• Code: SC502
• Description: Paper tray unit 1st tray lift motor malfunction
  • The paper upper limit sensor is not actuated after the tray lift motor has been on for 10 seconds. • The pick-up roller solenoid does not contact the top sheet of paper
• Causes: • Upper limit sensor defective • Tray lift motor defective • Pick-up roller solenoid defective

• Code: SC503
• Description: Paper tray unit 2nd tray lift motor malfunction
  • The paper upper limit sensor is not actuated after the tray lift motor has been on for 10 seconds. • The pick-up roller solenoid does not contact the top sheet of paper
• Causes: • Upper limit sensor defective • Tray lift motor defective • Pick-up roller solenoid defective

• Code: SC504
• Description: Paper tray unit 3rd tray lift motor malfunction
  • The paper upper limit sensor is not actuated after the tray lift motor has been on for 10 seconds. • The pick-up roller solenoid does not contact the top sheet of paper
• Causes: • Upper limit sensor defective • Tray lift motor defective • Pick-up roller solenoid defective

• Code: SC506
• Description: Paper tray unit main motor lock (A549 optional paper tray unit only)
  A paper tray unit motor lock signal is detected. A synchronization error is detected for 20 ms during rotation.
• Causes: • Paper tray unit main motor defective • Interface board defective • Pick-up roller solenoid defective

• Code: SC507
• Description: LCT lift motor malfunction
  1.The LCT upper limit sensor is not actuated after the LCT lift motor has been on for 15.0 seconds. 2. The LCT lower limit sensor is not actuated after the LCT lift motor has been on for 15.0 seconds. 3. The LCT upper limit sensor is not actuated after the LCT lift motor has been on for 1.5 seconds to lift up paper during copying. 4. The LCT upper limit sensor stays actuated after the LCT lift motor has been on for 1.5 seconds to lower the LCT tray. 5. Both the LCT upper and lower limit sensors are actuated when the LCT lift motor starts to lift the LCT tray. 6. The LCT upper limit sensor is outputting an OFF signal when the LCT pick-up solenoid is OFF.
• Causes: • LCT upper limit sensor defective • LCT lower limit sensor defective • LCT lift motor defective • LCT interface board defective • BCU board defective • LCT cover switch defective

• Code: SC521
• Description: Duplex side fence drive motor error
  The side fence jogger home position sensor remains de-actuated for 5.0 seconds when the jogger home position initialization procedure is performed. The side fence jogger home position sensor remains actuated for 0.5 second when moving away from home position.
• Causes: • Side fence jogger home position sensor defective • Side fence jogger motor defective • Duplex control board defective

• Code: SC524
• Description: Duplex end fence drive motor error
  The end fence jogger home position sensor remains de-actuated for 8.0 seconds when the jogger home position initialization procedure is performed. The end fence jogger home position sensor remains actuated for 0.5 second when moving away from home position.
• Causes: • End fence jogger home position sensor defective • End fence jogger motor defective • Duplex control board defective

• Code: SC541
• Description: Fusing thermistor open
  The fusing temperature detected by the thermistor was below 7°C for 10 seconds.
• Causes: • Fusing thermistor open • Fusing lamp open • Poor thermistor connection