• Code: U6-43
• Description: LCT3 reverse winding detection trouble
  It is detected that the wire of the tray is reversely wound.
• Causes: Reverse winding detection SW ON The wire is reversely wound. Reverse winding detection SW trouble Connection trouble of the connector and the harness A3 2-stage LCT control PWB trouble
• Remedy: Check the wire. Replace the reverse winding SW. Check connection of the connector and the harness. Replace the A3 2-stage LCT control PWB.

• Code: U6-44
• Description: LCT3 lock detection trouble
  It is detected that the tray lock mechanism malfunctions
• Causes: Tray lock mechanism breakdown Connection trouble of the connector and the harness Tray lock sensor trouble A3 2-stage LCT control PWB trouble
• Remedy: Check the tray lock mechanism. Check connection of the connector and the harness. Replace the tray lock sensor. Replace the A3 2-stage LCT control PWB.

• Code: U6-49
• Description: LCT3 lift trouble
  The upper limit is not detected within the specified time (A4 LCC: 10sec, A3 LCC: 8sec) when lifting. (A3 3-stage LCT / A4 3-stage LCT) The upper limit is not detected within the specified time when lifting. The limit SW ON is detected when lifting. The encoder signal does not vary when lifting. (A3 2-stage LCT)
• Causes: Upper limit sensor abnormality, tray lift motor lock, connector and harness connection trouble, PWB trouble (A3 3-stage LCT / A4 3-stage LCT) Sensor trouble, upper limit SW trouble, A3 2-stage LCT control PWB trouble, broken gear, lift motor trouble (A3 2-stage LCT)
• Remedy: Use SIM04-02 and SIM04-03 to check the operation of the upper limit sensor and the lift operation. Check the wiring. Fix the trouble, and use SIM15 to cancel the trouble. (A3 3-stage LCT / A4 3-stage LCT) Use SIM04-02 and SIM04-03 to check the operation of the upper limit sensor, the upper limit SW, the encoder sensor, and the lift motor. Fix the trouble, and use SIM15 to cancel the trouble. (A3 2-stage LCT)

• Code: U6-51
• Description: LCC - Main unit combination trouble
  An LCC of a different model which is not supported by the machine is installed. (Improper combination of the machine and the LCC model code.)
• 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.

• Code: U6-53
• Description: Communication trouble between LCT’s
  Communication error between the A3 2-stage LCT (1 series) and the A3 2-stage LCT (2 series) Communication test error when turning ON the power or after canceling the exclusive simulation.
• Causes: Connection trouble or disconnection of the connector and the harness A3 2-stage LCT (1 series) control PWB trouble, A3 2- stage LCT (2 series) control PWB trouble Malfunction caused by noises
• Remedy: Cancel the trouble by turning OFF/ON the power. Check the connector and the harness of the communication line. Replace the A3 2-stage LCT control PWB.

• Code: U6-54
• Description: Option installation combination trouble
  Relay unit installation detection signal abnormality, front LCT installation detection signal abnormality, 2- series installation detection signal abnormality
• Causes: Combination error Connection trouble of the connector and the harness A3 2-stage LCT control PWB trouble
• Remedy: Check the combination of options. Check connection of the harness and the connector from control PWB to each option unit. Replace the A3 2-stage LCT control PWB.

• Code: U6-63
• Description: The lower limit position is not detected within the specified time (10sec) from the start of descending the manual feed tray.
• Causes: Lower limit sensor trouble. Manual feed tray lift motor lock. Connection trouble of the connector and the harness. PWB trouble.
• Remedy: Use SIM04-02 and SIM04-03 to check the operations of the lower limit position sensor and the manual fed tray lift motor. Wiring check. Fix the trouble, and use SIM15 to cancel the trouble.

• Code: U6-68
• Description: Manual feed tray paper feed position abnormality
  The upper limit sensor turns OFF before turning ON the pickup SOL. (Normally the upper limit sensor turns OFF after turning OFF the pickup SOL when starting lifting up.)
• Causes: Sensor trouble. Connection trouble of the connector and the harness. PWB trouble. The pickup roller remains in the lower position. (Mechanism trouble)
• Remedy: Use SIM04-02 and SIM04-03 to check the operations of the upper limit sensor and lift operations. Wiring check.