Causes: D2ULD does not turn ON within the specified time when lift-up operation. D2ULD sensor trouble. Desk control PWB trouble. Lift unit trouble. Connection trouble of the connector and the harness. PCU PWB trouble
Remedy: Replace the D2ULD sensor. Replace the desk control PWB. Replace the lift unit. Harness and connector connection trouble. Replace the PCU PWB.
Code: U6-03
Description: Desk paper feed tray 4 lift trouble
Causes: The D3ULD sensor is not turned ON within the specified time during lift-up operation. D3ULD sensor trouble. Desk control PWB trouble. Lift unit trouble. Connection trouble of the connector and the harness. PCU PWB trouble.
Remedy: Replace the D3ULD sensor. Replace the desk control PWB. Replace the lift unit. Check connection of the connector and the harness. Replace the PCU PWB.
Code: U6-10
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. Harness and connector connection trouble.
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: U7-50
Description: MFP PWB - Vendor machine communication error
Remedy: Cancel the error by turning OFF/ON the power. Check the connector and the harness in the communication line. Change the specifications of the vendor machine (SIM26-3). Replace the LCC control PWB. Replace the MFP PWB.
Code: U7-51
Description: Vendor machine error
Causes: Serial vendor machine trouble. Connector, harness connection trouble.
Remedy: Err.XX" is displayed on the operation panel of the vendor. (XX is the detail code.) Repair the vendor machine referring to the detail code. Check the connector and the harness in the communication line.