Preparing For Troubleshooting - Oki C810 Maintenance Manual

Oki Data CONFIDENTIAL

7.5.2 Preparing for troubleshooting

(1) LCD Display Malfunction ................................................................................... 169
(1-1) Nothing is displayed in LCD. ....................................................................... 169
(1-2) The first line is black display in LCD ........................................................... 170
(1-3) PLEASE WAIT ............................................................................................. 170
(1-4) An error message related to the operation panel is displayed.................... 170
(1-5) "RAM CHECK" or "INITIALIZING" are displayed ....................................... 170
(2) Irregular Operation of the device after turning on the power ............................ 171
(2-1) No operation ................................................................................................ 171
(2-2) Abnormal sound .......................................................................................... 171
(2-3) Abnormal odor ............................................................................................. 172
(2-4) Slow starting time ........................................................................................ 172
(3) Paper Feed Jam(Error 391:1st Tray) ................................................................. 178
(3-1) Paper feed jam occurs right after turning on the power (1st Tray) .............. 178
(3-2) Paper feed jam occurs right after paper feeding starts (1st Tray) ............... 178
(4) Paper Feed Jam (Error 380) .............................................................................. 180
(4-1) Paper jam occurs right after turning the power ........................................... 180
(4-2) Paper jam occurs right after feeding paper ................................................. 180
(5) Paper Feed Jam (Error 390:Multi-purpose Tray) .............................................. 181
(5-1) Paper feed jam occurs right after turning on the power
(Multi-purpose Tray) .................................................................................... 181
(5-2) Paper feed jam occurs right after paper feeding starts
(Multi-purpose Tray) .................................................................................... 182
(6) Paper Path Jam(Error 381) ................................................................................ 183
(6-1) Paper path jam occurs right after turning on the power .............................. 183
(6-2) Paper path jam occurs right after feeding paper ......................................... 183
(6-3) Paper path jam occurs in a path route ........................................................ 184
(6-4) Paper path jam occurs right after reaching the fuser unit ........................... 185
(7) Paper Exit Jam(Error 382) ................................................................................. 185
(7-1) Paper exit jam occurs right after turning on the power ............................... 185
(7-2) Paper exit jam occurs right after feeding paper .......................................... 186
(7-3) Paper exit jam occurs in a path route .......................................................... 186
(8) Duplex Print Jam(Error 370, 371, 372, 373, 383) .............................................. 187
(8-1) Duplex print jam occurs right after turning on the power ............................ 187
(8-2) Duplex print jam occurs in the Duplex entry ............................................... 187
(8-3) Duplex print jam occurs in reverse of the paper ......................................... 188
44072903TH Rev.1
(8-4) Duplex print jam occurs in the Duplex input................................................ 188
(8-5) Paper is not fed to a Regist roller from Duplex section ...................................X
(9) Paper Size Error (Error 400) .............................................................................. 189
(9-1) Paper jam occurs when the end of paper is near IN1 sensor ..................... 189
(10) ID Unit Up-Down Error(Service Call 140-143) ................................................... 190
(10-1)An error occurs in the operation of ID Unit Up ............................................. 190
(10-2)An error occurs in the operation of ID Unit Down ........................................ 190
(11) Fuser Unit Error(Error 170-177) ......................................................................... 191
(11-1) An error occurs right after turning on the power ......................................... 191
(11-2) An error occurs in 1 min. from turning on the power ................................... 191
(12) Motor Fan Error(Error 122, 127, 051) ................................................................. 192
(12-1) Low voltage power unit fan does not rotate right after turning
on the power ................................................................................................ 192
(12-2) DUPLEX fan does not rotate in DUPLEX printing ....................................... 192
(12-3) Every fan in the machine does not rotate .................................................... 192
(13) Print Speed is Slow (Low Performance) ............................................................ 192
(13-1) Print speed decreases................................................................................. 192
(14) Option unit is not recognized ............................................................................. 193
(14-1) Duplex unit is not recognized ...................................................................... 193
(14-2) 2nd Tray unit is not recognized ................................................................... 193
(14-3) 3rd Tray unit is not recognized .................................................................... 193
(15) LED head is not recognized(Error 131, 132, 133, 134)...................................... 194
(15-1) Service Call 131-134(LED HEAD Missing) ................................................. 194
(16)Toner cartridge is not recognized(Error 540, 541, 542, 543) .............................. 194
(16-1) Errors caused by consumables ................................................................... 194
(16-2) Errors caused by toner sensor .................................................................... 194
(16-3) Errors caused by machine defects .............................................................. 195
(17) Fuse Cutout Error (Error 150-155) ..................................................................... 196
(17-1) Fuse cutout errors ....................................................................................... 196
(18) Dew Condensation Errors (Error 123) ............................................................... 196
(18-1) Dew Condensation ...................................................................................... 196
(19) Connection Diagram .......................................................................................... 197
Note! When the PU PCB is replaced, first read the data of the EEPROM chip of
the old PCB, and then, copy it to the new PCB after the replacement. (See
5.4.1 Precautions on the replacement of engine control PCB).
7. TROUBLESHOOTING PROCEFRURES
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