Oki C810 Maintenance Manual page 164

Oki Data CONFIDENTIAL
Message Cause
POWER OFF/ON Video Error.
073: FATAL ERROR A trouble was
xxxxxxxx detected
during
image data
development.
(Illegal data
received)
POWER OFF/ON Video Error
074: FATAL ERROR Fault detected
xxxxxxxx when image
075: FATAL ERROR data is
xxxxxxxx extended.
SERVICE CALL Parameter
081: FATAL ERROR consistency
Check error
SERVICE CALL Engine
104: FATAL ERROR EEPROM
setting check
is OK when
power ON.
Then detect
read/ write
error.
SERVICE CALL Abnormal
106: FATAL ERROR engine control
logic.
SERVICE CALL Detected
111: FATAL ERROR different
Duplex Unit.
44072903TH Rev.1
Error Description
s the CU Assy installed properly?
No Redo the

Yes installation
properly.
 Change the PC for
Yes another of higher
Is the error issued again?
grade, or execute
print again after
reducing the
resolution.
Replace the CU
PCB.
Replace the
interface cable.
Reinstall the PC
printer driver.
Is CU assembly set properly? No Set properly.
Yes
Replace CU PCB.
EEPROM or FLASH has Replace the
become incapable of reading CU board if the
or writing. problem remains
after cycling the
power.

Power OFF/ON
Does error reoccur? Yes
Replace PU PCB.
 Power OFF/ON
Does error reoccur? Yes Replace PU PCB.
Is different Duplex Unit No Install Duplex Unit
installed?
of this printer.
Handling Message
SERVICE CALL
112: FATAL ERROR
SERVICE CALL
113: FATAL ERROR
SERVICE CALL
121: FATAL ERROR
SERVICE CALL
122: FATAL ERROR
SERVICE CALL
123: FATAL ERROR
SERVICE CALL
124: FATAL ERROR
SERVICE CALL
126: FATAL ERROR
7. TROUBLESHOOTING PROCEFRURES
Cause Error Description
Detected Is different 2nd Tray installed?
different 2nd
Tray.
Detected Is different 3rd Tray installed?
different 3rd
Tray.
High-voltage Is cable between PU board
and
power supply
high-voltage power unit
I/F error.
connected properly?
Is there no improperly
connections?
Low-voltage Low-voltage power supply
power supply temperature error.
fan error.
Is fan in low-voltage power
supply unit operating?

Abnormal
environment Does error reoccur?
humidity /Not
Connected
humidity
sensor.
Abnormal 
Environment Does error reoccur?
temperature.
Condensation Condensation is likely to occur
in the printer in printers carried from the
was detected. outside.
Turn on the printer again
after it is exposed to room
temperature for two hours
to half a day. Does the error
reoccur?
Handling
No Install 2nd Tray of
this printer.
No Install 3rd Tray of
this printer.
No Connect properly.
Yes Check improper
connections for
high voltage.
No Replace high-
voltage power
supply.
No Check
connections for
Yes connector of fan.
Replace low-
No voltage power
Yes supply.
Replace fan motor.
Replace low-
voltage power
supply.
Power OFF/ON
Yes Replace the
operator panel
PCB.
Power OFF/ON
Yes Replace the
operator panel
PCB.
Turn on the printer
again after it is left
alone.
Yes Replace the
operator panel
PCB.
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