44346001TH Rev.1
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Oki Data CONFIDENTIAL
7. TROUBLESHOOTING
Display
Causes
Error detail
Actions
POWER OFF/ON
203:ERROR
204:ERROR
207:ERROR
208:ERROR
213:ERROR
214:ERROR
F0C:ERROR
FFE:ERROR
FFF:ERROR
CU program
error (203
to 214 do
not occur in
general use
of the printer)
Invalid processing was
performed with a CU program.
Replace the CU/
PU board.
SERVICE CALL
231:ERROR
TAG interface
error
A TAG interface error was
detected.
01: A short-circuit error.
02: TAG communication error.
Be sure the toner
cartridges and
the image drums
are properly set.
Replace the toner
cartridges. When
the error occurs
again after the
image drums
are re-installed,
be sure of the
cable connection
from the CU/PU
board to the toner
sensor board.
POWER OFF/ON
250:ERROR
SD card error
SERVICE CALL
251:ERROR
SD card
erasure error
POWER OFF/ON
252:ERROR
255:ERROR
SD card
security error
POWER OFF/ON
256:ERROR
257:ERROR
SD card error
Display
Causes
Error detail
Actions
POWER OFF/ON
901:ERROR
904:ERROR
(Note)
Belt
temperature
error
901: Short
circuit
902: Open
circuit
903: High
temperature
904: Low
temperature
Is the cable from the belt
thermistor to the CU/PU
board connected properly?
Does the error occur again?
No
Yes
No
Connect the cable
properly.
Turn off and on
the printer.
Replace the belt
thermistor.
POWER OFF/ON
923:ERROR
A lock error
with black
image drum
The image drum does not
revolve properly.
Does the error display is
provided again by turning off
and on the printer?
Yes
Yes
Be sure the image
drum is properly
installed properly.
Replace the
image drum unit.
Replace the
image drum
motor.
SERVICE CALL
928:ERROR
Fuser motor
lock error
The fuser does not operate
properly?
Does the error occur again?
Yes
Yes
Check that the
fuser is properly
installed.
Replace the fuser.
Replace the fuser
motor.
SERVICE CALL
933:ERROR
A clock error
correction
error with an
option unit
(which does
not occur with
the printer in
the factory
shipped
configuration)
Does the error occur again?
Does the error occur again?
Yes
Yes
Be sure of
connector
contacts.
Replace the
option unit.