MX-C250 TROUBLESHOOTING 7 – 12
L1-00
Scanner feed trouble
L3-00
Scanner return trouble
L4-02
Paper feed motor trouble
L4-03
Fusing motor lock trouble
L4-04
Developing motor trouble (BLACK)
L4-06
Transfer unit lift trouble
L4-17
Drum motor lock trouble
L4-32
Power source cooling fan trouble
Cause
Scanner feed is not completed within the specified
time.
Scanner unit trouble.
MFPC PWB trouble
Harness and connector connection trouble.
Scanner home position sensor trouble.
Scanner motor trouble.
Check & Remedy
Use SIM1-1 to check the scan operation.
Replace the scanner unit.
Replace the MFPC PWB.
Check connection of the connectors and the
harness.
Replace the scanner home position sensor.
Replace the scanner motor.
Cause
Scanner return is not completed within the
specified time.
Scanner unit trouble.
MFP PWB trouble
Harness and connector connection trouble.
Scanner home position sensor trouble.
Scanner motor trouble.
Check & Remedy
Use SIM1-1 to check the scan operation.
Replace the scanner unit.
Replace the MFP PWB.
Check connection of the connectors and the
harness.
Replace the scanner home position sensor.
Replace the scanner motor.
Trouble content
A lock signal is not detected within the specified time
in ON operation of the paper feed motor after
warming-up or canceling a jam.
Cause
Paper feed motor trouble
Paper feed motor harness and connector connection
trouble
MFPC PWB trouble
Check & Remedy
Use SIM6-1 to check the operation of the paper feed
motor.
Replace the paper feed motor.
Check connection of the paper feed motor harness
and the connector.
Replace theMFPC PWB.
Cause
The motor lock signal is detected during rotation of
the fusing motor.
Fusing motor trouble.
MFPC PWB trouble.
Connection trouble of the connector and the
harness.
Check & Remedy
Use Sim6-1 to check the operation of the fusing
motor.
Replace the fusing motor.
Replace the MFPC PWB.
Check connection of the connector and the
harness.
Cause
The motor lock signal is detected during rotation of
the developing motor.
Developing motor trouble.
Harness and connector connection trouble.
MFPC PWB trouble
Developing unit trouble.
Check & Remedy
Use SIM25-1 to check the operation of the
developing motor.
Replace the developing motor.
Check connection of the connectors and the
harness.
Replace the MFPC PWB.
Replace the developing motor.
Replace the developing unit.
Cause
Transfer unit position sensor trouble.
MFPC PWB trouble.
Connection trouble of the connector and the
harness.
Transfer unit separation clutch operation trouble.
Primary transfer belt unit is not installed.
Check & Remedy
Use SIM6-3 to check the separating operation of
the transfer unit.
Install the primary transfer belt unit.
Replace the transfer unit position sensor.
Replace the MFPC PWB.
Harness and connector connection trouble.
Replace the transfer unit separation clutch.
Cause
Drum motor trouble
Connection trouble of the connector and the
harness between MFPC PWB and the drum motor
MFPC PWB trouble
Check & Remedy
Check the operation of the drum motor with SIM
25-01
Check the connection of the connector and the
harness between MFPC PWB and the drum motor
Replace the drum motor
Replace the MFPC PWB
Cause
The fan operation signal is not detected within the
specified time in the power cooling fan operation.
Power cooling fan trouble.
MFPC PWB trouble.
Connection trouble of the connector and the
harness.
Check & Remedy
Use SIM6-2 to check the rotating operation of the
fan.
Replace the power cooling fan.
Replace the MFPC PWB.
Check/replace the connector or the harness.
