• Code: U5 11
• Description: RADF paper feed motor operation abnormality. Paper feed motor driving error
• Causes: Motor lock Improper motor speed Overcurrent to motor RADF control PWB defective
• Remedy: Check paper feed motor operation with SIM2-3,4.

• Code: U5 16
• Description: RSPF fan motor operation abnormality. An abnormality is detected by the input of RSPF fan motor alarm signal.
• Causes: Motor lock. RSPF control PWB trouble. Bad connection of RSPF motor harness.
• Remedy: Check the fan motor operation with SIM2-2.

• Code: U6 00
• Description: Desk communication trouble. Failed communication with desk Communication line test error occurs when power is turned on or after the exit of a simulation mode.
• Causes: Improper connection or broken wire of connector or harness Desk control PWB defective Control PWB (PCU) defective Malfunction due to noise.
• Remedy: Clear the trouble by turning the power supply On/Off. Check communication line connector and harness.

• Code: U6 01, U6 02, U6 03
• Description: Desk 1, 2, 3 CS lift-up trouble. Desk cassette lift-up trouble (1st - 3rd cassettes).
• Causes: Defective sensor RADF control PWB defective Broken gear Lift-up motor defective
• Remedy: Check lift-up sensor detection with SIM4-2. Check lift-up motor with SIM4-3.

• Code: U6 08
• Description: Desk 24-V power abnormality. No supply of DC24V to desk
• Causes: Improper connection or broken wire of connector or harness Desk control PWB defective Power supply unit defective
• Remedy: Check power supply line connector and harness. Check 24-V voltage on power supply unit and desk control PWB.

• Code: U6 09
• Description: LCC lift motor trouble
• Causes: Sensor trouble LCC control PWB trouble Gear breakage Lift motor trouble
• Remedy: Check the sensor detection with SIM 4-2. Check the lift motor operation with SIM 4-3.

• Code: U6 10
• Description: Desk transport motor operation trouble
• Causes: Motor lock Improper motor speed Overcurrent to motor RADF control PWB defective
• Remedy: Check transport motor operation with SIM4-6.

• Code: U6 20
• Description: LCC communication trouble Error when power is turned on or in communication line test after exiting SIM.
• Causes: Connector harness improper connection or disconnection LCC control PWB trouble Control PWB (PCU) trouble Malfunction by noise
• Remedy: Canceled by turning on the power. Check the connector and harness of the communication line.