• Code: 502
• Description: Tray 2 lift malfunction
  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. Tray overload detected when the tray is set.
• 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. • Too much paper loaded in tray Note • At first, the machine displays a message asking the operator to reset the tray. • This SC will not display until the operator has pulled the tray out and pushed it in 3 times. • If the operator turns the machine off/on before the 3rd opening and closing of the tray, the 3-count is reset.

• Code: 503
• Description: Tray 3 lift malfunction
  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. Tray overload detected when the tray is set.
• 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 • Too much paper loaded in tray Note • At first, the machine displays a message asking the operator to reset the tray. • This SC will not display until the operator has pulled the tray out and pushed it in 3 times. • If the operator turns the machine off/on before the 3rd opening and closing of the tray, the 3-count is reset.

• Code: 504
• Description: Tray 4 lift malfunction
  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. Tray overload detected when the tray is set.
• 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 • Too much paper loaded in tray Note: • At first, the machine displays a message asking the operator to reset the tray. • This SC will not display until the operator has pulled the tray out and pushed it in 3 times. • If the operator turns the machine off/on before the 3rd opening and closing of the tray, the 3-count is reset.

• Code: 507
• Description: LCT feed motor malfunction
  One of the following conditions is detected: The LD signal from the feed motor is detected abnormal for 50 ms after the motor switches on. At power on, the motor is detected loose or disconnected.
• Causes: • Feed motor defective • Feed motor connector disconnected • Obstacle interfering with mechanical movement of motor.

• Code: 510
• Description: LCT tray malfunction
  One of the following conditions is detected: When the bottom plate is lifted, the upper limit sensor does not come on for 18 s. When the bottom plate is lowered, the lower limit sensor does not come on for 18 s. 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 defective or connector disconnected • Lift sensor defective or disconnected • Pick-up solenoid defective or disconnected • Paper end sensor defective

• Code: 515
• Description: Tandem rear fence motor error
  One of the conditions is detected: 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 Note • This problem will not issue the SC code on the operation panel. • The machine will prompt the operator to reset tray by opening and closing it. • If the problem persists, the machine will display again and the tray cannot be used.

• Code: 520
• Description: Duplex jogger motor error 1
  When the jogger fence moves to the home position, the jogger HP sensor does not turn on even if the jogger fence motor has moved the jogger fence 153.5 mm.
• Causes: • Paper or other obstacle has jammed mechanism • Sensor connector disconnected or defective • Sensor defective

• Code: 521
• Description: Duplex jogger motor error 2
  When the jogger fence moves from the home position, the jogger fence HP sensor does not turn off even if the jogger motor has moved the jogger fence 153.5 mm.
• Causes: • Paper or other obstacle has jammed mechanism • Sensor connector disconnected or defective • Sensor defective