 113 Oki Data CONFIDENTIAL 8 Blank Page Figure 5 2 Arethe LED head Assys connected to the junction board Y71 PWB andthe engine board 71K PWB properly No Connect the LED Assy s to the junction board Y71 PWB and the engine board 71K PWB properly checking the cable connection Y Yes Is 3 8V output to the following power connector pins of the junction board Y71K PWB 3 8V Pins 1 to 8 t Yes 15 3 8V outputto 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 pin 3 LED head Assy Black No Replace the junction board Y71 PWB Yy Yes Replace the LED head Assy s after checking the cable connection y 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 Y Yes Is 32V output to the HVOLT connector pin 5 of the engine board 71K PWB No Replace the engine board Y Yes Replace the high voltage
67. e power unit Y Yes Replace the engine board after checking the cable connection Y Yes Do the IDU sensor terminals operate properly No Replace the defective gear or sensor terminals after checking the gear engagement and the sensor terminal operation Yy Yes 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 Yes Replace the engine board after checking the cable connection between connection board N71 PWB and the engine board 71K PWB 41316401TH Rev 9 108 Oki Data CONFIDENTIAL Fusing Unit Error e Has the fuser error occurred immediately after power on Yes 15 the heat roller thermistor broken or short circuited See Figure 5 1 approx 190k to 980kQ at room temperatures of 0 to 43 C e Yes Replace the fuser unit Y No Isthe backup roller thermistor broken or short circuited See Figure 5 1 Approx 190k to 980kQ at room temperatures of 0 to 43 C e Yes Replace the fuser unit PER No Y No Has the fuser unit error occurred three minutes after power on No Goto T Is the heater of the fuser unit on Is it hot Yes Replace the engine board No Replace the fuser unit Y No Is AC voltage output between the CN1 con
68. e printed Reset the fuser counter is displayed Transfer Belt Unit Belt Unit Time when 60 000 pages are printed Reset the belt counter is displayed Note The The above periodic parts replacement is performed by users 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 Cleaning LED Lens Array When white belts or lines void light 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 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 41316401TH Rev 9 93 Oki Data CONFIDENTIAL 5 TROUBLESHOOTING PROCEDURES 5 1 Before Troubleshooting 1 Check the basic check items covered in the user s manual 2 Obtain much information about problems from users whenever possible 3 Perform inspections in conditions close to those in which problems occurred 5 2 Checking before Troubleshooting Image Problems 1 Is the printer operating environment proper 2 Has the consumables toner drum cartridges bee
69. ecified cassette 2 Does the Paper out sensor operate normally Load papers in the specified cassette Replace the Paper out sensor of the specified cassette Replace Belt The belt counter has reached the life value 1 Is the error message displayed 2 Does the error occur soon after Belt unit replacement Check the belt life Replace the Belt unit immediately or at the next maintenance Replace Fuser The fuser counter has reached the lifevalue 1 Is the error message displayed 2 Does the error occur soon after Fuser unit replacement Check the fuser life Replace the Fuser unit immediately or atthe next maintenance Job Offset Home Error The Job offset assy does not operate or cannot detect the home position Does the Job offset assy operate normally Replace the Job offset sensor Replace the Job offset motor or Engine board Running Short of Paper in Tray Running short of paper detected Does only small mount of papers approx 30 sheets or less remain Load papers Check the Paper near end sensor Disc Operation Error HDD cannot be written Is the operating procedure correct Confirm the procedure in the manual Replace the HDD as it is broken 41316401TH Rev 9 99 Oki Data CONFIDENTIAL 5 5 2 Preparation for troubleshooting 1 Display on operation panel The failure status of the printer is provi
70. ect order may damage the parts 6 Small parts such as screws and collars tend to get lost so temporarily place and fix them in their original positions 7 When handling ICs and circuit boards such as microprocessors ROMs and RAMs do not use gloves that likely to have static 8 Do not place the printed circuit boards directly on the printer or the floor 41316401TH Rev 9 12 Maintenance Tools Oki Data CONFIDENTIAL Table 2 1 lists tools necessary to replace the printed circuit boards and the units Table 2 1 Maintenance Tools Maintenance Tools No 1 100 Philips screwdriver Screws of 2 to 2 5mm No 2 200 Philips magnetic screwdriver Screws of 3 to 5mm No 3 100 screwdriver No 5 200 screwdriver Digital multimeter Pliers Handy cleaner LED Head cleaner P N 4PB4083 2248P001 LED head cleaning High voltage probe 41316401TH Rev 9 13 Oki Data CONFIDENTIAL Parts layout 2 2 Figure 2 1 14 41316401TH Rev 9 Oki Data CONFIDENTIAL Top Cover Assy Figure 2 2 194 41316401TH Rev 9 Oki Data CONFIDENTIAL Printer Unit 1 2 Figure 2 3 16 41316401TH Rev 9 Oki Data CONFIDENTIAL Printer Unit 2 2 Figure 2 4 41316401TH
71. ed from the Cassette 1 2 3 4 or 5 1 Does misfeed occur in the specified cassette Remove the jammed paper and install the cassette Check the Cassette 1 2 3 4 or 5 or replace it Open Stacker Cover 381 Paper Jam Paper jam detected btwn the B ID and Fuser 1 Is a paper jammed between the Y ID and Fuser 2 Is the load on the Fuser unit normal Remove the jammed paper Replace the Fuser unit Open Stacker Cover 382 Paper Jam Paper jam detected in the Fuser unit or btwn the Fuser and paper ejection 1 Is a paper jammed in the Fuser unit or between the Y ID and Fuser unit 2 Is the Paper eject switch work normally Remove the jammed paper Replace the Fuser unit Open Stacker Cover 383 Paper Jam Paper jam detected on paper entering the Duplex unit 1 Is a paper jammed at the entrance of the Duplex unit or in the unit Remove the jammed paper and close Check the Duplex unit or replace it Paper jam during paper feed from the MP Tray 1 Does misfeed occur around the MP Tray Remove the misfed paper and close the cover Check the MP Tray or replace it Paper jam detected btwn a cassette and the B ID 1 Is a paper jammed around the cassette or between the B ID and cassette 2 Does the Paper entry switch operate normal Remove the jammed paper Replace the Paper entry switch Open Stacker Cover 400 Paper Size Error Paper i
