Oki C810 Maintenance Manual page 5

Oki Data CONFIDENTIAL
5. MAINTENANCE MENUS ............................................... 112
5.1 System maintenance menu (For maintenance personnel) .............................113
5.2 Maintenance utility ...........................................................................................114
5.3 Functions of user's maintenance menu ...........................................................117
5.3.1 Maintenance menu (For end users) ..........................................................117
5.3.2 Self-diagnostic mode .................................................................................119
5.3.2.1 Operator panel ...................................................................................119
5.3.2.2 Normal self-diagnostic mode (Level 1) ............................................. 121
5.3.2.2.1 Activation method for self-diagnostic mode (Level 1) ...................... 121
5.3.2.2.2 Deactivation of self-diagnostic mode ............................................... 121
5.3.2.3 Switch scan test ................................................................................ 122
5.3.2.4 Motor clutch test ............................................................................... 124
5.3.2.5 Test print ........................................................................................... 126
5.3.2.6 Color registration adjustment test .................................................... 130
5.3.2.7 Print density adjustment test ............................................................ 131
5.3.2.8 Indication of consumable part counters ........................................... 132
5.3.2.9 Indication of printed page counters .................................................. 133
5.3.2.10 Factory/Shipping switching .............................................................. 133
5.3.2.11 Setup of self-diagnostic function ...................................................... 134
5.3.2.12 Indication of LED head serial number .............................................. 134
5.3.3 Various types of print on the individual printer equipped
with controller ........................................................................................... 135
5.3.4 Functions of keys when depressed at power-on ...................................... 135
5.4 Setup after replacement of parts .................................................................... 136
5.4.1 Precautions on the replacement of engine control PCB .......................... 136
5.4.2 Setup of EEPROM after replacement of CU PCB .................................... 137
5.4.3 Setup of destination .................................................................................. 138
5.5 About the manual setup of Print density adjustment ...................................... 139
5.6 Administrator Menu List of the Printer ............................................................ 140
How to Change ................................................................................................ 140
6. CLEANING .................................................................... 142
6.1 Cleaning .......................................................................................................... 143
6.2 Cleaning the LED lens array ........................................................................... 144
6.3 Cleaning of pickup rollers ............................................................................... 146
44072903TH Rev.1
7. TROUBLESHOOTING PROCEDURES ......................... 147
7.1 Precautions prior to repair .............................................................................. 148
7.2 Items to be checked prior to taking action on abnormal images .................... 148
7.3 Precautions when taking action on abnormal images .................................... 148
7.4 Preparations for troubleshooting .................................................................... 148
7.5 Troubleshooting method ................................................................................. 149
7.5.1 LCD Message list...................................................................................... 149
7.5.2 Preparing for troubleshooting ................................................................... 168
7.5.2.(1) LCD Display Malfunction .............................................................. 169
7.5.2.(2) Irregular Operation of the device after turning on the power ........ 171
7.5.2.(3) Paper Feed Jam(Error 391:1st Tray) ............................................. 178
7.5.2.(4) Paper Feed Jam (Error 380) ......................................................... 180
7.5.2.(5) Paper Feed Jam (Error 390:Multi-purpose Tray).......................... 181
7.5.2.(6) Paper Path Jam(Error 381) ........................................................... 183
7.5.2.(7) Paper Exit Jam(Error 382) ............................................................ 185
7.5.2.(8) Duplex Print Jam(Error 370, 371, 372, 373, 383) ......................... 187
7.5.2.(9) Paper Size Error (Error 400, 401) ................................................. 189
7.5.2.(10) ID Unit Up-Down Error(Service Call 140-143) .............................. 190
7.5.2.(11) Fuser Unit Error(Error 170-177) .................................................... 191
7.5.2.(12) Motor Fan Error(Error 120, 127, 051) ............................................ 192
7.5.2.(13) Print Speed is Slow (Low Performance) ....................................... 192
7.5.2.(14) Option unit is not recognized ........................................................ 193
7.5.2.(15) LED head is not recognized(Error 131, 132, 133, 134) ................. 194
7.5.2.(16) Toner cartridge is not recognized(Error 540, 541, 542, 543) ....... 194
7.5.2.(17) Fuse Cutout Error (Error 150-155) ................................................ 196
7.5.2.(18) Dew Condensation Errors (Error 123) .......................................... 196
7.5.2.(19) Connection Diagram ..................................................................... 197
7.5.3 Image Problem Troubleshooting .............................................................. 198
7.5.3.(1) Color is totally pale (Fig.7.2 A) ...................................................... 199
7.5.3.(2) Background is dirty (Fig.7.2 B) ...................................................... 200
7.5.3.(3) Blank Print (Fig.7.2 C) ................................................................... 201
7.5.3.(4) Vertical lines are printed ............................................................... 201
7.5.3.(5) Cyclic Print Trouble (Refer to Fig.7.2 E) ........................................ 202
7.5.3.(6) Color registration is wide. ............................................................. 202
7.5.3.(7) Solid Black Print ............................................................................ 203
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