• Code: U6 00
• Description: Desk communication trouble
• Causes: Desk communication error, communication test error when turning on the power or after canceling the exclusive simulation.
• Remedy: Case 1 Cause Improper connection or disconnection of the connector and the harness. Check & Remedy Check the connector and the harness in the communication line. Turn OFF/ON the power to cancel the error. Case 2 Cause Desk control PWB trouble, control PWB (PCU) trouble, malfunction caused by noises Check & Remedy Turn OFF/ON the power to cancel the error.

• Code: U6 01
• Description: Desk tray 1 lift motor trouble
• Causes: DLUD1 does not turn on within the specified time.
• Remedy: Case 1 Cause DLUD1 sensor trouble, paper feed unit harness disconnection Check & Remedy Check DLUD1 and the harness and the connector. Case 2 Cause Cassette 1 lift-up motor trouble, desk PWB, lift-up unit trouble Check & Remedy Check the lift-up unit.

• Code: U6 02
• Description: Desk tray 2 lift motor trouble
• Causes: DLUD2 does not turn on within the specified time.
• Remedy: Case 1 Cause DLUD2 sensor trouble, paper feed unit harness disconnection Check & Remedy Check DLUD2 and the harness and the connector. Case 2 Cause Desk cassette 2 lift-up motor trouble, desk PWB, lift-up unit trouble Check & Remedy Check the lift-up unit.

• Code: U6 03
• Description: Desk tray 3 lift motor trouble
• Causes: DLUD3 does not turn on within the specified time.
• Remedy: Case 1 Cause DLUD3 sensor trouble, paper feed unit harness disconnection Check & Remedy Check DLUD3 and the harness and the connector. Case 2 Cause Desk cassette 3 lift-up motor trouble, desk PWB, lift-up unit trouble Check & Remedy Check the lift-up unit.

• Code: U6 09
• Description: LCC lift motor trouble
• Causes: • The encoder input value does not change in 0.13sec (first time)/0.5sec (second time or later) after rotation of the motor. • The motor is rotated for 18sec or more. • The encoder changes after the specified time from termination of the motor. (2sec and 10 counts or more)
• Remedy: Common Check Use SIM 4-2 and 4-3 to check the sensor operation and the lift motor operation. Cancel the trouble with SIM 15. Case 1 Cause Sensor trouble Check & Remedy Replace the sensor. Case 2 Cause LCC control PWB trouble Check & Remedy Replace the LCC control PWB. Case 3 Cause Gear breakage Check & Remedy Replace the gear. Case 4 Cause Lift motor trouble Check & Remedy Replace the lift motor.

• Code: U6 10
• Description: Desk transport motor trouble
• Causes: Desk transport motor operation trouble
• Remedy: Case 1 Cause Motor lock, motor RPM abnormality, Over current to the motor, saddle finisher control PWB trouble Check & Remedy Use SIM 4-3 to check the desk transport motor operation.

• Code: U6 20
• Description: LCC communication trouble
• Causes: Communication error with the LCC. Communication line test error after turning on the power or canceling an exclusive simulation. Discrepancy of the model code between the LCC and the machine.
• Remedy: Common Turn OFF/ON the power to cancel the error. Case 1 Cause Improper connection or disconnection of the connector and the harness. Check & Remedy Check the connector and the harness in the communication line. Case 2 Cause LCC control PWB trouble Check & Remedy Replace the LCC control PWB. Case 3 Cause Control PWB (PCU) trouble Check & Remedy Replace the control PWB (PCU). Case 4 Cause Malfunction caused by noises Check & Remedy Turn OFF/ON the power to cancel the error.

• Code: U6 21
• Description: LCC transport motor trouble
• Causes: • The encoder input value does not change in 0.06sec after turning on the motor. • The encoder input changes after the specified time from turning off the motor. (100 or more counts are made in 0.1sec after 5sec.)
• Remedy: Case 1 Cause Motor lock, motor RPM abnormality. Over current to the motor, saddle finisher control PWB trouble Check & Remedy Use SIM 4-3 to check the transport motor operation.