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MX-4101N SELF DIAG AND TROUBLE CODE 7 – 26
U6-09
LCC lift trouble
U6-10
Desk paper feed unit paper transport
motor trouble
motor trouble
U6-20
PCU PWB - LCC communication error
U6-21
LCC paper transport motor trouble
U6-22
LCC 24V power trouble
U6-50
Mismatched Desk unit
U6-51
LCC - Main unit combination 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.
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.
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.
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.
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.
transport motor.
Replace the desk control PWB.
Replace the desk paper feed motor.
Check connection of the connector and the harness.
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.
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.
Check the connector and the harness in the
communication line.
Replace the LCC control PWB.
Replace the PCU PWB.
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.
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.
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.
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.
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.
line.
Replace the power unit.
Replace the LCC control PWB.
Trouble content
Detail
PCU
Cause
Improper combination between the main unit and the
desk.
Desk control PWB trouble.
desk.
Desk control PWB trouble.
Check & Remedy
Install a desk which is proper for the main unit mode.
Replace the desk control PWB.
Replace the desk control PWB.
Trouble content
Detail
PCU
Cause
Improper combination between the main unit and the
LCC.
LCC control PWB trouble.
LCC.
LCC control PWB trouble.
Check & Remedy
Install a LCC which is proper for the main unit mode.
Replace the LCC control PWB.
Replace the LCC control PWB.
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