Sharp MX-4100N Service Manual page 313

U6-09 LCC lift trouble
Trouble content
Detail PCU
Cause No change in the lift motor rotation sensor signal is
detected within the specified time after outputting the
lift motor ON signal.
The lift motor rotation sensor signal varies though the
lift motor is stopped.
Lift motor rotation sensor trouble.
LCC control PWB trouble
Lift mechanism trouble.
Lift motor trouble.
Connection trouble of the connector and the
harness.
Check & Remedy Use SIM4-2 and 4-3 to check the operation of the
sensor and the lift motor.
Replace the lift motor rotation sensor.
Replace the LCC control PWB.
Replace the lift mechanism.
Replace the lift motor.
Check connection of the connector and the harness.
Use SIM15 to cancel the trouble.
U6-10 Desk paper feed unit paper transport
motor trouble
Trouble content
Detail PCU
Cause Desk paper feed motor trouble (motor lock, motor
rpm abnormality, overcurrent to the motor).
Desk control PWB trouble.
Connection trouble of the connector and the
harness.
Check & Remedy Use SIM4-3 to check the operation of the desk
transport motor.
Replace the desk control PWB.
Replace the desk paper feed motor.
Check connection of the connector and the harness.
U6-20 PCU PWB - LCC communication error
Trouble content
Detail PCU
Cause Error when testing the communication line after
turning ON the power or canceling the simulation.
LCC control PWB trouble.
PCU PWB trouble.
Connector, harness connection trouble.
Strong external noises.
Improper combination between the main unit and the
LCC.
Check & Remedy Cancel the error by turning OFF/ON the power.
Check the connector and the harness in the
communication line.
Replace the LCC control PWB.
Replace the PCU PWB.
MX-5001N SELF DIAG AND TROUBLE CODE 7 – 27
U6-21 LCC paper transport motor trouble
Trouble content
Detail PCU
Cause No change in the paper transport motor rotation
sensor signal is detected within the specified time
after outputting the paper transport motor ON signal.
The paper transport motor rotation sensor signal
varies though the paper transport motor is stopped.
Paper transport motor rotation sensor trouble.
LCC control PWB trouble.
Mechanism trouble.
Paper transport motor trouble.
Connection trouble of the connector and the
harness.
Check & Remedy Use SIM4-3 to check the operation of the paper
transport motor.
Replace the paper transport motor.
Replace the LCC control PWB.
Replace the mechanism.
Replace the paper transport motor.
Check connection of the connector and the harness.
U6-22 LCC 24V power trouble
Trouble content
Detail PCU
Cause The DC24V power is not supplied from the main unit
to the LCC.
Connector, harness connection trouble.
LCC control PWB trouble.
Power source unit trouble.
Check & Remedy Check the connector and the harness in the power
line.
Replace the power unit.
Replace the LCC control PWB.
U6-50 Mismatched Desk unit
Trouble content
Detail PCU
Cause Improper combination between the main unit and the
desk.
Desk control PWB trouble.
Check & Remedy Install a desk which is proper for the main unit mode.
Replace the desk control PWB.
U6-51 LCC - Main unit combination trouble
Trouble content
Detail PCU
Cause Improper combination between the main unit and the
LCC.
LCC control PWB trouble.
Check & Remedy Install a LCC which is proper for the main unit mode.
Replace the LCC control PWB.