Read Sharp MX-M850 (serv.man38) Service Manual online
MX-M1100 SELF DIAG AND TROUBLE CODE 8 – 25
L4-15
Fusing front PG control error
L4-29
HDD cooling fan motor trouble
L4-30
Controller fan motor trouble
L4-31
Machine heat exhaust fan 1 trouble
L4-32
Power cooling fan 1 / 2 trouble
L4-34
Polygon cooling fan trouble
L4-36
Toner suction fan trouble
L4-38
Reverse transport cooling fan trouble
Detail
FPGHP is not changed over during the initializing
operation of the fusing front PG motor
operation of the fusing front PG motor
Section
PCU
Cause
Fusing front PG motor trouble.
FPGHP sensor trouble.
PCU PWB trouble.
Harness connection trouble between the PCU PWB and
the fusing front PG motor.
Harness connection trouble between the PCU PWB and
the FPGHP.
FPGHP sensor trouble.
PCU PWB trouble.
Harness connection trouble between the PCU PWB and
the fusing front PG motor.
Harness connection trouble between the PCU PWB and
the FPGHP.
Check &
Remedy
Remedy
Use Sim. 6-1 to check the operation of the fusing front
PG motor.
Use Sim. 30-1 to check the FPGHP sensor.
Check the harness and the connector between the PCU
PWB and the fusing front PG motor.
Check the harness and the connector between the PCU
PWB and the FPGHP.
PG motor.
Use Sim. 30-1 to check the FPGHP sensor.
Check the harness and the connector between the PCU
PWB and the fusing front PG motor.
Check the harness and the connector between the PCU
PWB and the FPGHP.
Detail
The motor lock signal is detected during rotation of the
HDD fan motor.
HDD fan motor.
Section
ICU
Cause
Fan motor trouble.
Harness connection trouble between the controller
PWB and the fan motor.
Control circuit trouble.
Harness connection trouble between the controller
PWB and the fan motor.
Control circuit trouble.
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the
controller PWB and the fan motor.
Check the harness and the connector between the
controller PWB and the fan motor.
Detail
The motor lock signal is detected during rotation of the
controller fan motor.
The motor lock signal is detected during rotation of the
HDD fan motor.
controller fan motor.
The motor lock signal is detected during rotation of the
HDD fan motor.
Section
ICU
Cause
Fan motor trouble.
Harness connection trouble between the controller.
PWB and the fan motor.
Control circuit trouble.
Harness connection trouble between the controller.
PWB and the fan motor.
Control circuit trouble.
Check &
Remedy
Remedy
Check the fan motor operation with Sim. 6-2.
Check connection of the harness and the connector
between the controller PWB and the fan motor.
Check connection of the harness and the connector
between the controller PWB and the fan motor.
Detail
The lock signal is detected during operation of the
machine heat exhaust fan.
machine heat exhaust fan.
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Detail
The lock signal is detected during operation of the
power cooling fan
power cooling fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Detail
The lock signal is detected during the operation of the
polygon cooling fan.
polygon cooling fan.
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Detail
The lock signal is detected during operation of the toner
suction fan.
suction fan.
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Detail
The lock signal is detected during operation of the
reverse transport cooling fan.
reverse transport cooling fan.
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
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