Oki OKIFAX4550 Maintenance Manual page 5

4.3.16 Hopping Shaft Assembly ......................................................................................... 175
4.3.17 Paper Sensor E, Paper Sensor Exit and Toner Sensor Assembly ......................... 176
4.3.18 Printer Unit .............................................................................................................. 177
5. ADJUSTMENTS .................................................................................................. 178
5.1 Setting of LED Print Head Drive Time ................................................................................. 178
5.2.1 Confirmation Items .................................................................................................. 179
5.2.2 Measurement .......................................................................................................... 180
6. CLEANING AND MAINTENANCE ...................................................................... 182
6.1 Replacement of Consumable ............................................................................................... 182
6.2 Routine Inspection ............................................................................................................... 184
6.3 Printer Counter Display/Clear .............................................................................................. 186
6.4 Printer Counter Display/Clear .............................................................................................. 188
6.5 Local Test ............................................................................................................................ 189
6.5.1 When G4 option board is not installed. ................................................................... 189
6.5.2 When G4 option baord is installed. ......................................................................... 190
6.6 Self-diagnosis Test .............................................................................................................. 191
6.6.1 Self Diagnosis Report ............................................................................................. 192
6.7 Sensor Calibration Test ....................................................................................................... 194
6.8 LEDs Test ............................................................................................................................ 196
6.9 Tone Send Test ................................................................................................................... 197
6.10 High-speed Modem Send Test ............................................................................................ 198
6.11 High-speed Modem Receive Test ........................................................................................ 200
6.12 MF Send Test ...................................................................................................................... 201
6.13 Tone (TEL/FAX) ................................................................................................................... 202
6.14 Protocol Dump Data Printing ............................................................................................... 203
6.14.1 G3 Protocol Dump .................................................................................................. 204
6.14.2 Analysis from the data ............................................................................................ 207
6.14.3 FCF (Facsimile Control Field) conversion table ...................................................... 208
6.14.4 G4 Protocol Dump .................................................................................................. 209
6.15 System Reset ....................................................................................................................... 212
6.16 Service Codes ...................................................................................................................... 213
6.16.1 G3 Service Code List .............................................................................................. 214
6.16.2 G4 Service Code Lists ............................................................................................ 217
7. TROUBLESHOOTING AND REPAIR FOR OKIFAX4550/OKIOFFICE87 .......... 220
7.1 Overall Troubleshooting Flow Chart .................................................................................... 222
7.2 No LCD Operation ............................................................................................................... 223
7.3 Alarm LED On ...................................................................................................................... 224
7.4 Printing Test Failure ............................................................................................................. 225
7.5 No Local Copy ..................................................................................................................... 226
7.6 Auto Dial Failure .................................................................................................................. 227
7.7 Transmission Problem ......................................................................................................... 228
7.8 Auto Reception Failure ........................................................................................................ 229
7.9 Reception Problem .............................................................................................................. 230
7.10 Sensor Calibration Test ....................................................................................................... 231
7.11 LED Test .............................................................................................................................. 232
7.12 Tone Send Test ................................................................................................................... 233
7.13 High-speed Modem Test ...................................................................................................... 234
7.14 MF Send Test ...................................................................................................................... 236
7.15 Tone (TEL/FAX) Send Test ................................................................................................. 237
7.16 No Acoustic Line Monitor ..................................................................................................... 238
7.17 Power Supply Unit ............................................................................................................... 239
7.18 No Document Feeding ......................................................................................................... 239
7.19 Multiple Document Feeding ................................................................................................. 240
7.20 Document Skew ................................................................................................................... 241
7.21 Document Jam ..................................................................................................................... 243
7.22 Printer Unit ........................................................................................................................... 244
7.22.1 Precautions ............................................................................................................. 244
7.22.2 Troubleshooting Flow Charts of Printer Unit ........................................................... 245
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