44346001TH Rev.1
145 /
Oki Data CONFIDENTIAL
7. TROUBLESHOOTING
Display
Causes
Error detail
Actions
SERVICE CALL
168:ERROR (Note)
Compensation
thermistor
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.
SERVICE CALL
170:ERROR
171:ERROR (Note)
A fuser
thermistor
short or open
circuit was
detected.
Does the error occur again?
Yes
Turn off and on
the printer.
Replace the fuser
unit.
SERVICE CALL
172:ERROR
173:ERROR
A fuser
thermistor
temperature
error (high
or low
temperature)
was detected.
Does the error occur again?
Does the error occur again?
Yes
Yes
Turn off and on
the printer.
Replace the fuser
unit.
Replace the low-
voltage power
supply, and then
replace the CU/
PU board when
the error occurs
again.
SERVICE CALL
174:ERROR
A backup
thermistor
shot circuit
was detected
(high
temperature)
Does the error occur again?
Yes
Turn off and on
the printer.
Replace the fuser
unit.
SERVICE CALL
175:ERROR (Note)
A backup
thermistor
open
circuit was
detected (low
temperature)
Does the error occur again?
Yes
Turn off and on
the printer.
Replace the fuser
unit.
Display
Causes
Error detail
Actions
SERVICE CALL
176:ERROR
177:ERROR
A backup
thermistor
temperature
error (high
or low
temperature)
was detected.
Does the error occur again?
Does the error occur again?
Yes
Yes
Turn off and on
the printer.
Replace the fuser
unit.
Replace the low-
voltage power
supply.
SERVICE CALL
182:ERROR
Option unit
interface error
Does the error occur again?
Yes
Yes
Turn off and on
the printer.
Be sure of
connector
connection.
Replace the
option unit.
POWER OFF/ON
190:ERROR
System
memory
overflow
Does the error occur again?
Yes
Turn off and on
the printer.
Replace the CU/
PU unit.
SERVICE CALL
200:ERROR
202:ERROR
PU firmware
download
error
An error occurred in re-writing
the PU firmware.
Turn off and on
the printer, and
then re-download
it (In general use
of the printer, this
re-writing is not
performed and
this error does not
occur).
POWER OFF/ON
209:DOWNLOAD
ERROR
Custom
Media
Type table
downloading
failure
Custom Media Type table
downloading failed.
Turn off and on
the printer, and
then re-download
it (In general use
of the printer, this
downloading is
not performed
and this error
does not occur).