72. eeded basis 6 Touch the 4 key to end the test the display is restored to step 1 41316401TH Rev 9 80 Oki Data CONFIDENTIAL 3 1 2 6 NVM initialization The self diagnosis is used to initialize non volatile memory 1 Enterthe self diagnosis Level 1 mode and continue to press the and keys until NV RAM INITIAL appears on the upper display the key is for test item increment and the 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 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 3 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 Table 3 3 1 2 Initialization Items in Table 1 Initialization Item Detail Initial Value Drum Counter Black Initializes the internal counter after the replacement of Yellow each drum Magenta Cyan Belt Unit Counter Initializes the internal counter after the replacement of the belt unit Fuser Unit Counter Initializes the internal counter after the replacement of the fuser unit Toner Counter Black X Initializes the internal counter after the recovery from Yellow leach toner low error M
73. ey ends the tests the display is restored to step 1 41316401TH Rev 9 7541 Oki Data CONFIDENTIAL Main motor H Main motor Y Main motor Fuser REN A Main motor K Belt motor amp 2 KA AAN K gt i g x m D 27 9 a Registration motor i i INS gt op JG 5 gt Registration clutch 7 Cassette1 hopping motor EF E T N Cassette2 clutch 5 Duplex motor Cassette2 motor SS 2 2 Sensor shutter Cassette3 clutch Cassette3 motor ER Su A Figure 3 3 Table 3 2 Unit Name Display Driving Constrains Constraints Display BLACK ID MOTOR Remove all the IDs B Y M and C to drive the unit REMOVE ID YELLOW ID MOTOR MAGENTA ID Remove all the IDs B Y M and C to drive the unit REMOVE ID MOTOR Remove all the IDs B Y M and C to drive the unit REMOVE ID CYAN ID MOTOR Remove all the IDs B Y M and C to drive the unit REMOVE ID BELT MOTOR Remove all the IDs B Y M and C to drive the unit REMOVE ID FUSER MOTOR REGISTRATION MOTOR MAIN FEEDER MOTOR Remove the cassette 1 to drive the
74. fle 3 Figure 2 3 7 Cassette Assy Front Cover Assy Front Cover Inner Baffle 41316401TH Rev 9 28 2 3 8 Retard Pad Assy Retard Pad Assy Spring 1 Remove the cassette 1 Oki Data CONFIDENTIAL 2 Detach the retard pad Assy 2 at the same time the spring becomes detached Figure 2 3 8 Retard Pad Assy Retard Pad Assy Spring C 41316401TH Rev 9 29 2 3 9 Feed Roller and Nudger Roller 1 Remove the cassette 2 Unlatch and demount the feed roller 3 Unlatch and demount the nudger roller N x Figure 2 3 9 Feed Roller and Nudger Roller Oki Data CONFIDENTIAL 41316401TH Rev 9 30 2 3 10 Rear Cover 1 Remove the left side cover see section 2 3 12 2 Remove the four screws 2 to detach the rear cover 1 Oki Data CONFIDENTIAL Note When attaching the rear cover take care not to allow the spring 3 to get caught in parts Figure 2 3 10 Rear Cover 41316401TH Rev 9 31 2 3 11 Face Up Tray 1 Open the face up tray D in the arrow direction and disengage it at d N f N Oki Data CONFIDENTIAL two places to detach it 20 2 II Figure 2 3 11 Face Up Tray 41316401TH Rev 9 32 2 3 12 Left Side Cover 1 Open the top cover 2 Open the front cove
75. ght 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 No Setthe MEDIA TYPE correctly Y No Are the LED head Assys connected to the junction board Y71 PWB properly No Connect the LED head Assy s to the junction board Y71 PWB properly Y Yes Is 3 8V output to the following power connector pins of the junction board Y71 PWB 38V Pins 1 to 8 Yes 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 Cyan KPOW connector pin 3 LED head Assy Black No Replace the junction board Y71 PWB Y Yes Replace the LED head Assy after checking the cable connection Y No Replace the low voltage power unit after checking the cable connection Has the problem been corrected Yes End Y No Is 32V supplied to the power connector of the engine board 71K PWB 32V Pins 7 to 10 No Replace the low voltage power unit after checking the cable connection Y ves Is 32V supplied to the power connector pin of the engine board 71K PWB No Replace the engine board T Yes Replace the high voltage power unit or the belt cassette Assy after checking the cable connection Has the problem been corrected Yes End Y No Are the terminals of the ID units connected to the contact Assy properly Se
76. hardware error HUMIDITY SENSOR ERROR Humidity sensor error HOPPING ERROR TRAYI Zrayl hopping error HOPPING ERROR TRAY2 Tray hopping error HOPPING ERROR TRAYS Trays hopping error HOPPING ERROR FRON LEDER Front feeder hopping error 41316401TH Rev 9 83 Oki Data CONFIDENTIAL Error Message Details HOPPING ERROR DUPLEX Duplex unit hopping error HOPPING ERROR TRAY4 PX703 Iray4 hopping error HOPPING ERROR TRAYS PX703 Trays hopping error INPATH FEED Feed jam INPATH TRANSPORT Transport jam INPATH EXIT Exit Jam INPATH s DUPLEX INPUT Duplex unit input jam INPATH DUPLEX ENTRY Duplex unit entry jam INPATH DUPLEX REVERSAL Duplex unit reversal jam INFEED TRAYI Trayl hopping error INFEED TRAY2 Tray2 hopping error INFEED TRAYS Zray3 hopping error JINFEED FRONT FEEDER Front feeder hopping error JINFEED DUPLEX Duplex unit hopping error INFEED TRAY4 PX703 Iray4 hopping error INFEED TRAYS PX703 Trays hopping error INITIALIZING Initializing after turning on the printer INITIALIZING Initializing after a cover is opened closed INITIALIZING REGISTRATION ADJUST Initializing after automatic color registra JAM FEED Feed jam JAM TRANSPORT Transport jam JAM EXIT Exit Jam JAM DUPLEX INPUT Duplex unit i
77. he products are maintained by maintenance men registered with Oki Data 41316401TH Rev 9 3 Oki Data CONFIDENTIAL CONTENTS 1 CONFIGURATIONS aa shan nn 7 1 1 System Configuration 7 1 24 Printer Configuration ar ciet ee Me He 8 1 3 Option Configuration 9 1 4 ZSPEEICatloOns 5 ege ptc e ipt elle e bsec 10 2 PARTS REPLACEMENT iiic cina ee ar 12 2 1 Precautions in Replacing nennen 12 22 Rans layou te etie ue 14 2 9 Replacing Pans ena neas ei one eoe ee quat rede v Een a cu gt da 20 230 TOP COVEr dee 22 2 3 2 LED Assy LED Assy SPNG 23 2 3 3 Top Gover Uhit rause ei e e rei 24 2 3 4 Control Panel Assy Control Panel Bezel LED Control PWB Toner Sensors 2 3 5 2 3 6 2 3 7 2 3 8 2 3 9 2 3 10 2 3 11 2 3 12 2 3 13 2 3 14 2 3 15 2 3 16 2 3 17 2 3 18 2 3 19 2 3 20 2 3 21 2 3 22 2 3 23 2 3 24 2 3 25 2 3 26 2 3 27 2 3 28 2 3 29 2 3 30 2 3 31 2 3 32 2 3 33 Stacker Full Sensor Control Panel Control Panel Tape Harness Eject Rollers jac deci cuttin er len e i ide 25 Top Cover Handle Top Cover Latch Top Cover Latch Spring 26 ARENO EAEE E Reef p Re tee dir 27 Cassette Assy Front Cover Assy Front Cover Inner Baffle
