44015503TH Rev. 1
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Oki Data CONFIDENTIAL
7. TROUBLESHOOTING PROCEDURE
Display Cause Error details Remedial measure
Restart the printer.
074: Error xxxxxxxx
075: Error xxxxxxxx
V
ideo Error
Error is
Detected when
expanding the
video data.
Is the CU assembly installed
correctly?
No
Yes
Re-install the CU
assembly normally.
Replace the CU board.
Contact the service
center.
081: Error
Parameter
integrity check
Either EEPROM or Flash ROM
cannot read/write normally.
Turn the printer power off
and then back on.
If the error symptom
remains unchanged,
replace the CU board.
Contact the service
center.
104: Error
Read/write
error of
the engine
EEPROM is
detected.
Does this error recur?
Yes
Turn off the power of the
printer and back on.
Replace the PU Board.
Contact the service
center.
106: Error
Engine control
logic has an
error.
Does this error recur?
Yes
Turn off the power of the
printer and back on.
Replace the PU board.
Contact the service
center.
111: Error
Duplex unit for
other model is
detected.
Is the duplex unit for that
specific model installed?
No
Install the correct duplex
unit.
Contact the Service
center.
112: Error
113: Error
Optional tray
for other model
is detected.
Is the optional tray for that
specific Model installed?
No Install the correct optional
tray.
Contact the Service
center.
121: Error
High voltage
power supply
interface error.
Is the cable connecting the PU
board to the high voltage unit
connected normally?
Have you checked defective
contact of contactor points?
Note)
No
Yes
No
Re-connect them
normally.
Check for defective
contact of the high voltage
system.
Replace the high voltage
power supply.
Contact the Service
center.
122: Error
Low voltage
power supply
fan error.
Is the fan (bottom right of the
front) of the low voltage power
supply block working?
Is the fan connector connected
correctly?
No
Yes
No
Yes
Check for sure connection
of the fan connector.
Replace the PU board.
Replace the fan motor.
Replace the PU board.
Display Cause Error details Remedial measure
Contact the Service
center.
123: Error
Environment
humidity is
abnormal./
Humidity
sensor is not
connected.
Does this error recur?
Yes
Turn off the power of the
printer and back on.
Replace the control panel
board.
Contact the Service
center.
124: Error
Environment
temperature is
abnormal.
Does this error recur?
Yes
Turn off the power of the
printer and back on.
Replace the control panel
board.
Shut off the electric
power and wait for a
while.
126: The printer is
condensing.
Dew
condensation
of the printer is
detected.
This error can easily occur
when a printer is brought in to
indoor from outdoor.
Leave the printer for 2 hours
or half day under room
temperature, and turn on the
power again.
Does this error recur?
Yes
After leaving a printer
under room temperature,
turn on the power again.
Replace the control panel
board.
Contact the Service
center.
127: Error
Fuser exhaust
fan error
Is the fan connector connected
normally?
Does this error recur?
No
Yes
No
Re-connect it normally.
Replace the fan motor.
Replace the PU board.
Contact the Service
center.
128: Error
ID cooling fan
error
Is the fan connector connected
normally?
Does this error recur?
No
Yes
No
Re-connect it normally.
Replace the fan motor.
Replace the PU board.
Contact the Service
center.
131: Error
~
134: Error
LED head
detection error
(131=
Y,
132=M,
133=C,
134=K)
Is the LED head connected
normally?
Is the LED HEAD fuse brown?
Does this error recur?
No
Yes
Yes
No
Yes
Install the LED head unit
normally.
Check the LED HEAD
fuse.
After checking fuse
Turn on the power again.
For the method of
checking the LED head
unit fuse, refer to section
7.6.
Contact the Service
center.
142: Error
ID Up/Down
position
detection error.
Is the ID unit caught by
anything when it is removed
and re-installed?
Does this error recur?
Yes
No
Yes
Re-install the ID unit.
Turn on the power again.
Replace the ID UP/
DOWN sensor.
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