Preparing For Troubleshootin - Oki MC561 Maintenance Manual

Oki Data CONFIDENTIAL

7.5.4 Preparing for troubleshootin

(1) LCD Display Trouble .................................................................................... 214
(1-1) LCD displays nothing ......................................................................... 214
(1-2) Display of OKI logo ............................................................................ 215
(1-3) Error message display ....................................................................... 215
(2) Abnormal MFP operation after powered on .................................................. 215
(2-1) No operation ....................................................................................... 215
(2-2) Abnormal sound ................................................................................. 216
(2-3) Abnormal odor .................................................................................... 217
(2-4) Slow starting time ............................................................................... 217
(3) Paper feed jam (error code 391: 1st tray) ..................................................... 227
(3-1) Jam occurs immediately after the power is turned on. (1st tray) ........ 227
(3-2) Jam occurs immediately after the paper feed is started. (1st tray) ..... 227
(4) Feed jam (error code 380) ............................................................................ 229
(4-1) Jam occurs immediately after the power is turned on. ....................... 229
(4-2) Jam occurs immediately after the paper feed is started. .................... 229
(5) Paper feed jam (error code 390: Multipurpose tray) ..................................... 230
(5-1) Jam occurs immediately after the power is turned on.
(Multipurpose tray) .............................................................................. 230
(5-2) Jam occurs immediately after paper feed is started.
(Multipurpose tray) .............................................................................. 231
(6) Paper running jam (error code 381:) ............................................................ 232
(6-1) Jam occurs immediately after the power is turned on. ....................... 232
(6-2) Jam occurs immediately after a paper is taken into printer. ................ 232
(6-3) Jam occurs in the middle of paper running path. ................................ 233
(6-4) Jam occurs immediately after paper has reached the fuser. .............. 234
(7) Paper unloading jam (error code 382) .......................................................... 234
(7-1) Paper unloading jam occurs immediately after the power is turned on. 234
(7-2) Paper unloading jam occurs after a paper is taken into printer. .......... 235
(7-3) Paper unloading jam occurs in the middle of paper running path. ..... 236
(8) Two-sided printing jam (error code: 370, 371, 372, 373, 383) ...................... 236
(8-1) Two-sided printing jam occurs immediately after the power is
turned on. ........................................................................................... 236
(8-2) Two-sided printing jam occurs during taking in the paper into
Duplex unit. ......................................................................................... 236
44473001TH Rev.1
(8-3) Two-sided printing jam occurs in the process of reversing paper. ...... 237
(8-4) Two-sided printing jam occurs during transporting paper inside
the Duplex unit. ................................................................................... 237
(8-5) Paper is not supplied from the Duplex unit to the regist roller. ............ 237
(9) Paper size error (error code 400) ................................................................. 238
(9-1) Jam occurs when paper end is located near the IN1 sensor. ............. 238
(10) ID unit Up/Down error (Service call 142) ...................................................... 238
(10-1) Error occurs during the Up movement of the ID unit .......................... 238
(10-2) Error occurs during the Down movement of the ID unit ...................... 239
(11) Fuser unit error (error 170 to 177) ................................................................ 239
(11-1) Error occurs immediately after the power is turned on. ...................... 239
(11-2) Error occurs approx. 1 minute after the power is turned on. ............... 240
(12) Motor fan error (error code 122, 128) .......................................................... 241
(12-1) The low voltage power supply fan does not rotate immediately after
the power is turned on. ....................................................................... 241
(12-2) All fans of the printer do not rotate. ..................................................... 241
(13) Print speed is slow. (Performance is low.) .................................................... 241
(13-1) Print speed decreases. ....................................................................... 241
(14) Option unit cannot be recognized. ................................................................ 241
(14-1) Option try unit cannot be recognized. ................................................. 241
(15) LED head cannot be recognized. (error code 131, 132, 133, 134) ............... 242
(15-1) Service call 131 to 134 (LED HEAD Missing) .................................... 242
(16) Toner cartridge cannot be recognized. (error code 540, 541, 542, 543) ...... 242
(16-1) Error caused by the consumable items. .............................................. 242
(16-2) Error caused by the toner sensor ....................................................... 242
(16-3) Error caused by the defective mechanism .......................................... 243
(17) Fuse cut error (error codes 153 to 155) ........................................................ 243
(17-1) Fuse cut error ..................................................................................... 243
(18) Humidity sensor error (error code 123) ........................................................ 244
(18-1) Humidity sensor error ......................................................................... 244
(19) Connection diagram ..................................................................................... 245
Note! When replacing the main board (M32 PCB), please read the content on the
EEPROM chip of the old board and copy it to the new board. (Refer to 5.4.1
when exchange main board)
7. TROUBLESHOOTING PROCEDURES
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