• Code: SC499
• Description: ITB encoder sensor error The ITB sensor that reads the encoded film strip on the edge of the image transfer belt is sending is operating correctly.
• Causes: • ITB encoder sensor dirty • Sensor harness disconnected or damaged • Encoded scale on the edge of the ITB is damaged or dirty • ITB installed incorrectly

• Code: SC501
• Description: Tray 1 (tandem tray) feed error (Japan Only)
  The tray 1 lift sensor does not switch on 10 s after the tray lift motor switches on and starts lifting the bottom plate. When the tray lowers, the tray lift sensor does not go off within 1.5 sec. The lower limit sensor of the tandem tray does not detect the lower limit within 10 sec.
• Causes: • Tray lift motor harness disconnected, loose, defective • Paper or other obstacle trapped between tray and motor • Tray lift sensor disconnected, damaged • Lower limit sensor disconnected, damaged • Pick-up solenoid disconnected, blocked by an obstacle

• Code: SC502
• Description: Tray 2 (paper cassette) feed error (Japan Only)
  The lift sensor is not activated within 10 seconds after the tray lift motor starts lifting the bottom plate. When the tray lowers, the tray lift sensor does not go off within 1.5 sec. The lower limit sensor of the tandem tray does not detect the lower limit within 10 sec.
• Causes: • Tray lift motor defective or disconnected • Paper or other obstacle trapped between tray and motor • Pick-up solenoid disconnected or blocked by an obstacle

• Code: SC503
• Description: Tray 1 feed error
  The lift sensor is not activated within 10 seconds after the tray lift motor starts lifting the bottom plate. When the tray lowers, the tray lift sensor does not go off within 1.5 sec.
• Causes: • Tray lift motor defective or disconnected • Paper or other obstacle trapped between tray and motor • Pick-up solenoid disconnected or blocked by an obstacle

• Code: SC504
• Description: Tray 2 feed error
  The lift sensor is not activated within 10 seconds after the tray lift motor starts lifting the bottom plate. When the tray lowers, the tray lift sensor does not go off within 1.5 sec.
• Causes: • Tray lift motor defective or disconnected • Paper or other obstacle trapped between tray and motor • Pick-up solenoid disconnected or blocked by an obstacle

• Code: SC505
• Description: Tandem tray rear fence motor error
  The return sensor does not switch on within 10 sec. after the rear fence motor switches on. The HP sensor does not switch on 10 sec. after the rear fence motor switches on. The HP sensor and return sensor switch on at the same time.
• Causes: • Rear fence motor defective or poor connection • Paper or other obstacle interfering with operation of the sensors • Paper or other obstacle trapped between tray and motor • Motor mechanical overload due to obstruction • Return sensor or HP sensor defective or dirty

• Code: SC510
• Description: LCT tray error: B473/D350
  When the bottom plate is lifted, the upper limit sensor does not come on for 30 sec. When the bottom plate is lowered, the lower limit sensor does not come on for 30 sec. After lift begins, the upper limit sensor does not switch on before the pick-up solenoid switches on. The paper end sensor switches on during lift and the upper limit sensor does not switch on for 2.5 s, and a message prompts user to reset paper.
• Causes: • Tray lift motor harness, disconnected, loose, or defective • Tray lift motor defective • Lift sensor defective or disconnected • Pick-up solenoid defective or disconnected • Paper end sensor defective

• Code: SC515
• Description: Duplex jogger motor error 1
  When the jogger fence moves to the home position, the jogger fence HP sensor does not switch on even after the jogger motor has moved the jogger fence 153.5 mm.
• Causes: • Jogger fence motor defective or poor connection • Paper or other obstacle interfering with operation of the sensors or motor • Return sensor or HP sensor defective, dirty, or disconnected • Paper or other obstacle has jammed mechanism • HP sensor connector disconnected or defective • HP sensor defective