Description: Desk paper feed unit paper transport motor trouble
Causes: Desk paper feed motor trouble (motor lock, motor rpm abnormality, over-current to the motor). Desk control PWB trouble Connection trouble of the connector and the harness.
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.
Code: U6-20
Description: LCC control PWB - PCU PWB communication error
Causes: Communication error between the LCC control PWB and the PCU PWB. Connection trouble of the harness and the connector between the machine and the LCC and those of the LCC control PWB. LCC control PWB trouble PCU PWB trouble Malfunction due to noises.
Remedy: Check to confirm the LCC model. Check the connection of the harness and the connector between the machine and the LCC and those of the LCC control PWB, and replace if necessary. Check the LCC control PWB, and replace if necessary. Check the PCU PWB, and replace if necessary.
Code: U6-21
Description: LCC transport motor trouble
Causes: LCC transport motor rotation sensor trouble LCC control PWB trouble LCC paper transport mechanism trouble LCC paper transport motor trouble
Remedy: Use SIM4-3 to check the operation of the LCC transport motor. Check the LCC transport motor rotation sensor, and replace if necessary. Check the LCC control PWB, and replace if necessary. Check the LCC paper transport mechanism, and replace if necessary. Check the LCC transport motor, and replace if necessary.
Code: U6-22
Description: LCC 24V power trouble
Causes: Connection trouble of the harness and the connector between the machine and the LCC and those of the LCC control PWB. LCC control PWB trouble Machine power unit trouble
Remedy: Check the connection of the harness and the connector between the machine and the LCC and those of the LCC control PWB, and replace if necessary. Check the LCC control PWB, and replace if necessary. Check the machine power unit, and replace if necessary.
Code: U6-50
Description: Desk - Main unit combination trouble
Causes: Improper combination between the main unit and the desk. Desk control PWB trouble.
Remedy: Install a desk which is proper for the main unit mode. Replace the desk control PWB.
Code: U6-51
Description: LCC - Main unit combination trouble
Causes: LCC control PWB trouble PCU PWB trouble
Remedy: Check to confirm the LCC model. Check the LCC control PWB, and replace if necessary. Check the PCU PWB, and replace if necessary.