Read Sharp MX-6240N / MX-7040N (serv.man26) Service Manual online
MX-7040N TROUBLESHOOTING 7 – 41
L4-16
Fusing pressure release trouble
L4-17
Drum motor lock trouble (K)
L4-18
Drum motor lock trouble (C)
L4-19
Drum motor lock trouble (M)
L4-20
Drum motor lock trouble (Y)
L4-28
Sub power source cooling fan motor
L4-30
Controller fan motor
L4-31
Paper exit cooling fan F trouble
L4-32
Power source cooling fan 1 trouble
Trouble content
A change in the fusing pressure release sensor signal
cannot be detected within the specified time after
outputting the fusing pressure release motor.
cannot be detected within the specified time after
outputting the fusing pressure release motor.
Detail
PCU
Cause
Fusing pressure release sensor trouble.
Fusing pressure release motor trouble.
Pressure release drive gear and pressure release idle
gear trouble.
PCU PWB trouble.
Connection trouble of the connector and the harness.
Fusing pressure release motor trouble.
Pressure release drive gear and pressure release idle
gear trouble.
PCU PWB trouble.
Connection trouble of the connector and the harness.
Check & Remedy
Replace the fusing pressure release sensor.
Replace the fusing pressure release motor.
Replace the pressure release drive gear and the
pressure release idle gear.
Replace the PCU PWB.
Check connection of the connector and the harness.
Replace the fusing pressure release motor.
Replace the pressure release drive gear and the
pressure release idle gear.
Replace the PCU PWB.
Check connection of the connector and the harness.
Trouble content
The motor lock signal is detected during rotation of the
drum motor (K).
drum motor (K).
Detail
PCU
Cause
Drum motor trouble
Harness connection trouble between the PCU PWB
and the drum motor
Control circuit trouble
Harness connection trouble between the PCU PWB
and the drum motor
Control circuit trouble
Check & Remedy
Use SIM25-01 to check the operation of the drum
motor.
Check the harness and the connector between the
PCU PWB and the developing motor.
Replace the PCU PWB. Replace the drum motor.
motor.
Check the harness and the connector between the
PCU PWB and the developing motor.
Replace the PCU PWB. Replace the drum motor.
Trouble content
The motor lock signal is detected during rotation of the
drum motor (C).
drum motor (C).
Detail
PCU
Cause
Drum motor trouble
Harness connection trouble between the PCU PWB
and the drum motor
Control circuit trouble
Harness connection trouble between the PCU PWB
and the drum motor
Control circuit trouble
Check & Remedy
Use SIM25-01 to check the operation of the drum
motor.
Check the harness and the connector between the
PCU PWB and the developing motor.
Replace the PCU PWB. Replace the drum motor.
motor.
Check the harness and the connector between the
PCU PWB and the developing motor.
Replace the PCU PWB. Replace the drum motor.
Trouble content
The motor lock signal is detected during rotation of the
drum motor (M).
drum motor (M).
Detail
PCU
Cause
Drum motor trouble
Harness connection trouble between the PCU PWB
and the drum motor
Control circuit trouble
Harness connection trouble between the PCU PWB
and the drum motor
Control circuit trouble
Check & Remedy
Use SIM25-01 to check the operation of the drum
motor.
Check the harness and the connector between the
PCU PWB and the developing motor.
Replace the PCU PWB. Replace the drum motor.
motor.
Check the harness and the connector between the
PCU PWB and the developing motor.
Replace the PCU PWB. Replace the drum motor.
Trouble content
The motor lock signal is detected during rotation of the
drum motor (Y).
drum motor (Y).
Detail
PCU
Cause
Drum motor trouble
Harness connection trouble between the PCU PWB
and the drum motor
Control circuit trouble
Harness connection trouble between the PCU PWB
and the drum motor
Control circuit trouble
Check & Remedy
Use SIM25-01 to check the operation of the drum
motor.
Check the harness and the connector between the
PCU PWB and the developing motor.
Replace the PCU PWB. Replace the drum motor.
motor.
Check the harness and the connector between the
PCU PWB and the developing motor.
Replace the PCU PWB. Replace the drum motor.
Trouble content
The motor lock signal is detected during rotation of the
sub power cooling fan motor.
sub power cooling fan motor.
Detail
MFP
Cause
Fan motor trouble, controller PWB trouble, SCN-
Mother PWB trouble, fan motor/SCN-Mother PWB
harness connection trouble, controller PWB/SCN-
Mother PWB connection trouble, control circuit trouble
Mother PWB trouble, fan motor/SCN-Mother PWB
harness connection trouble, controller PWB/SCN-
Mother PWB connection trouble, control circuit trouble
Check & Remedy
Use SIM06-02 to check the operation of the fan motor.
Check the controller PWB, the SCN-Mother PWB, and
the harness and the connector between the fan motor
and the SCN-Mother PWB.
Check the controller PWB, the SCN-Mother PWB, and
the harness and the connector between the fan motor
and the SCN-Mother PWB.
Trouble content
The motor lock signal is detected during rotation of the
controller fan motor.
controller fan motor.
Detail
MFP
Cause
Fan motor trouble, controller PWB trouble, SCN-
Mother PWB trouble, fan motor/SCN-Mother PWB
harness connection trouble, controller PWB/SCN-
Mother PWB connection trouble, control circuit trouble
Mother PWB trouble, fan motor/SCN-Mother PWB
harness connection trouble, controller PWB/SCN-
Mother PWB connection trouble, control circuit trouble
Check & Remedy
Use SIM06-02 to check the operation of the fan motor.
Check the controller PWB, the SCN-Mother PWB, and
the harness and the connector between the fan motor
and the SCN-Mother PWB.
Check the controller PWB, the SCN-Mother PWB, and
the harness and the connector between the fan motor
and the SCN-Mother PWB.
Trouble content
The fan operation signal is not detected within the
specified time in the paper exit cooling fan F
operation.
specified time in the paper exit cooling fan F
operation.
Detail
PCU
Cause
The fan does not rotate because of disconnection of
the fan connector or other trouble.
the fan connector or other trouble.
Check & Remedy
Check the harness and the connector between the
PCU PWB and the fan.
Use SIM6-2 to check that the fan is actually rotating.
PCU PWB and the fan.
Use SIM6-2 to check that the fan is actually rotating.
Trouble content
The fan operation signal is not detected within the
specified time in the power cooling fan 1 operation.
specified time in the power cooling fan 1 operation.
Detail
PCU
Cause
The fan does not rotate because of disconnection of
the ozone exhaust fan or other trouble.
the ozone exhaust fan or other trouble.
Check & Remedy
Check the harness and the connector between the
PCU PWB and the fan.
Use SIM6-2 to check that the fan is actually rotating.
PCU PWB and the fan.
Use SIM6-2 to check that the fan is actually rotating.
Click on the first or last page to see other MX-6240N / MX-7040N (serv.man26) service manuals if exist.