• Code: 720-75
• Description: Stacking sponge roller motor
  Occurs during the operation of the stacking sponge roller motor.
• Causes: Defective motor. Motor harness disconnected, loose, defective Motor overloaded. Defective stacking roller HP sensor.
• Remedy: Turn the main power switch off and on.

• Code: 720-80
• Description: Punch movement motor error
  The punch unit moves but is not detected at the home position within the specified time. The 1st detection failure issues a jam error, and the 2nd failure issues this SC code.
• Causes: Defective motor. Motor harness disconnected, loose, defective. Motor overloaded.
• Remedy: Turn the main power switch off and on.

• Code: 720-81
• Description: Paper position sensor slide motor error
  The paper position sensor moves but is not detected at the home position within the specified time. The 1st detection failure issues a jam error, and the 2nd failure issues this SC code.
• Causes: Defective motor. Disconnected, loose or defective harness. Motor overloaded.
• Remedy: Turn the main power switch off and on.

• Code: 770
• Description: Shift motor error
  The shift motor HP sensor does not detect any change for 1.86 seconds after the shift motor has turned on at power on or during its operation.
• Causes: Defective shift motor. Defective shift motor HP sensors.
• Remedy: Turn the main power switch off and on.

• Code: 791
• Description: Bridge unit error
  The machine recognizes the finisher, but does not recognize the bridge unit.
• Causes: The bridge unit is not installed. Defective bridge unit. Re-install the bridge unit. Turn the main power switch off and on.
• Remedy: • Re-install the bridge unit. • Turn the main power switch off and on.

• Code: 792
• Description: Finisher error
  The machine does not recognize the finisher, but recognizes the bridge unit.
• Causes: The finisher's connection is faulty. The finisher is not attached to a device equipped with the bridge unit. Defective finisher.
• Remedy: Reconnect the finisher or bridge unit, and then turn the main power switch off and then back on.

• Code: 816
• Description: Energy saving I/O sub-system error
• Causes: The energy saving I/O sub-system detects an error. • Defective energy saving I/O sub-system • The energy saving I/O sub-system detects a controller board error (No response)
• Remedy: • Turn the main power switch off and on. • Replace the controller board.

• Code: 817
• Description: Monitor error
  This is a file detection and electronic file signature check error when the boot loader attempts to read the self-diagnostic module, system kernel, or root system files from the OS Flash ROM, or the items on the SD card in the controller slot are false or corrupted.
• Causes: OS Flash ROM data defective. SD card data defective. Change the controller firmware. Use another SD card.
• Remedy: • Change the controller firmware. • Use another SD card.