78. i Data CONFIDENTIAL 2 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 Figure 2 3 15 Drum Contact Assys 41316401TH Rev 9 36 2 3 16 Registration Roller Assy A Registration Drive Gear A 1 Remove the left side cover see section 2 3 12 2 Remove the right side cover see section 2 3 13 3 Remove the multipurpose tray see section 2 3 14 4 Remove the four screws 1 to demount the registration roller Assy A 5 Remove the E ring 3 to detach the registration gear A Oki Data CONFIDENTIAL Figure 2 3 16 Registration Roller Assy A Registration Driver Gear A 41316401TH Rev 9 37 Oki Data CONFIDENTIAL 2 3 17 Registration Roller Assy B 1 gt 5 7 Ra I I RR QD Remove the cassette Assy Open the front cover Remove the right side cover see section 2 3 13 Remove the left plate Assy see section 2 3 22 Remove the registration clutch see section 2 3 18 Unscrew the four screws D and pull out the registration Assy in the arrow direction Figure 2 3 17 Registration Roller Assy B 41316401TH Rev 9 38 Oki Data CONFIDENTIAL 2 3 18 Registration Clutch and Registration Motor Assy Remove the left side cover see section 2 3 12
79. i Data CONFIDENTIAL 2 3 34 Main Feeder Drive Motor 1 Remove the two screws 1 to detach the main feeder drive motor 2 Unscrew the screw 3 to remove the main feeder drive motor bracket 3 Remove the main feeder drive motor gears A and B SEN e Figure 2 3 34 Main Feeder Drive Motor 41316401TH Rev 9 55 Oki Data CONFIDENTIAL 2 3 35 Contact Assy Left Plate Assy 1 Remove the printer unit chassis see section 2 3 24 2 Remove the four screws 1 to detach the left plate Assy 3 Remove the screw 3 to detach the contact Assy 4 Figure 2 3 35 Contact Assy Left Plate Assy 41316401TH Rev 9 56 2 3 36 Low Voltage Power Supply Remove the printer unit chassis see section 2 3 24 Unhook the connector 1 Unscrew the screw 2 to remove the earth cable 3 Unscrew the six screws 4 to demount the low voltage power supply Figure 2 3 36 Low Voltage Power Supply Oki Data CONFIDENTIAL 41316401TH Rev 9 57 2 3 37 High voltage power supply 1 Remove the contact Assy see section 2 3 35 2 Unhook the connector of the high voltage power supply Oki Data CONFIDENTIAL 3 Remove the two screws 1 to detach the high voltage power supply 2 and the tape harness 3 Figure 2 3 37 High Voltage Power Supply 41316401TH Rev 9 58 2 3 38 Main Feed Assy nr N
80. l PWB Tape Harness wo wo aoj Qo 140346704 R Ejeet Roller 41765601 Eject Roller DD K ECO C7400 033 40860601 Toner Sensor Aa N 40866101 Control Panel Assy 40866201 Control Panel Bezel 600dpi 40866202 Control Panel Bezel 1200dpi 2381005P00 5 GeontroHPaneHTFape Harness 2381003P0014 Control Panel Tape Harness ECO C7400 001 40861501 Eject Guide Assy oa wo 2251001P0260 26pin LED Connector A N 4PB4083 2500P008 Screw T3x8 41733701 Gear Inner ECO C7400 005 41778001 Gear Inner ECO C7400 024 41316401TH Rev 9 140 Oki Data CONFIDENTIAL x Figure 7 3 1 2 41316401TH Rev 9 141 Oki Data CONFIDENTIAL Figure 7 3 2 2 41316401TH Rev 9 142 Table 7 3 1 2 Printer Unit Chassis Parts No Recommended Q ty Year Oki Data CONFIDENTIAL Remarks 41189701 Drum contact Assy 40844301 Registration Roller Assy A 40844303 Registration Roller Assy B 40845401 Registration Drive Gear 41187101 Registration Clutch 40845801 Registration Motor Assy 3PB4076 5290P001 Main Cooling Fan 41
81. l mae No Y Yes Y no Y Yes T Yes Y No Y 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 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 Is the 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 v 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 41316401TH Rev 9 101 Oki Data CONFIDENTIAL
82. n a size different 45 mm or more from the specification detected at the Printer engine 1 Is the paper in a custom size 2 Is the paper in the standard size No action required Adjust the Paper size guide of the cassette Replace the Paper size board PXC PWB Toner Low 410 Yellow 411 Magenta 412 Cyan 413 Black Toner in one of the four colors is running short 1 Is the specified toner cartridge almost empty 2 Does the Toner sensor of the specified cartridge operate normally Replace it with a new toner kit Replace the Toner sensor for the specified color Remove Printed Papers 480 Stacker Full The stacker for ejected papers is full 1 Is the stacker full 2 Does the Stacker full sensor operate normally Remove papers from the stacker Replace the Stacker full sensor 41316401TH Rev 9 98 Message Load Papers 490 No paper in the MP Tray M B5 etc The specified cassette has no paper or is removed Or the cassette be ingused for printing has no more paper Table 5 1 1 Operator Alarms 5 5 Error Description 1 No paper in MT 2 Does the Paper out sensor operate normally Oki Data CONFIDENTIAL Solutions Load papers in MT Replace the Paper out sensor Load Papers 491 495 No paper in the Tray M B5 etc No paper in the Cassette 1 2 3 4 or 5 detected 1 No paper in the sp
83. n replaced properly 3 Is the paper proper Refer to the paper specification 4 Are the image drum cartridges placed properly 5 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 5 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 se corrective actions according to messages appeared on the LCD 5 5 Troubleshooting When problems occur in the printer troubleshoot them using the following procedure A problem occurred Problem shown by Perform troubleshooting Perform close troubleshooting gt LCD message gt using the LCD message list 9 using the troubleshooting see Section 5 5 1 flowchart see Section 5 5 2 Image problem or Perform close troubleshooting gt Problem not shown gt using the troubleshooting by LCD message flowchart see Section 5 5 3 41316401TH Rev 9 94 5 5 1 LCD messages list Oki Data CONFIDENTIAL When detects unrecoverable errors the printer provides the following service call error message Service Call nnn Er
84. nd f 363kQ at 25 C TYLLNSGI4NOO MO 6 2 Program Font ROM Layouts 1 Print Engine Controller PWB 71K PWB Oki Data CONFIDENTIAL SHUTTER HOPFF RCL LE 1 8 ID 3 g 13 5 e ske m SINE FU4 FU2 m gh a 70 a lt 2 3 e m o 9 Q FUS S ru E qu 3 amp 00888 1 ii FU502 o If Solder side Em U he p Zi Zi 3 Sin Lo 0 mi CPUFL1 2 rd 2 o c 88g Q ag m e an o SILI S EEPROM L z m me wn m Fa 2 FCOVER DUPLEX PSIZE 4 50 HVOLT COVOPN POWER 41316401TH Rev 9 129 Oki Data CONFIDENTIAL 2 Main Controller PWB
