Oki C5100 Maintenance Manual page 4

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3.2.2
3.2.3
3.3 Print Density Adjustment ................................................................................................ 62
3.4 Print Density Adjustment (Calibration Chip) ................................................................... 63
4. REGULAR MAINTENANCE ........................................................................... 64
4.1 Parts Replaced Regularly .............................................................................................. 64
4.2 Cleaning ......................................................................................................................... 64
4.3 Cleaning the LED Lens Array ........................................................................................ 64
4.4 Cleaning the Pick-up Roller ........................................................................................... 64
5. TROUBLESHOOTING PROCEDURES ......................................................... 65
5.1 Precautions before troubleshooting ............................................................................... 65
5.2 Precautions before handling an abnormal image .......................................................... 65
5.3 Precautions upon handling an abnormal image ............................................................. 65
5.4 Preparing for Troubleshooting ....................................................................................... 66
5.5 Troubleshooting Procedure ............................................................................................ 66
5.5.1
5.5.2
5.5.3
5.6 Fuse Checking ............................................................................................................... 97
6. CONNECTION DIAGRAM .............................................................................. 98
6.1 Resistance Checks ........................................................................................................ 98
6.2 Program/Font ROM Layouts ........................................................................................ 102
7. PARTS LIST ................................................................................................. 108
APPENDIX A INTERFACE SPECIFICATIONS ................................................. 134
1. Parallel Interface Specifications (C5300) ......................................................................... 134
1.1 Parallel Interface ...................................................................................................... 134
1.2 Parallel Interface Connector and Cable ................................................................... 134
1.3 Parallel Interface Level ............................................................................................ 134
1.4 Timing Charts .......................................................................................................... 135
1.5 Parallel I/F Signals ................................................................................................... 136
2. Universal Serial Bus (USB) Interface Specifications ....................................................... 137
2.1 USB Interface .......................................................................................................... 137
2.2 USB Interface Connector and Cable ....................................................................... 137
2.3 USB Interface Signals ............................................................................................. 137
3 Network Interface Specifications ..................................................................................... 138
3.1 Network Interface ..................................................................................................... 138
3.2 Network Interface Connector and Cable ................................................................. 138
3.3 Network Interface Signals ........................................................................................ 138
APPENDIX B 2ND TRAY MAINTENANCE ....................................................... 139
1. Parts Replacement .......................................................................................................... 139
1.1 PCB ......................................................................................................................... 139
1.2 Frame Assy- Hopping .............................................................................................. 140
2. PARTS LIST .................................................................................................................... 141
APPENDIX C DUPLEX UNIT MAINTENANCE ................................................. 143
1. Parts Replacement .......................................................................................................... 143
1.1 Duplex Unit .............................................................................................................. 143
1.2 Upper Assy / Rear Assy .......................................................................................... 144
1.3 Duplex Transport Assy ............................................................................................ 145
2. PARTS LIST .................................................................................................................... 147
42049001TH Rev.1
EEPROM Replacement after ARC Board / OWL Board Replacement ............ 61
Destination Setting (Check Method: Printing demo page) ............................... 61
LCD message list ............................................................................................. 67
Preparing for troubleshooting ........................................................................... 72
Image Problem Troubleshooting ...................................................................... 83
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