• Code: 430
• Description: Quenching lamp error
  At the completion of auto process control initialization, the potential of the drum surface detected by the potential sensor is more than -400V, the prescribed value.
• Causes: • Quenching lamp defective • Quenching lamp harness disconnected • Quenching lamp connector loose, defective

• Code: 440
• Description: Main motor lock
  The main motor lock signal remains low for 2 seconds while the main motor is on.
• Causes: • Drive mechanism overloaded • Motor driver board defective

• Code: 441
• Description: Development motor lock
  The development motor lock signal remains high for 2 seconds while the development motor is on. If this SC is returned on a machine in the field, inspect the toner supply unit coil. If the gear is not damaged replace the coil. If the gear is damaged, the gear shaft is probably deformed, so replace the entire unit.
• Causes: • Drive mechanism overloaded due to toner clumping in the wasted toner path • Motor driver board defective

• Code: 490
• Description: Main fan error
  The main fan motor lock signal goes high for 5 s while the fan is on.
• Causes: • Fan motor overloaded due to obstruction • Fan connector disconnected

• Code: 495
• Description: Toner recycling unit error
  Encoder pulse does not change for 3 s after the main motor switches on.
• Causes: • Waste toner transport has stopped due to motor overload • Toner end sensor detective, disconnected

• Code: 496
• Description: Toner collection bottle error
  The toner collection bottle set switch remains off when the front door is closed.
• Causes: • No toner collection bottle set • Poor connection of the switch connector

• Code: 497
• Description: Toner collection motor error
  The toner collection motor connector set signal remains off for 1 s.
• Causes: • Toner pump motor defective • Motor connector loose, disconnected

• Code: 501
• Description: Tray 1 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. The lower limit sensor of the LCT does not detect the lower limit within 10 sec.
• Causes: • Tray lift motor defective, disconnected • Paper or other obstacle trapped between tray and motor • Pick-up solenoid disconnected, 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.