Description: Desk paper feed unit paper transport motor trouble
Causes: 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.
Remedy: Use SIM4-3 to check the operation of the desk transport motor. Replace the desk control PWB. Replace the desk paper feed motor. Harness and connector connection trouble.
Code: U6-20
Description: PCU PWB - LCC communication error
Causes: 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.
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.
Code: U6-21
Description: LCC paper transport motor trouble
Causes: 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.
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. Harness and connector connection trouble.
Code: U6-22
Description: LCC 24V power trouble
Causes: 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.
Remedy: Check the connector and the harness in the power line. Replace the power unit. Replace the LCC control PWB.
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: Improper combination between the main unit and the LCC. LCC control PWB trouble.
Remedy: Install a LCC which is proper for the main unit mode. Replace the LCC control PWB.