85. ne black or color belt or black or color line Figure 5 2 D Vertical white belt or line or uneven color belt or line Figure 5 2 Poor fusing ink spreads or peels when touched with fingers Defective image of regular interval Figure 5 2 E Missing image Color misalignment Color different from original one Light or faded image Dirty Background Blank on whole page DUSIN DUSIN sf a D Vertical black belt Defective image of D Vertical white belt or line or line regular interval Figure 5 2 41316401TH Rev 9 111 Oki Data CONFIDENTIAL D Light or Faded Image on Whole Page or Color Misalignment on Whole Page Figure 5 2 A Are toners running short is toner low displayed Yes Supply toner s Yy No Is proper paper used No Use proper paper Y ves Are the LED head lenses dirty Yes Clean the dirty lens es Yy No Are all the LED head Assys connected to the junction board Y71 PWB and the engine board 71K PWB properly No Connect the cable between the LED head s and the engine board properly checking the cable connection Y Yes Is 3 8V output to the following power connector pins of the junction board Y71 PWB 3 8V Pins 1 to 8 Yes 15 3 8V output to the LED head Assys from the junction board Y71 PWB YPOW connector pin 3 LED head Assy Yellow MPOW connector
86. nector pin1 and pin3 of the low voltage power unit No Replace the low voltage power unit Yes Replace the fuser unit Figure 5 1 41316401TH Rev 9 109 Oki Data CONFIDENTIAL 6 Motor Fan Error Does the low voltage power supply fan run after power on No 15 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 unit after checking the cable connection Yes Replace the engine board Y Yes Has the low voltage power supply fan replaced Yes End Y No Replace the low voltage power supply fan Y Yes Does the engine board fan rotate after power on No 15 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 T Yes Replace the fan of the engine board Yes End 41316401TH Rev 9 110 5 5 3 Troubleshooting image problems Following is the troubleshooting for image problems illustrated below Oki Data CONFIDENTIAL Image problem Flowchart No Light or faded image on whole page or color misalignment on whole page Figure 5 2 A Dirty background Figure 5 2 B EO Blank page Figure 5 2 C Vertical belt or li
87. ness Y 41309601 LED Harness 41593101 LED Control PWB Tape Harness wo wo aoj Qo 140346704 R Ejeet Roller 41765601 Eject Roller DD K ECO C7400 033 40860601 Toner Sensor Aa N 40866101 Control Panel Assy 40866201 Control Panel Bezel 600dpi 40866202 Control Panel Bezel 1200dpi 2381005P00 5 GeontroHPaneHTFape Harness 2381003P0014 Control Panel Tape Harness ECO C7400 001 40861501 Eject Guide Assy oa wo 2251001P0260 26pin LED Connector A N 4PB4083 2500P008 Screw T3x8 41733701 Gear Inner ECO C7400 005 41778001 Gear Inner ECO C7400 024 41316401TH Rev 9 Oki Data CONFIDENTIAL x Figure 7 3 1 2 41316401TH Rev 9 Oki Data CONFIDENTIAL Figure 7 3 2 2 41316401TH Rev 9 Table 7 3 1 2 Printer Unit Chassis Parts No Recommended Q ty Year Oki Data CONFIDENTIAL Remarks 41189701 Drum contact Assy 40844301 Registration Roller Assy A 40844303 Registration Roller Assy B 40845401 Registration Drive Gear 41187101 Registration Clutch 40845801 Registration Motor Ass
88. nnection control in each mode Storing of data from host in receive buffer Busy control Signal Read control a Timing for receiving data PARALLEL DATA DATA BITs 1 to 8 nStrobe BUSY nAck 0 5 us min 0 5 us min 4 0 5 us min 0 5 us to 3 us me 0 min b On line Timing for switching to off line by on line SW ON LINE SW TT BUSY SELECT 100 ms max 41316401TH Rev 9 151 Oki Data CONFIDENTIAL Off line Timing for switching to on line by on line SW ON LINE SW je A BUSY III CU n 7 SELECT ACKNOWLEDGE d timing under enabling input prime signal By menu setting 50 us min INPUT PRIME BUSY SELECT 5us max ACKNOWLEDGE Nibble Mode IEEE 1284 specification compliant ECP Mode IEEE 1284 specification compliant 41316401TH Rev 9 152 Oki Data CONFIDENTIAL APPENDIX B 2ND 3RD TRAY MAINTENANCE 1 Parts Replacement 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 41316401TH Rev 9 153 1 2 PCB 1 Unscrew the four screws 1 to remove the plate cover PCB Oki Data CONFIDENTIAL 2 Remove the connectors at seven places and the two screws 3 then demount the board 2 41316401TH Rev 9 154 1 3 Feeder Drive Assy
89. nnnnnnnnnnnnnnnnnnnnnn 89 3 2 3 EEPROM replacement after SWA board 90 3 3 Color Balance Adj stment 2 rtr rt reitera lee iieiea 91 4 PERIODIC MAINTENANCE 2 220000 crono uude Cree cutn ao ann ande 93 4 1 Parts Replaced Periodically 93 4 2 TG 6 NNG EM 93 4 3 Cleaning LED Lens Array 93 4 4 Cleaning Pickup Roller uuunrsesnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennn nenn 93 5 TROUBLESHOOTING PROCEDURES cessere 94 5 1 Before Troubleshooting i EAE AA 94 5 2 Checking before Troubleshooting Image 94 5 3 Precautions in Troubleshooting Image Problems 94 41316401TH Rev 9 5 Oki Data CONFIDENTIAL 5 4 Preparation for Troubleshooting usr 424444ernensnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nenn nn 94 5 5 Troubleshooting ee arte cerunt me AAAA 94 5 511 lt ECD messages list 22a 95 5 5 2 Preparation for troubleshooting ssee 100 5 5 3 Troubleshooting image problems seenm ene 111 6 CONNECTION DIAGRAM iau na etna ne ta tuna cca 125 6 11 Resi
90. nput jam JAM DUPLEX ENTRY Duplex unit entry jam JAM DUPLEX REVERSAL Duplex unit reversal jam OWER HEATER LOW TEMPER Lower heater low temperature error LOWER HEATER HIGH TEMPER Lower heater high temperature error OWER HEATER OPEN ERROR Lower heater thermistor open circuit error LOWER HEATER SHORT ERROR Lower heater thermistor short circuit error D HEAD OVER HEAT LED head overheat error OWER COVER OPEN Left lower cover 1s open UPPER COVER OPEN Left upper cover is open MISSING ERROR Part missing error FINISHER I F ERROR Finisher I F error MISSING BELT UNIT Belt unit is not mounted MISSING FUSER UNIT Fuser unit is not mounted MISSING BLACK DRUM Black ID is not mounted MISSING CYAN DRUM Cyan ID is not mounted MISSING MAGENTA DRUM Magenta ID is not mounted MISSING YELLOW DRUM Yellow ID is not mounted MAGENTA DRUM UP DOWN ERROR Magenta ID up down error MAGENTA DRUM UNIT FUSE CUT ERROR Magenta ID unit fuse cut error MAGENTA TONER SENSOR ERROR Magenta toner sensor error MAGENTA D HEAD ERROR Magenta LED head error MAGENTA IRREGULAR ERROR Magenta detected value error MAGENTA REGISTRATION OUT LEFT Magenta out of registration value error Let MAGENTA REGISTRATION OUT RIGHT Magenta out of registration value error Rig MAGENTA SENSOR ERROR L
91. o not use items other than those in the level 1 3 1 2 1 Operator panel Operational descriptions about the self diagnosis are premised on the following operator panel layout w OKI C7200 ES aa A 3 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 Execution NVM Initialization Consumable Counter Display Consumable Counter Display Continuous 3 1 2 2 1 Entering self diagnosis mode level 1 1 Detach the main controller board 2 While holding the and 4 keys down at the same time turn the power on to enter this mode ENGINE DIAG MODE XX XX 3 ENGINE DIAG MODE XX XX appears in the upper display XX XX shows the version of ROM 4 Goto each self diagnosis step by using the and keys pressing 1 and keys rotates the menu items 3 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 41316401TH Rev 9 71 Oki Data CONFIDENTIAL 3 1 2 3 Switch scan test This self diagnosis is used when the input sensor and the switch are checked 1 Enter the general diagnosis mode and press and hold the Dand keys down until SWITCH SCAN appears on the upper display the key increments a test item and the key decrement
