Code :

Code: U6-63
Description: Manual feed tray descending trouble. 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.

Code: U6-69
Description: Manual feed tray lift trouble. The upper limit is not detected within the specified time (10sec) when lifting up.
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: U6-80
Description: Relay unit transport motor trouble.
Causes: Motor lock Motor RPM abnormality Overcurrent to the motor A3 2-stage LCT control PWB trouble
Remedy: Use SIM04-03 to check the operation of the relay unit transport motor. Replace the motor. Replace the A3 2-stage LCT control PWB.

Code: U6-81
Description: Power unit cooling fan motor trouble. A3 2-stage LCT power unit section cooling fan motor abnormality
Causes: Motor lock, motor harness short/open, A3 2-stage LCT control PWB trouble, harness and connector connection trouble
Remedy: Check connection from the A3 2-stage LCT control PWB to the motor. Replace the A3 2-stage LCT control PWB. Replace the motor.

Code: U6-83
Description: Room temperature thermistor breakdown. Room temperature thermistor open or short
Causes: Room temperature thermistor harness connection trouble Room temperature thermistor trouble A3 2-stage LCT control PWB trouble
Remedy: Check connection of the harness and the connector of the room temperature thermistor. Replace the temperature and humidity sensor. Check the A3 2-stage LCT control PWB.

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