Oki Data CONFIDENTIAL
45850101TH Rev.1
2-35
2. TROUBLESHOOTING PROCEDURES
Panel display
Cause
Check details
Result
Solution
Power OFF/ON
918:Error
Detect the
Duplex Unit Fan-
0
Power OFF/ON
923:Error
The Black drum
is not running
normally.
Power OFF/ON
928:Error
The fuser motor
is not running
normally.
Power OFF/ON
931:Error
Duplex unit CPU
clock frequency
error
Power OFF/ON
933:Error
Tray 2 CPU clock
frequency error
Power OFF/ON
934:Error
Tray 3 CPU clock
frequency error
Power OFF/ON
935:Error
Tray 4 CPU clock
frequency error
Power OFF/ON
941:Error
A watch dog
timer error was
detected.
941:Error
Turn off and on the MFP.
When this error occurs
again, replace the CU/
PU board.
Power OFF/ON
942:Error
An undefined
interruption was
detected.
942:Error
Turn off and on the MFP.
When this error occurs
again, replace the CU/
PU board.
Power OFF/ON
943:Error
PU CPU ran
away out of
control due to
noise etc.
943:Error
Turn off and on the MFP.
When this error occurs
again, replace the CU/
PU board.
Power OFF/ON
944:Error
Dcon circuit
access failed.
944:Error
Turn off and on the MFP.
When this error occurs
again, replace the CU/
PU board.
Inspection is
required.
980:Error
Winds paper to
the fuser unit
was detected
or impossible to
recovery error.
Replace the Fuser unit.
Panel display
Cause
Check details
Result
Solution
Inspection is
required.
982:Error
Excessive trays
beyond the
specifi-cation are
installed.
Are many trays beyond
the specification
installed?
Yes
Use trays as many as
specified.
Inspection is
required.
983:Error
More than one
toner cartridge
tag of the same
color was
detected.
Is more than one toner
cartridge of the same
color installed?
Yes
Replace the correct toner
cartridge or image drum.
Inspection is
required.
984:Error
A format tag not
matching with
the K position
was detected.
Replace the correct toner
cartridge.
Inspection is
required.
985:Error
A format tag not
matching with
the Y position
was detected.
Replace the correct toner
cartridge.
Inspection is
required.
986:Error
A format tag not
matching with
the M position
was detected.
Replace the correct toner
cartridge.
Inspection is
required.
987:Error
A format tag not
matching with
the C position
was detected.
Replace the correct toner
cartridge.
Power OFF/ON
0xF0C:Error
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CU program
error
Record the eight figures on
the LCD, and cycle the power.
Power OFF/ON
0xF0D:Error
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Power OFF/ON
0xFFE:Error
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xxxxxxxx xxxxxxx
Record the eight figures on
the LCD, and cycle the power.
Power OFF/ON
0xFFF:Error
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Note!
With the MFP’s temperature not more than 0ºC, the errors 168, 169, 171, 173,
175, 902, 904, 916 Error may occur. After turn off the MFP, turn on the MFP
after the MFP warms.