92. oor Fusing Ink spreads or peels when touched with fingers s proper paper used No Use proper paper T Yes Is the contact of the fuser unit connected properly No Connect the contact of the fuser unit properly Yy Yes Is the roller of the fuser unit dirty Yes Replace the fuser unit Assy y No 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 No Selectthe MEDIA TYPE correctly Y Yes Is AC voltage output between the CN connector pin1 and pin 3 of the low voltage power unit No Replace the low voltage power unit Y Yes Does the resistance of the heat roller thermistor lie at the rated voltage See Figure 5 1 Approx 190k to 980kQ at room temperatures of 0 to 43 C No Replace the fuser unit T Yes Does the resistance of the backup roller thermistor lie at the rated voltage See Figure 5 1 Approx 190k to 980kQ at room temperatures of 0 to 43 C No Replace the fuser unit Y Yes 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 BFH to 6BH Backup Roller Lower 125 to 135 C 48H to 53H No Replace the fuser unit Assy 4 Yes Replace the fuser unit Assy Notes 1 When replacing the engine board 71K PWB demount the EEPROM from the board and mount it on a new board 2
93. perly Can the printer recover from the error by replacing the RAM DIMM Use a genuine RAM DIMM Re install the concerned RAM DIMM Replace the RAM DIMM Replace the SWA board The EEPROM needs replacement Service Call 037 Error Slot3 RAM Spec Error The CU RAM Slot3 DIMM specification is notsupported Is the RAM DIMM a genuine part Is the concerned RAM DIMM installed properly Can the printer recover from the error by replacing the RAM DIMM Use a genuine RAM DIMM Re install the concerned RAM DIMM Replace the RAM DIMM Replace the SWA board The EEPROM needs replacement Service Call 038 Error Slot4 RAM Spec Error The CU RAM Slot4 DIMM specification is notsupported Is the RAM DIMM a genuine part Is the concerned RAM DIMM installed properly Can the printer recover from the error by replacing the RAM DIMM Use a genuine RAM DIMM Re install the concerned RAM DIMM Replace the RAM DIMM Replace the SWA board The EEPROM needs replacement 41316401TH Rev 9 95 Message Service Call 040 Error CU EEPROM Error Table 5 1 1 Operator Alarms 2 5 Error Description Can the printer recover from the error by replacing the EEPROM on the CU board Oki Data CONFIDENTIAL Solutions Replace the EEPROM Settings of the user must be restored on the new Replace the SWA board The EEPROM needs replacement Service Call 041
94. 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 Y Yes Replace the LED head Assy s after checking the cable connection Y No Replace the low voltage power unit after checking the cable connection Has the problem been corrected Yes End Y No Is 32V output to the power connector of the engine board 71K PWB 32V Pins 7 to 10 No Replace the low voltage power unit after checking the cable connection Y ves Is 32V output to the HVOL T connector pin 5 of the engine board 71K PWB No Replace the engine board Y ves Replace the high voltage unit or the belt cassette Assy after checking the cable connection Has the problem been corrected Yes End Y No Are the terminals of the ID units connected to the contact Assy properly See Figure 5 2 No Connect the ID unit terminal s to the contact Assy properly Y Yes Replace the image 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 3 2 2 41316401TH Rev 9 112 Oki Data CONFIDENTIAL Dirty Background Figure 5 2 B Were the image drums exposed to external light for a long time Yes Replace the ID unit s Y No Is the roller of the fuser unit dirty Yes Replace the fuser unit Y Correct the PAPER TYPE setting Li
95. pring 40850201 40841501 41067201 Contact Assy 2 3 35 Fuser Latching Handle Spring 2 3 32 Fuser Drive Gear C 2 3 28 41303601 40323901 Left Plate Assy 2 3 35 Fuser Exit Roller 2 3 28 40866301PA I 40316301 Multipurpose Tray Cover Assy 2 3 14 Fuser Drive Gear B 2 3 28 40864301 4PP4076 3949P001 Rear Cover 2 3 10 Fuser Exit Roller Bushing L 2 3 28 40864401 4PP4043 4489P001 Left Side Cover 2 3 12 Fuser Exit Roller Bushing R 2 3 28 40864501 I 41189701 x 4 Right Side Cover 2 3 13 Drum Contact Assy 2 3 15 40864601 I 41258301 Front Cover Assy 2 3 7 Entrance Sensor PWB 2 3 26 41042501 41312801 Front Cover Inner Baffle 2 3 7 Left Top Cover Spring Assy 2 3 24 I 1PA4128 1074G001 41312901 Face Up Tray 2 3 11 Right Top Cover Spring Assy 2 3 24 40864901 PA I 40346801 Frame Assy Release Color Registration Sensor Assy 2 3 20 41073601 Exit Sensor Assy 2 3 29 41316401TH Rev 9 20 A Oki Data CONFIDENTIAL CU Board Assy 41395303 41716809 41644801 Board Assy CU Board_SWA PCB Assy_SWA 41848501 41356111 Board Assy CU Maintenance Board TNO 41278601 x 2 41437402 Guide Rail A Board Memory 64MB 41278701 Guide Rail B 41410201 Motor Fan 60x60x15 41278401 x 2 Screw PB4013 3100P006 x10 Cup Screw S Tight M3 P3 6G x 2 Screw Round
96. pring 2 3 40 Foot 2 3 39 4PB4016 1960P002 x 2 Foot 2 3 40 40368304 Paper Size Sensing PWB PXC 2 3 40 4 4076 5360 001 Paper Size Actuator 2 3 40 Duplex Assy Ground contact 2 3 40 2nd Tray Connector 2 3 40 41285701PA r 41275801PA Plate Assy SW Front 2 3 40 Microswitch Assy 2 3 40 41275901PA Microswitch Assy 2 3 40 Printer Unit 40841101 40841301 I 4112801PP Printer Chassis 2 3 16 Fuser Latching Handle L 2 3 30 Insurator 40844301 I 40841501 t PB4076 5290P001 Regist Roller Assy A 2 3 16 Fuser Latching Handle Spring 2 3 30 Main Cooling Fan Assy 2 3 19 40844303 F 40841601 2381018P0001 Regist Roller Assy B 2 3 17 Entrance Sensor Actuator 1 2 3 25 HV Tape Harness 40845801 r 40841701 Registration Motor Assy 2 3 18 Entrance Sensor Actuator 2 2 3 27 41187101 40841801 Registration Clutch 2 3 18 Entrance Senspr Actuator 3 2 3 27 40859201 40842201 Duplex Guide Assy 2 3 21 Waste Toner Sensor Actuator 2 3 27 41253601 40847301 40848501 Duplex Gate solenoid Assy 2 3 28 Main Motor Assy 2 3 33 Main Feeder Drive Gear A 2 3 34 I 41253701 40846001 40846601 Registration Shutter Solenoid Assy Main Feeder Motor 2 3 34 Main Feeder Drive Gear B 2 3 34 I 41275201 Registration Shutter 40848801 40841401 I 41275301 Transport Transfer Belt Motor Assy 2 3 35 Fuser Latching Handle R 2 3 32 Registration Shutter S
