• Code: 569-01
• Description: Fusing shutter sensor error
  Fusing shutter plate home position sensor error is detected three consecutive times.
• Causes: Defective fusing shutter plate. Defective photo interrupter. Defective connectors.
• Remedy:

• Code: 571
• Description: Pressure roller thermistor error: Center
  The center temperature of the pressure roller measured by the thermistor does not reach 0°C for 8 seconds.
• Causes: Defective thermopile. Defective thermistor. Loose connection.
• Remedy:

• Code: 572-02
• Description: Pressure roller thermistor warm-up error: Center
  The center temperature of the pressure roller measured by the thermistor does not reach 41°C within 8 seconds after the heater turns on.
• Causes: Dirty thermopile lenses. Deformed thermistor.
• Remedy:

• Code: 573
• Description: Pressure roller overheat : Center (software error)
  The detected pressure roller temperature stays at 230°C or more for 1 second for 10 consecutive times.
• Causes: The triac has shorted out. Defective IOB. Defective BCU.
• Remedy:

• Code: 574
• Description: Pressure roller overheat : Center (hardware error)
  The thermistor detects 240°C or more.
• Causes: Defective PSU. Defective BCU. Defective IOB. Defective fusing control system.
• Remedy: • Replace the PSU. • Replace the BCU. • Replace the IOB. • Replace the fusing unit and reset the counter of the fusing unit using SP3-902-014. Important: The fusing unit cannot be used because an abnormal high temperature was detected. • After this SC occurs, the counter reset of the fusing unit should be done manually using SP3-902-014 because the counter reset is not done automatically. • After replacing fusing unit, to set SP5-810-2 is necessary to reset this SC.

• Code: 581
• Description: NC sensor broken: Center
  The sensor detects -17°C or less for 6 seconds
• Causes: Defective thermopile. Defective thermistor. Loose connection.
• Remedy:

• Code: 591
• Description: NC sensor broken: End
  The sensor detects -17°C or less for 6 seconds.
• Causes: Broken cables of thermopile. Broken cables of thermistor. Loose connection.
• Remedy:

• Code: 621
• Description: Finisher/Mail box communication error
  An error occurs during line connection. A communication error report is received from the UART.
• Causes: The finisher's control board is faulty. Defective BCU/IOB. The finisher's connection is faulty. Reconnect the finisher/mail box cables.
• Remedy: • Reconnect the finisher/mail box cables. • Replace the BCU. • Replace the finisher/mail box. • Turn the main power switch off and on.