44346001TH Rev.1
144 /
Oki Data CONFIDENTIAL
7. TROUBLESHOOTING
Display
Causes
Error detail
Actions
SERVICE CALL
131:ERROR
134:ERROR
LED head
detection
error (131=Y,
132=M,
133=C,
134=K)
Is the LED head installed
properly?
Is the LED head fuse broken?
Does the error occur again?
No
Yes
Yes
No
Yes
Install the LED
head unit.
Check the LED
head fuse.
Check the fuse.
Turn off and on
the printer.
Replace the LED
head unit.
SERVICE CALL
142:ERROR
Image drum
up-down
movement
position
detection
error
Is the image drum unit
removed and installed
smoothly?
Is the connector of the image
drum up-down clutch is
connected properly?
Yes
No
Yes
No
Re-install it.
Be sure of the
connection of
the image drum
up-down clutch
connector.
Replace the toner
sensor board.
Connect the
image drum up-
down clutch
properly.
SERVICE CALL
153:ERROR
Image drum
unit fuse-cut
error
Is the image drum unit
installed properly?
Does the error occur again?
Is the printer recovered by
replacing the toner sensor
board.
No
Yes
Yes
No
Re-install it.
Turn off and on
the printer.
Be sure of the
cable connection
from the CU/PU
board to the toner
sensor board,
and then replace
the toner sensor
board.
Replace the CU/
PU board.
Display
Causes
Error detail
Actions
SERVICE CALL
154:ERROR
Belt unit fuse-
cut error
Is the belt unit installed
properly?
Does the error occur again?
No
Yes
Yes
Re-install it.
Turn off and on
the printer.
Be sure of cable
connection, and
then replace the
CU/PU board.
SERVICE CALL
155:ERROR
Fuser unit
fuse-cut error
Is the fuser unit installed
properly?
Does the error occur again?
No
Yes
Yes
Clean the
connection
connector of the
fuser unit, and
then re-install the
fuser unit.
Turn off and on
the printer.
Be sure of cable
connection, and
then replace the
CU/PU board.
SERVICE CALL
160:ERROR
163:ERROR
Toner sensor
detection
error (160=Y,
161=M,
162=C,
163=K).
This error
does not
occur with
the printer in
the factory
shipped
configuration.
Is the toner cartridge
installed?
Is the toner slide shutter set?
No
No
Yes
Install the toner
cartridge.
Turn it to the fixed
position. Turn off
and on the printer.
Replace the toner
sensor assembly.
SERVICE CALL
167:ERROR
Thermistor
slope error
Does an error message
appear?
Does the error occur again?
Yes
Turn off and on
the printer.
Turn off and on
the printer after
leaving it for 30
minutes.