97. r and undo the screw 8 3 Remove the four screws 4 to detach the left side cover 5 Figure 2 3 12 Left Side Cover Oki Data CONFIDENTIAL 41316401TH Rev 9 33 Oki Data CONFIDENTIAL 2 3 13 Right Side Cover 1 Open the top cover ew 3 2 and undo the scr 2 Open the front cover ews 4 to detach the right side cover 2 Remove the four scr Figure 2 3 13 Right Side Cover 34 41316401TH Rev 9 Oki Data CONFIDENTIAL 2 3 14 Multipurpose Tray Assy Multipurpose Tray Cover Assy Links Multipurpose Tray Top Cover Multipurpose Tray Drive Gear 1 Remove the left side cover see section 2 3 12 2 Remove the right side cover see section 2 3 13 3 Remove the left plate Assy see section 2 3 22 4 Remove the three screws 1 to detach the multipurpose tray top cover 5 Remove the three screws 3 two of them are black and the connector to detach the multipurpose tray 2 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 Figure 2 3 14 Multipurpose Tray Assy Multipurpose Tray Cover Assy Links Multipurpose Tray Top Cover Multipurpose Tray Drive Gear 41316401TH Rev 9 351 Ok
98. r detected at Thermistor 1 Is the error message displayed 2 Does the error repeat Turn off on the printer Replace the Thermistor or heater and turn off the printer Service Call 181 Error 186 Error Communication failure with an option unit detected by Engine 1 Is the error message displayed 2 Does the error repeat Turn off on the printer Replace the option unit Close Cover 310 CCCC CoverOpen A4 B4 etc Printer engine cover is open 1 Is the Top cover open 2 Does the Cover switch operatenormally Close the Top cover Close the Side cover Replace the Cover switch Check Fuser 320 Fuser Error No Fuser unit detected when turning on the printer or closing the cover 1 Is the error message displayed 2 Is the Fuser unit mounted properly 3 Does the error repeat Confirm the existence of the unit Re install the Fuser unit and turn off on the printer Replace the Fuser unit Assy Check Belt 330 Belt Error No Belt unit detected when turning on the printer or closing the cover 1 Is the error message displayed 2 Is the Belt unit mounted properly 3 Does the error repeat Confirm the existence of the unit Re install the Belt unit and turn off on the printer Replace the Belt unit Assy Check Drum 340 343 Drum Error No ID unit detected when turning on the printer or closing the cover 1 Is the error
99. rance Cassette Sensor Actuator 41316401TH Rev 9 46 Oki Data CONFIDENTIAL 2 3 26 Entrance Sensor PWB 1 Remove the registration roller Assy B see section 2 3 17 2 Remove the two screws 1 to demount the entrance sensor PWB 2 Figure 2 3 26 Entrance Sensor PWB 41316401TH Rev 9 47 2 3 27 Entrance MT Sensor Actuator and Entrance Belt Sensor Actuator 1 Remove the entrance sensor PWB R71 see section 2 3 26 2 Unlatch and detach the entrance MT sensor actuator 1 3 Unlatch and detach the entrance belt actuator Oki Data CONFIDENTIAL Figure 2 3 27 Entrance MT Sensor Actuator and Entrance Belt Sensor Actuator 41316401TH Rev 9 48 Oki Data CONFIDENTIAL 2 3 28 Fuser Exit Roller Unscrew the two screws 1 to remove the duplex gate solenoid Assy Unscrew the screw 8 to remove the fuser exit roller contact Remove the fuser drive gear A 5 and fuser drive gear A Unscrew the screw 7 to remove the fuser drive gear C 8 Unlatch and detach the fuser drive gear B 9 and fuser exit roller bush R 40 Unlatch and detach the fuser exit roller bush L 17 and fuser exit roller amp VE N e Figure 2 3 28 Fuser Exit Roller 41316401TH Rev 9 49 2 3 29 Exit Sensor Assy 1 Remove the fuser exit roller see section 2 3 28 Oki Data CONFIDENTIAL
100. rd 71K PWB 32V Pins 7 8 9 and 10 No Replace the low voltage power unit after checking the cable connection T Yes Is 32V output to the HVOLT connector pin 5 of the engine board 71K PWB No Replace the engine board 4 Yes Replace the high voltage power unit or the belt cassette Assy after checking the cable connection Has the problem been corrected Yes End Y No Are 1 0 terminals connected to the contact Assy properly See Figure 5 3 No Connect the I D terminal s to the contact Assy properly 4 Replace the I 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 3 2 2 41316401TH Rev 9 123 Oki Data CONFIDENTIAL Ground Charging roller Developing roller Toner supply roller Figure 5 3 41316401TH Rev 9 124 6 9H HLLOVOLELP Scl Transport Belt Motor Circuit Diagram Illustration Resistance Between pins 1 and 2 7 90 Between pins 3 and 4 7 90 Main Motor Y Between pins 1 and 2 4 Between pins 3 and 4 40 Main Motor M Between pins 1 and 2 40 Between pins 3 and 4 40 S499U2 eoueljsiseH 9 INVHOVIG NOILO3NNOO TWILNAGISANOO MO 6 9H HLLOTO9LIELT 92 Main Motor C Circuit Diagram Illustration Resistance Between pins 1 and 2 4 Be
101. remove the earth plate 4 O Remove the two screws 5 unhook all the connectors 6 and demount the LED control PWB 7 N Disengage the four claws to demount the toner sensor 2 Demount the stacker full sensor 43 Demount the exit rollers 5 Detach the LED harnesses Y M and C 6 Remove the screw 8 0 1 2 Detach the top cover inner frame Assy 7 Figure 2 3 4 Control Panel Assy Control Panel Bezel LED Control PWB Toner Sensors Stacker Full Sensor Control Panel Control Panel Tape Harness Eject Rollers 41316401TH Rev 9 25 2 3 5 Top Cover Handle Top Cover Latch Top Cover Latch Spring Oki Data CONFIDENTIAL 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 become detached Figure 2 3 5 Top Cover Handle Tope Cover Latch Top Cover Latch Spring 41316401TH Rev 9 26 Oki Data CONFIDENTIAL ct Guide Assy 23 6 Eje ews D to detach the eject guide Assy 2 Remove the five scr 1 ct Guide Assy Figure 2 3 6 Eje 27 1 41316401TH Rev 9 Oki Data CONFIDENTIAL 2 3 7 Cassette Assy Front Cover Assy Front Cover Inner Baffle 1 Detach the cassette Assy 2 Open the front cover 2 and disengage it at two places to detach it 3 Detach the front cover inner baf
102. ror 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 5 1 1 Message Service Call 001 Error 011 Error CPU Exception Table 5 1 1 Operator Alarms 1 5 Error Description Is the error message displayed again Is the error message displayed again Solutions Turn the printer off on Replace the SWA board The EEPROM needs replacement Service Call 020 Error CU ROM Hash Check Error 1 Is the program ROM DIMM installed properly Can the printer recover from the error by replacing the program ROM DIMM Re install the program ROM DIMM Replace the program ROM DIMM Replace the SWA board The EEPROM needs replacement Service Call 030 Error CU Slott DIMM RAM Check Error Is the concerned RAM DIMM installed properly Can the printer recover from the error by replacing the RAM DIMM Re install the concerned RAM DIMM Replace the RAM DIMM Replace the SWA board The EEPROM needs replacement Service Call 031 Error CU Slot DIMM RAM Check Error Is the concerned RAM DIMM installed properly Can the printer recover from the error by replacing the RAM DIMM Re install the concerned RAM DIMM Replace the RAM DIMM Replace the SWA board The EEPROM needs replacement Service Call 032 Error CU Slot3 DIMM
