Oki MC770 series Maintenance Manual - page 152
45376001TH Rev.1
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Oki Data CONFIDENTIAL
7. Troubleshooting and repair procedure
Error Code Details
C0A5
Fan Motor Error5(Engine Fan Motor Error)
C0A6
Fan Motor Error6(Duplex Fan Motor Error)
C446
Upper heater temperature low
C41B
Upper thermistor circuit open error
C449
Upper heater temperature high
C466
Lower heater low temperature
C468
Lower heater temperature high
C41D
Lower thermistor circuit open error
C46A
Compensation heater temperature high
C46B
Compensation heater temperature low
C41E
Compensation thermistor shortened error
C56A
Duplex Unit I/F Error
C56B
Tray2 Unit I/F Error
C56C
Tray3 Unit I/F Error
C5A1
Engine EEPROM error
C5A5
Engine software error
C5A2
Duplex software error
C5A3
Tray2 software error
C5A4
Tray3 software error
C5A6
Tray4 software error
C901
Scanner system initializing error
C940
Engine control error
C96A
Power supply LSI error
F031
Duplex version Error
F032
Tray2 version Error
F033
Tray3 version Error
F072
Flash ROM abnormality
CE50
Temperature sensor abnormality
CE51
Humidity sensor abnormality
CE52
Sensor dewed error (Humidity Sensor Wet Error)
CE85
Black LED head missing
CE84
Cyan LED head missing
CE83
Magenta LED head missing
CE82
Yellow LED head missing
CF10
Finisher error
C383
Black toner sensor error
C393
Cyan toner sensor error
C3A3
Magenta toner sensor error
C3B3
Yellow toner sensor error
C4C0
Fuser unit fuse cut error
C3E2
Belt unit fuse cut error
C3ED
Black image drum fuse cut error
C3EC
Cyan image drum fuse cut error
C3EB
Magenta image drum fuse cut error
C3EA
Yellow image drum fuse cut error
Error Code Details
C91D
Engine Error1
C91C
Engine Error2
C91B
Engine Error4
C91A
Engine Error5
CE7A
Drum up/down error
C37A
Belt thermister shortened error
C37B
Belt thermister open error
C37C
Belt thermister temperature high
C37D
Belt thermister temperature low
C020
Drum motor lock error
C4E3
Fuser motor lock error
C4FA
Paper rolled around fuser
F041
Excessive optional tray detected
F042
Toners duplicated by color
C921
AC voltage zero-crossing error
F090
SRAM abnormality on the SYS board
F111
Scanner response abnormality
F113
Scanner software errror
F114
Scanner CPU exception
D30F
Waste toner full (Belt)
D30D
Waste toner full (Cyan)
D30E
Waste toner full (Magenta)
D311
Non genuin toner (Black)
D312
Non genuin toner (Cyan)
D313
Non genuin toner (Magenta)
D314
Non genuin toner (Yellow)
D381
Toner region mismatch error (Black)
D382
Toner region mismatch error (Cyan)
D383
Toner region mismatch error (Magenta)
D384
Toner region mismatch error (Yellow)
D371
Toner sensor error (Black)
D372
Toner sensor error (Cyan)
D373
Toner sensor error (Magenta)
D374
Toner sensor error (Yellow)
D331
Incompatible toner (Black) → Black Toner Protected Region
D332
Incompatible toner (Cyan) → Cyan Toner Protected Region
D333
Incompatible toner (Magenta) → Magenta Toner Protected Region
D334
Incompatible toner (Yellow) → Yellow Toner Protected Region
D335
Incompatible toner (Black) → Black Toner Group Mismatch Error
D336
Incompatible toner (Cyan) → Cyan Toner Group Mismatch Error
D337
Incompatible toner (Magenta) → Magenta Toner Group Mismatch Error
D338
Incompatible toner (Yellow) → Yellow Toner Group Mismatch Error
D301
Black toner is empty
D302
Cyan toner is empty
D303
Magenta toner is empty