Oki C711 - Page 147

44205401TH Rev.1
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Oki Data CONFIDENTIAL
7. Troubleshooting and repair procedure
Display Cause Error details Remedial measure
Service call
150: Error~
153: Error
The ID unit
fuse has
blown out.
(150=Y,
151=M,
152=C,
153=K)
Is the ID unit installed normally?
Does this error recur?
Does the printer recover from
the error when the PU/PRZ
board is replaced?
No
Yes
Yes
No
Re-install the ID
unit.
Turn on the power
again.
After checking
for the sure
connection of the
cable between
PRZ board and
CU/PU board,
replace the PRZ
board.
Replace the CU/
PU board.
Service call
154: Error
The belt unit
fuse has
blown out.
Is the belt unit connected
normally?
Does this error recur?
No
Yes
Yes
Re-install the belt
unit.
Turn on the power
again.
After checking
for the sure cable
connection,
replace the CU/PU
board.
Service call
155: Error
The fuser
unit fuse has
blown out.
Is the fuser unit installed
normally?
Does this error recur?
No
Yes
Yes
After cleaning
the connecting
connector of the
fuser unit, re-install
the fuser unit.
Turn on the power
again.
After checking
for the sure cable
connection,
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 default
settings.
Is the toner cartridge installed?
Is the lock lever of the toner
set?
Does this error recur?
No
No
Yes
Install the toner
cartridge.
Rotate the lock
lever of toner to the
lock position.
Turn on the power
again.
Replace the toner
sensor assembly.
Display Cause Error details Remedial measure
Service call
167: Error
Thermistor
Slope Error
Is the error message displayed?
Does this error recur?
Yes
Turn on the power
again.
After leaving a
printer for 30
minutes, turn on
the power again.
Service call
168: Error
Note)
Compensation
Thermistor
Error
Is the error message displayed?
Does this error recur?
Yes
Turn on the power
again.
After leaving a
printer for 30
minutes, turn on
the power again.
Service call
170: Error
171: Error
Note)
Short-circuit or
open-circuit of
fuser thermistor
is detected.
Does this error recur?
Yes
Turn on the power
again.
Replace the fuser
unit.
Service call
172: Error
173: Error
The fuser
thermistor
has detected
an abnormal
temperature
(high
temperature
or low
temperature.)
Does this error recur?
Does this error recur?
Yes
Yes
Turn on the power
again.
Replace the fuser
unit.
Replace the low
voltage power
supply unit.
Service call
174: Error
The backup
roller
thermistor is
detected of its
short-circuit.
(At high
temperature)
Does this error recur? Yes
Turn on the power
again.
Replace the fuser
unit.
Service call
175: Error
Note)
The backup
roller
thermistor
is detected
of its open-
circuit. (At low
temperature)
Does this error recur? Yes
Turn on the power
again.
Replace the fuser
unit.