103. rtridge Type C2 C 10K ODA ODA ODA OEL OEL OEL 41304212 Toner Cartridge Type C2 K 10K OEL 41304213 Toner Cartridge Type C2 Y 10K APS 41304214 Toner Cartridge Type C2 M 10K APS 41304215 APS 41304216 Toner Cartridge Type C2 C 10K Toner Cartridge Type C2 K 10K APS 41382805 Toner Cartridge Type C2 Y 5K ODA 41382806 Toner Cartridge Type C2 M 5K ODA 41382807 Toner Cartridge Type C2 C BK ODA 41382808 Toner Cartridge Type C2 K 5K ODA 41382809 Toner Cartridge Type C2 Y 5K OEL 41382810 Toner Cartridge Type C2 M 5K OEL 41382811 Toner Cartridge Type C2 C BK OEL 41382812 Toner Cartridge Type C2 K 5K OEL 41382813 Toner Cartridge Type C2 Y 5K APS 41382814 Toner Cartridge Type C2 M 5K APS 41382815 Toner Cartridge Type C2 C BK APS 41382816 Toner Cartridge Type C2 K 5K APS 41316401TH Rev 9 Patrs No Table 7 1 3 3 Recommended Q ty Year Oki Data CONFIDENTIAL Remarks per 500 per 1000 per 2000 41377401 Plate Indicator 3 6 12 41716809 PCB Assy SWA 12 8164323M0000 EEPROM CU 12 41356111 Board TNO 6 6 6 41437418 Board Memory 64MB 1200dpi ODA 41437414 Board Memory 64MB 1200dpi OEL 41437410
104. s a test item SWITCH SCAN 2 Table 3 1 lists SCAN numbers Hold the and 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 3 1 Their respective liquid crystal displays are provided Displays vary by sensor See Table 3 1 for details 4 When the 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 41316401TH Rev 9 72 Oki Data CONFIDENTIAL Cover upper switch MT OHP transparency sensor Upper fuser center sensor Toner K sensor Toner M sensor Entrance belt sensor Toner Y sensor Toner C sensor Lower fuser center sensor Paper empty sensor Starker full sensor Entrance MT sensor P Exit sensor Color registration sensor L Color registration
105. stance Checks os e le etit CE E a heri teh 125 6 2 Program Font ROM Layouts uursssenssnnnensnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nenn 129 ONE EN MP ee 133 APPENDIX A CENTRONICS PARALLEL INTERFACE 149 APPENDIX B 2ND 3RD TRAY MAINTENANCE 153 Parts Replacement e re eine 153 1 1 Cover Idle Roller 5 153 1 2 Me 154 1 3 Feeder Drive Assy cereri en R E EE EREE 155 2 C7400 C7200 2nd 3rd Tray PARTS LIST sss 156 41316401TH Rev 9 6 Oki Data CONFIDENTIAL CONFIGURATIONS 1 System Configuration 1 1 Figure 1 1 shows the system configuration of the C7400 C7200 of printers z Josuas Bulpeo7 JOSUSS Hulpeo7 U9IIAS SWOUY 44 Josues Ajdwa seded Josues Ajdwe eeu 1edeg Josues Ajdwa Jedeg S1Q 7 10suas ezis jedeg lt SJOJSIWJOY pue seuoimMs siosueg L L aan 4 QI aro 199 PJE PUZ BuiddoH uonensibey M LN AN JOJO asINd lor Aq peo NYT 1015 uondo OG HUN JEMOd JEMOd aaH a ON abeyon mo 51015 uondo x Z WINIA NVH X 7
106. t toward the front Figure 2 3 43 Duplex Unit 41316401TH Rev 9 64 Oki Data CONFIDENTIAL 2 3 44 Guide Rails L and R 1 Remove the duplex unit see section 2 3 43 2 Remove the six screws 1 to detach the guide rails L and R Figure 2 3 44 Guide Rail L R 41316401TH Rev 9 65 Oki Data CONFIDENTIAL 2 3 45 Duplex Transport Assembly 1 Turn over the duplex transport Assy 1 2 Unscrew the three screws 1 and five screws to detach the plate 3 3 Unplug the connector and detach the mold Assy 2 4 Detach the two actuators 5 5 Unscrew the screws 6 and to remove the earth 8 6 Unhook the connector and disengage the two claws to detach PCB MOP 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 0 to remove the earth 17 10 Unscrew the screw 2 to remove the earth 3 11 Unscrew the screw 4 to remove the earth 5 12 Detach the bush 6 gear 17 and bush 48 then detach the roller 49 13 Unscrew the screw to remove the earth 14 Detach the gear 22 and bush amp At the same time the mini pitch belt 4 becomes detached 15 Detach the gear amp and bush amp then detach the roller 27 At the same time the mini pitch belt becomes detached 16 Unscrew the screw to remove the ear
107. ta CONFIDENTIAL Error Message Details INPATH FEED Feed jam INPATH TRANSPORT Transport jam INPATH EXIT Exit Jam INPATH DUPLEX INPUT Duplex unit input jam INPATH DUPLEX ENTRY Duplex unit entry jam INPATH REVERSAL Duplex unit reversal jam INFEED TRAYI Trayl hopping error JNFEED TRAYZ Tray2 hopping error JNFEED TRAYS Tray3 hopping error JNFEED FRONT FEEDER Front feeder hopping error JNFEED DUPLEX Duplex unit hopping error JNFEED TRAY4 PX703 Tray4 hopping error INFEED TRAYS PX703 Trays hopping error INPATH Information of paper that stays on the paper path INFEED Information of paper that stays at the paper entrance 41316401TH Rev 9 86 3 1 3 SWA board adjustments Destination Setting Oki Data CONFIDENTIAL The SWA board a main board is acommon ROM among destinations When using 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 and keys down turn the power on 2 Continue to press the 3 and keys to select a value to be set and press SELECT to fix the value Set Values and Destinations Set Value Destination ODA OEL Japan OEM Remark Model Name Setting LETTER A4 inch millimeter A4 millimeter A4 millimeter The CU program automaticall
108. tallation of a new fuser unit to date TR BELT UNIT kkkkkkkk IMAGES Shows the number of sheets fed after the installation of a new belt unit to date ack ID Unit BLACK ID UNIT kkkkkkkk IMAGES Converts the number of revolutions of each color s fellow ID Unit YELLOW ID UNIT kkkkkkkk IMAGES ID unit after the installation of that unit to date into agenta ID Unit MAGENTA ID UNIT kkkkkkkk IMAGES a count in letter A4 size paper sheets and yan ID Unit CYAN ID UNIT kkkkkkkk IMAGES shows it ack Toner Yellow Toner BLACK TONER YELLOW TONER ro ro Shows the remaining amount of each color s toner Magenta Toner MAGENTA TONER ro Cyan Toner CYAN TONER ro 3 1 2 8 Consumable counter display continuous 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 and keys down until the upper display PRINTER STATUS appears the key is for item increment and the key for item decrement 2 When the and keys are pressed the life cycle consumption status of the consumables shows up item by item the press of the 8 and keys is invalid 3 Pressing the 4 key ends the test flips ba
