Name: Oki C910
Brand: Oki
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Oki Data CONFIDENTIAL

44043511TH Rev.2

125 /

4.3.15 HV-Assy

(1) Open the Cover Assy-Top, then remove the Belt-Assy.

(2) Remove the Cover-Middle. (Refer to Section 4.3.14)

(2) Unscrew screw

, then remove Cover-HV-Assy .

(3) Remove the 2 connectors and unscrew the 2 screws

, then remove HV-Assy .

(4) Remove the 2 hinges, then remove Bracket-HV-Assy

Maintenance Manual1
Table of Contents7
Configuration10
System Configuration10
Printer Composition11
Optional Composition12
Specifications14
Interface Specifications16
- USB Interface Specifications16
- Network Interface Specifications17
- Parallel Interface Specifications18
- Descriptions of Operations21
Main Control PCB22
Engine Control PCB26
Power Unit28
Mechanical Process29
- Electrophotographic Processing Mechanism30
- Paper Processing Mechanism34
Sensor43
- Paper-Related Sensor43
- Other Sensors44
Color Drift Correction45
Image Transfer Control According to Environmental Change (Room Temperature and Relative Humidity)45
Paper Jam Detector46
Cover Open47
Toner Low Detection48
Paper Size Detection51
Power on Process52
- Self-Diagnostic Test52
Color Drift Detection53
Reading Version of Routine Replacement Units54
Life Counter of Replaceable Units54
Toner Usage Level Detection55
Printer Installation56
Precautions and Prohibition56
Printer Unpacking Procedure58
Printer Installation Instructions59
Packed Units and Attachments60
Assembly Procedure61
- Printer Main Body61
- Power Cable Connection68
- Installation of Optional Components72
- Checking of Optional-Component Recognition85
Menumap Printing87
How to Connect88
Checking of User Paper91
Parts Replacement92
Precautions When Replacing Parts92
Parts Layout94
Parts Replacement Method110
- Cover-Rear, Cover-Side (R), and Cover-Side (R) Rear111
- Cover-Side (L) and Cover Assy-Front112
- Stacker Assy-FU113
- Cover Assy-OP Panel, Cover-Guard (R), Cover-Guard (Front) and Cover-Guard (L)114
- Op Pcb115
- Cover Assy-Top116
- FAN-PCB-Assy, CU-Board-Assy and S2X/S2V-PU-Board117
- Job-Offset-Assy 723 and Basket-Assy118
- Plate Top Assy120
- Eject-Assy121
- Motor-Pulse-Belt and Sensor-Resist-Assy122
- FDR Unit-MPT123
- FDR Unit-Resist124
- Duct Assy125
- HV-Assy126
- Power Unit127
- Low Voltage Power Source Assy and Motor-FAN128
- Belt-Assy129
- Fuser Unit-LBT130
- Unit-Duplex131
- Paper Feed Roller132
- MPT Feed Roller133
- Adjustment134
System Maintenance Menu134
- ID Check Pattern Print ("TEST PRINT MENU" Item)136
- Maintenance Utility136
Maintenance Menu and Its Function139
- Maintenance Menu139
- Engine Maintenance Mode139
- Operation Panel139
- Various Printing Methods with a Stand-Alone Printer Coming with a Controller167
Adjustment after Replacing Parts168
- Precautions When Replacing the Engine Control PCB168
- Precautions Upon EEPROM Replacement168
- CU PCB of 1200 Dpi Printer and Replacement of Mounted Components170
- Precautions in Key Chip Replacement (1200Dpi Printer)171
- Precautions in EEPROM Replacement (1200 Dpi Printer)172
- Precautions in HDD Replacement (1200 Dpi Printer)173
- Product Code of Maintenance HDD (1200 Dpi Printer)174
- Setup of EEPROM after Replacement of TBX PCB175
- Setup of Destination176
- Versions of Firmware for Maintenance Purpose (600 Dpi Printers)177
Density Correction178
Paper Thickness Detection/Sensitivity Correction179
Routine Replacement181
Routine Replacement of Consumable Parts181
Cleaning181
LED Lens Array Cleaning181
Pickup Roller Cleaning182
Cleaning Feed Roller183
Malfunction Repair Procedure189
Precautions before Repairs189
Items to Check before Remedying Abnormal Image189
Precautions before Remedying Abnormal Image189
Troubleshooting Preparations189
Troubleshooting189
- LCD Message List190
- Preparing for Troubleshooting199
- Troubleshooting with Abnormal Image213
Check Fuse228
Connection Diagram229
Check Resistance Value229
Diagram of Part Layout of Various PCB236
Message List243
Message Chart of C910/C930243
Illustration Appears on the Operating Panel252
F/W Revision (C910)255
- F/W Rev. Table255
- Check Abd Version Display255
Appendix-A C910/C930 Lcd/Led Display256

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Brand	Oki
Model	C910
Category	Printer
Language	English