• Code: U5 2
• Description: RADF exit sensor trouble
• Causes: RADF paper exit sensor detection trouble
• Remedy: Case 1 Trouble position/cause RADF paper exit sensor trouble Remedy (Check) Check the RADF paper exit sensor operation. (SIM 2-2) (Repair) Replace the RADF paper exit sensor. / Power Source-ON (After-work) Note Case 2 Trouble position/cause RADF control PWB trouble Remedy (Check) (Repair) RADF control PWB replacement / Power Source-ON

• Code: U5 3
• Description: RADF timing sensor trouble
• Causes: RADF timing sensor detection trouble
• Remedy: Case 1 Trouble position/cause RADF timing sensor trouble Remedy (Check) Check the RADF timing sensor operation. (SIM 2-2) (Repair) Replace the RADF timing sensor. / Power Source-ON (After-work) Note Case 2 Trouble position/cause RADF control PWB trouble Remedy (Check) (Repair) RADF control PWB replacement / Power Source-ON

• Code: U6 20
• Description: PCU MAIN PWB- Large capacity tray (LCC) communication trouble
• Causes: Communication test error in warm-up
• Remedy: Case 1 Trouble position/cause Bad connection of the signal line between the PCU MAIN PWB and the large capacity tray (LCC) control PWB Remedy (Check) Check connection of the signal line between the PCU MAIN PWB and the large capacity tray (LCC) control PWB. (Repair) Repair or replace the cable and the connector between the PCU MAIN PWB and the large capacity tray (LCC) control PWB. / Power Source-ON (After-work) Note Case 2 Trouble position/cause PCU MAIN PWB trouble Remedy (Check) (Repair) Replace the PCU MAIN PWB. / Power Source-ON (After-work) Re-enter setup values and adjustment values. (Install the EEPROM of the defective PCU MAIN PWB to a new PCU MAIN PWB.) Note Case 3 Trouble position/cause Large capacity tray (LCC) control PWB trouble Remedy (Check) (Repair) Large capacity tray (LCC) control PWB replacement / Power Source-ON

• Code: U6 21
• Description: Large capacity tray (LCC) transport motor trouble
• Causes: The rotation sensor output signal does not change when the transport motor is turned ON. / The rotation sensor output signal changes after turning OFF the transport motor.
• Remedy: Case 1 Trouble position/cause Transport motor trouble Remedy (Check) Check the transport motor operation. (SIM 4-3) (Repair) Replace the transport motor. / Power Source-ON (After-work) Note Case 2 Trouble position/cause Transport mechanism section trouble Remedy (Check) Check the transport mechanism section operation. (SIM 4-3) (Repair) Repair or replace the transport mechanism section. / Power Source-ON (After-work) Note Case 3 Trouble position/cause Large capacity tray (LCC) control PWB trouble Remedy (Check) (Repair) Large capacity tray (LCC) control PWB replacement / Power Source-ON

• Code: U6 22
• Description: Large capacity tray (LCC) 24V power trouble
• Causes: DC24V power is not supplied to the large capacity tray (LCC).
• Remedy: Case 1 Trouble position/cause Bad connection between the DC MAIN power PWB and the large capacity tray (LCC) Remedy (Check) "Check connection between the fuse (F708), the DC MAIN power PWB and the large capacity tray (LCC)." (Repair) Replace the fuse (F708). Repair or replace the wire and the connector between the DC MAIN power PWB and the large capacity tray (LCC) control PWB. / Power Source-ON (After-work) Note Case 2 Trouble position/cause Large capacity tray (LCC) control PWB trouble Remedy (Check) (Repair) Large capacity tray (LCC) control PWB replacement / Power Source-ON

• Code: U6 9
• Description: Large capacity tray (LCC) lift motor trouble
• Causes: The rotation sensor output signal does not change when the lift motor is turned ON. / The rotation sensor output signal changes after turning OFF the lift motor.
• Remedy: Case 1 Trouble position/cause Lift motor rotation sensor trouble Remedy (Check) Check the lift motor rotation sensor operation. (Repair) Replace the lift motor rotation sensor. / SIM 15 (After-work) Note Case 2 Trouble position/cause "Lift mechanism (motor, etc.) trouble" Remedy (Check) "Check the lift mechanism (motor, etc.) operation. (SIM4-3)" (Repair) Replace the lift unit (lift motor). / SIM 15 (After-work) Note Case 3 Trouble position/cause Large capacity tray (LCC) control PWB trouble Remedy (Check) (Repair) Replace the large capacity tray (LCC) control PWB. / SIM 15 (After-work) Note Case 4 Trouble position/cause PCU MAIN PWB trouble Remedy (Check) (Repair) Replace the PCU MAIN PWB. / SIM 15 (After-work) Re-enter setup values and adjustment values. (Install the EEPROM of the defective PCU MAIN PWB to a new PCU MAIN PWB.)

• Code: U7 0
• Description: RIC communication trouble
• Causes: Communication test error in warm-up
• Remedy: Case 1 Trouble position/cause Bad connection of the signal line between the PCU MAIN PWB and the RIC I/F. Remedy (Check) Check connection of the signal line between the PCU MAIN PWB and the RIC I/F. (Repair) Repair or replace the cable and the connector between the PCU MAIN PWB and the RIC I/F / Power Source-ON (After-work) Note Case 2 Trouble position/cause PCU MAIN PWB trouble Remedy (Check) (Repair) Replace the PCU MAIN PWB. / Power Source-ON (After-work) Re-enter setup values and adjustment values. (Install the EEPROM of the defective PCU MAIN PWB to a new PCU MAIN PWB.)

• Code: UC 0
• Description: ICU SCAN PWB -CPT PWB communication trouble
• Causes: ICU SCAN PWB / CPT PWB
• Remedy: Case 1 Trouble position/cause CPT PWB trouble Remedy (Check) CPT PWB connector check (Repair) CPT PWB replacement / Power Source-ON (After-work) Note Case 2 Trouble position/cause ICU SCAN PWB trouble Remedy (Check) ICU SCAN PWB connector check (Repair) ICU SCAN PWB replacement / Power Source-ON