• Code: 401
• Description: Transfer roller leak error 1
  A transfer roller current leak signal is detected. The current feedback signal for the transfer roller is not detected within the correct time.
• Causes: • High voltage supply board set incorrectly or defective • Transfer roller set incorrectly or damaged • Transfer unit set incorrectly

• Code: 402
• Description: Transfer roller leak error 2
  A transfer roller current leak signal is detected. The current feedback signal for the transfer roller is not detected within the correct time.
• Causes: • Transfer roller set incorrectly or damaged • High voltage supply board set incorrectly or defective

• Code: 411
• Description: Separation bias leak error
  A separation bias leak signal is detected.
• Causes: • High voltage supply board defective • Discharge plate defective

• Code: 490
• Description: Toner supply motor leak error
  More than 1 ampere supplied to the toner supply motor for longer than 200 ms.
• Causes: • Toner supply motor defective

• Code: 500
• Description: Main motor lock
  A main motor lock signal is not detected for more than 500 ms after the main motor starts to rotate, or the lock signal is not detected for more than 500 ms during rotation after the last signal.
• Causes: • Too much load on the drive mechanism • Main motor defective

• Code: 501
• Description: 1st paper tray lift motor malfunction
  The paper lift sensor is not activated after the tray lift motor has been on for 18 seconds.
• Causes: • Paper lift sensor connection loose, disconnected, or damaged • Paper lift sensor defective • Tray lift motor connection loose, disconnected, or damaged • Tray lift motor defective • Obstruction that causes overload on the drive mechanism

• Code: 502
• Description: 2nd paper tray lift motor malfunction
  The paper lift sensor is not activated after the tray lift motor has been on for 18 seconds.
• Causes: • Paper lift sensor connection loose, disconnected, or damaged • Paper lift sensor defective • Tray lift motor connection loose, disconnected, or damaged • Tray lift motor defective • Obstruction that causes overload on the drive mechanism

• Code: 503
• Description: 3rd paper tray lift motor malfunction (optional paper tray unit)
  The paper lift sensor is not activated after the tray lift motor has been on for 18 seconds.
• Causes: • Paper lift sensor connection loose, disconnected, or damaged • Paper lift sensor defective • Tray lift motor connection loose, disconnected, or damaged • Tray lift motor defective • Obstruction that causes overload on the drive mechanism