109. th 69 17 Remove the E ring and three screws 2 to detach the motor Assy 63 At the same time the earth 64 becomes detached 18 Detach the gear 5 and bush 19 Detach the gear 67 knock pin 68 and bush 6 amp 9 then detach the roller 49 20 Detach the bush gear 42 knock pin 43 and bush 44 then detach the roller At the same time the earths and become detached 21 Detach the idle roller shaft and the idle roller then detach the idle roller springs eight springs 18 19 22 Remove the cable of the duplex transport sensor Assy from the claw of the cover upper Disengage the claw then detach the sensor 41316401TH Rev 9 66 Oki Data CONFIDENTIAL Cord duplex NS connector Assy Idle roller spring Duplex transfer Assy Idle roller x 8 Idle roller shaft x 8 Figure 2 3 45 Duplex Transport Assembly 67 41316401TH Rev 9 2 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 Figure 2 3 46 CU Assy 1 2 Oki Data CONFIDENTIAL 41316401TH Rev 9 68 Oki Data CONFIDENTIAL 3 Demounting SWA Board 1 Remove the three screws 6 and screw 7 to detach the fan
110. tion 41316401TH Rev 9 102 Oki Data CONFIDENTIAL 2 Paper Loading Jam Multipurpose Tray Has the paper loading jam occurred immediately after power on Yes Is the paper jammed at the entrance cassette sensor or the entrance MT sensor Yes Remove the jammed paper Y Does the entrance MT sensor lever move properly No Replace the defective sensor lever Y 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 4 Yes Replace the engine board after checking the signal cable connection T 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 No Replace the multipurpose tray Assy Y 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 Replace the engine board after checking the cable connection 4 Replace the engine board after checking the cable connection 41316401TH Rev 9 103 Oki Data CONFIDENTIAL 3 Paper feed jam Has the paper feed jam occurred immediately after power on
111. tween pins 3 and 4 40 Main Motor K Between pins 1 and 2 4 Between pins 3 and 4 40 Registration Motor Between pins 1 and 2 7 90 Between pins 3 and 4 7 9 JlVLLN3GIJNOO MO 6 9H HLLOTO9LIELT Lek Fuser Motor Circuit Diagram Brown 20 gt Yellow 30 gt Blue o gt Illustration Resistance Between pins 1 and 2 7 90 Between pins 3 and 4 7 90 Feeder Motor Between pins 1 and 2 7 90 Between pins 3 and 4 7 90 Duplex Motor Between pins 1 and 2 6 70 Between pins 3 and 4 6 70 TYLLNSGI4NOO q MO 6 9H HLLOVOILELP 82 Main Cooling Fan Low Voltage Power Unit Circuit Diagram Red 19 132 V 3o FANALM N Illustration Resistance Electrical Chassis Cooling Fan Yellow FANALM N 2 Black OV Fuser Unit CD Upper roller Backup roller Thermostat Thermostat aco Heater a oe Heater bo bo Thermistor Thermistor co 2 Backup roller side 1 Upper Roller Side Between pins and Between pins and d Open Between pins e and f 363kQ at 25 C 2 Backup Roller Side Between pins a and Between pins and d OQ or open Between pins e a
112. ty Recommended Q ty Year Oki Data CONFIDENTIAL Remarks 40846001 Main Feeder Drive Motor 40848501 Main Feeder Drive Gear A 40848601 Main Feeder Drive Gear B 41303601 Left Plate Assy 40850201 Contact Assy 40737401 Power Unit AC DC switching 115V 40737402 Power Unit AC DC switching 115V ECO C7400 064 40737501 Power Unit AC DC switching 230V 40737502 115V 115V 230V 230V Power Unit AC DC switching 230V oO wo wo o gt o gt oa ECO C7400 064 40737601 Power Unit high voltage 2381018P0001 T HV Fape Harness 2381003P0016 HV Tape Harness ECO C7400 001 41128101 Power Supply Insulator 4PB4013 3100P006 Screw M3x6 PSW4 8C Screw M4x8 41346301 Transfer Contact Assy 41469001 Power Cooling Fan 4PB4083 2500P008 Screw T3x8 41316401TH Rev 9 144 Oki Data CONFIDENTIAL Figure 7 4 145 41316401TH Rev 9 Table 7 4 Paper Tray Guide Parts No Q ty Recommended Q ty Year Oki Data CONFIDENTIAL Remarks _ 40839801 Main Feed Assy 40371301 Feed Roller 40313201 Nudger Roller 40325401 Main Feeder Drive Gear 40839001 Left Cassette Guide Assy
113. ures Enter the self diagnostic mode Level 1 of the engine maintenance mode DIAGNOSTIC MODE XX XX XX Press Keys 0 and 4 to enter the self diagnostic mode Level 2 Press Key 1 three times to display REG ADJUST TEST REG ADJUST TEST Press Key 2 once to display REG ADJUST EXECUTE EG ADJUST E Press Key 3 to execute automatic color registration adjustment The motor starts rotating to adjust color registration T Color registration was not adjusted that is the motor did not rotate and OK was displayed immediately Yes Yes No Some error other than color misalignment has occurred After recovering from the error has the color registration become normal End NG CALIBRATION LEFT RIGHT is displayed Yes Is the color registration sensor cover stained Yes The sensor 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 41316401TH Rev 9 120 Oki Data CONFIDENTIAL Verify connection between the connector on Z71 PWB color registration sensor board and RSNS POWER connectors 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 Y No DYNAMI
114. y 3PB4076 5290P001 Main Cooling Fan 41346801 Color Registration Sensor Assy o o OJN 41253701 Registration Shutter Solenoid 41275201 Registration Shutter 41275301 Registration Shutter Spring 40859201 Duplex Guide Assy 40841101 Printer Unit Chassis 41312801 Left Top Cover Spring Assy 41312901 Right Top Cover Spring Assy 40841601 Entrance Sensor Actuator 1 40841701 Entrance Sensor Actuator 2 40841801 Entrance Sensor Actuator 3 41258301 Entrance Sensor PWB R71 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 0 0 0 0O 0O 0O 0O 0O 0O 0O 0O 0O 0O 0O O O 0 O 41253601 Duplex Gate Solenoid Assy 40842401 Fuser Drive Gear A N 40316301 Fuser Drive Gear B 41067201 Fuser Drive Gear C 40323901 Fuser Exit Roller 4PP4076 3949P001 Fuser Exit Roller Bushing L 4PP4043 4489P001 Fuser Exit Roller Bushing R 40842501 Fuser Exit Roller Contact 41073601 Exit Sensor Assy 40841301 Fuser Latching Handle L o gt 40841501 Fuser Latching Handle Springs N 40848801 Belt Motor Assy 40841401 Fuser Latching Handle R wo a 40847301 Main Motor Assy 41316401TH
115. y determines and switches between following printer specifications LED head width LED head resolution presence or absence of Japanese fonts Heisei fonts Morisawa fonts LED Head Width Resolution 600dpi With Kanji fonts Without Kanji fonts Two Heisei fonts ML3010c Five Morisawa fonts ODA OEL ASP OKI C7200 1200dp OKI C7400 600dpi ML3020c OKI C9200 1200dp EEPROM Initialization To initialize the EEPROM enter the maintenance mode and select the EEPROM RESET item after the general start up ML3050c OKI C9400 41316401TH Rev 9 87 Oki Data CONFIDENTIAL 3 1 3 1 Short plug settings The SWA board has two short plugs that can be set as follows Short Plug WE1 Sets flash ROM DIMM to connect 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 WE2 Not use 3 1 3 2 Printings singly using controller equipped printer 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 3 gt 3 With HDD 0 gt 0 5 8 gt 3 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 3

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