Oki C301 Maintenance Manual page 145

Oki Data CONFIDENTIAL
Display Causes
SERVICE CALL Rear-fan error Does the fan at the rear of the
122:ERROR
SERVICE CALL Ambient
123:ERROR humidity
error or non
connection
of humidity
sensor
SERVICE CALL Ambient
124:ERROR temperature
error
SERVICE CALL Image drum
128:ERROR-05 fan error
SERVICE CALL Front fan
128:ERROR-08 error
44951501TH Rev.2
Error detail
No Be sure of the
printer operate? connection of the
fan.
Yes Replace the CU/
PU board.
Is the connector of the fan No Connect the fan
connected properly? properly.
Yes Replace the CU/
PU board.
Is the cable from the CU/PU No Re-connect it
board to the toner sensor board properly.
connected properly? Yes Replace the toner
sensor board.
Is the cable from the CU/PU No Re-connect it
board to the toner sensor board properly.
connected properly? Yes Replace the toner
sensor board.
Is the connector of the fan No Re-connect it
connected properly? properly.
Yes Replace the fan
motor.
Does the error occur again? No Replace the CU/
PU board.
Is the connector of the fan No Re-connect it
connected properly? properly.
Yes Replace the fan
motor.
Does the error occur again? No Replace the CU/
PU board.
Actions Display
SERVICE CALL
131:ERROR
134:ERROR
SERVICE CALL
142:ERROR
SERVICE CALL
153:ERROR
Causes Error detail
LED head Is the LED head installed
detection properly?
error (131=Y,
132=M,
133=C, Is the LED head fuse broken?
134=K)
Does the error occur again?
Image drum Is the image drum unit
up-down removed and installed
movement smoothly?
position
detection
error
Is the connector of the image
drum up-down clutch is
connected properly?
Image drum Is the image drum unit
unit fuse-cut installed properly?
error
Does the error occur again?
Is the printer recovered by
replacing the toner sensor
board.
7. TROUBLESHOOTING
Actions
No Install the LED
head unit.
Yes Check the LED
head fuse.
Yes Check the fuse.
No Turn off and on
the printer.
Yes Replace the LED
head unit.
Yes Re-install it.
No Be sure of the
connection of
the image drum
up-down clutch
connector.
Yes Replace the toner
sensor board.
Connect the
No
image drum up-
down clutch
properly.
No Re-install it.
Yes Turn off and on
the printer.
Yes Be sure of the
cable connection
from the CU/PU
board to the toner
sensor board,
and then replace
the toner sensor
board.
No Replace the CU/
PU board.
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