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40055101TH Rev.4 4 /
4.1.3.11 Holder Assembly...................................................................................................172
4.1.3.12 Plate-Side M and Gear-Idle...................................................................................173
4.1.3.13 Registration Roller ................................................................................................174
4.1.3.14 Drive Shaft E (Eject) and Eject Roller ..................................................................175
4.1.3.15 Heat Assembly ......................................................................................................176
4.1.3.16 Pressure Roller B (Back Up Roller)......................................................................177
4.1.3.17 Hopping Shaft Assembly ......................................................................................178
4.1.3.18 Paper Sensor E, Paper Sensor Exit and Toner Sensor Assembly .........................179
4.1.3.19 Printer Unit............................................................................................................180
4-2.MECHANICAL DISASSEMBLY AND REASSEMBLY
FOR OKIFAX 5100 SERIES ................................................................................ 181
4.2 General ................................................................................................................................................181
4.2.1 Precautions for Parts Replacement .......................................................................................181
4.2.2 Tools......................................................................................................................................182
4.2.3 How to Disassemble and Reassemble...................................................................................182
4.2.3.1 LED Print Head.......................................................................................................185
4.2.3.2 ID Unit, Rear Cover, NCU Cover, Main Cover, Separation Plate, NCU Board,
Modem Board .........................................................................................................186
4.2.3.3 Control Panel Assembly, Paper Guide (U) Assembly. ...........................................188
4.2.3.4 Sub-roller, ADF Roller Assembly, Pinch Roller, Contact Image Sensor, Document
Detectors (PC1 and PC2). .......................................................................................190
4.2.3.5 Resist Motor, Drum Motor, Release Guide Assembly, Manual Guide Assembly,
Stacker Cover, Fusing Unit .....................................................................................192
4.2.3.6 Lower Base, Motor Assembly, Back-up Roller, Transfer Roller ...........................194
4.2.3.7 Resist Roller, Hopping Roller, Sensor Plates .........................................................196
4.2.3.8 MCNT Board, Power Supply Unit, Contact Assembly, Transformer, Sub-PSU ...198
5.ADJUSTMENTS ...................................................................................................... 199
5.1 Setting of LED Print Head Drive Time ...............................................................................................199
5.2.1 OKIOFFICE44/OKIFAX 4100 Confirmation Items ............................................................200
5.2.2 OKIOFFICE44/OKIFAX 4100 Measurement ......................................................................201
5.3.1 OKIFAX 5000 Series Confirmation Items ...........................................................................202
5.3.2 OKIFAX 5000 Series Measurement .....................................................................................203
6.CLEANING AND MAINTENANCE ...........................................................................205
6.1 Replacement of Consumable Parts ......................................................................................................205
6.2 Routine Inspection ...............................................................................................................................208
6.2.1 Routine inspection for OKIOFFICE44/OKIFAX 4100 ........................................................208
6.2.2 Routine inspection for OKIFAX 5000 series........................................................................210
6.3 Printer Counter Display/Clear .............................................................................................................212
6.4 Printer Counter Display/Clear .............................................................................................................213
6.5 Self-diagnosis Test ..............................................................................................................................214
6.6 Sensor Calibration Test .......................................................................................................................218
6.7 LED Test .............................................................................................................................................220
6.8 Tone Send Test ....................................................................................................................................221
6.9 High-speed Modem Send Test ............................................................................................................222
6.10 High-speed Modem Receive Test .......................................................................................................224
6.11 MF Send Test ......................................................................................................................................225
6.12 Tone (TEL/FAX) .................................................................................................................................226
6.13 Protocol Dump Data Printing ..............................................................................................................227
6.14 System Reset .......................................................................................................................................231
6.15 Service Code........................................................................................................................................232
7-1.TROUBLESHOOTING AND REPAIR FOR OKIOFFICE44/OKIFAX 4100.......... 235
7.1.1 Overall Troubleshooting Flow Chart...................................................................................................237
7.1.2 No LCD Operation ..............................................................................................................................238
7.1.3 ALARM LED On ................................................................................................................................239
7.1.4 Printing Test Failure ............................................................................................................................240
7.1.5 No Local Copy ....................................................................................................................................241
7.1.6 Auto Dial Failure .................................................................................................................................242
7.1.7 Transmission Problem .........................................................................................................................243
7.1.8 Auto Reception Failure........................................................................................................................245
7.1.9 Reception Problem ..............................................................................................................................246
7.1.10 Sensor Calibration Test .......................................................................................................................248
7.1.11 LED Test .............................................................................................................................................249
4


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