2-14
Display
Cause
Error details
Measure
SERVICE CALL
123:ERROR
Ambient
humidity
error or non
connection
of humidity
sensor
Is the cable from the CU/PU
board to the toner sensor
board connected properly?
No
Yes
Re-connect it properly.
Replace the toner
sensor board.
SERVICE CALL
124:ERROR
Ambient
temperature
error
Is the cable from the CU/PU
board to the toner sensor
board connected properly?
No
Yes
Re-connect it properly.
Replace the toner
sensor board.
POWER OFF
AND WAIT FOR A
WHILE
126:CONDENSING
ERROR
Sensor Dewed
Error
SERVICE CALL
127:ERROR
An error of
exhaust fan of
the Fuser
Is the fan's connector
properly connected?
Does the error occur again?
No
Yes
No
Connect properly.
Replace the fan's
motor.
Replace the PU board.
SERVICE CALL
128:ERROR 05
Image drum
fan error
Is the connector of the fan
connected properly?
Does the error occur again?
No
Yes
No
Re-connect it properly.
Replace the fan motor.
Replace the CU/PU
board.
SERVICE CALL
134:ERROR
LED head
detection
error (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
SFP.
Replace the LED head
unit.
SERVICE CALL
153:ERROR
Image drum
unit fuse-cut
error
Is the image drum unit
installed properly?
Does the error occur again?
Is the SFP recovered by
replacing the toner sensor
board.
No
Yes
Yes
No
Re-install it.
Turn off and on the
SFP.
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
Cause
Error details
Measure
SERVICE CALL
163:ERROR
Toner sensor
detection
error (163=K).
This error
does not
occur with
the SFP 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 SFP.
Replace the toner
sensor assembly.
SERVICE CALL
170:ERROR
171:ERROR
A fuser
thermistor
short or open
circuit was
detected.
Does the error occur again?
Yes
Turn off and on the
SFP.
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
SFP.
Replace the fuser unit.
Replace the low-
voltage power supply,
and then replace the
CU/PU board when
the error occurs again.
SERVICE CALL
182:ERROR
Option unit I/F
error
Does the error occur again?
Does the error occur again?
Yes
Yes
Turn off and on the SFP.
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 SFP.
Replace the CU/PU
board.
POWER OFF/ON
203:ERORR *
204:ERORR
207:ERORR
208:ERORR
213:ERORR
214:ERORR
CU program
error (203
to 214 do
not occur in
general use of
the SFP)
Invalid processing was
performed with a CU
program.
Replace the CU/PU
board.
POWER OFF/ON
209:DOWNLOAD
ERROR
Custom
Media
Type table
downloading
failure
Custom Media Type table
downloading failed.
Turn off and on the
SFP, and then re-
download it (In general
use of the SFP, this
downloading is not
performed and this
error does not occur).
2. Procedures for Repairing
