• Code: U6-51
• Description: LCC - Main unit combination trouble
• Causes: LCC control PWB troubCombination error Connection trouble of the connector and the harness A3 2-stage LCT control PWB troublele 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
• 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
• 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: Manual feed tray descending trouble
• 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
• 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.

• Code: U6-69
• Description: Manual feed tray lift trouble
• Causes: Upper limit sensor trouble. 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 upper limit sensor and lift operations. Wiring check. Fix the trouble, and use SIM15 to cancel the trouble.

• Code: U6-73
• Description: LCT4 reverse winding detection trouble
• 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: U6-74
• Description: LCT4 lock detection trouble
• 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.