• Code: 750
• Description: 1000/3000-sheet finisher: Tray lift motor error
  The 1st detection failure causes a jam error, and the 2nd failure causes this SC code.
• Causes: The upper tray paper height sensor does not change its status with the specified time after the tray raises or lowers.

• Code: 753
• Description: Return roller motor error
  This occurs during the operation of the lower tray pressure motor
• Causes: • Motor harness disconnected, loose, defective • Motor overloaded • Home position sensor harness disconnected, loose, defective • Home position defective

• Code: 760
• Description: Finisher punch motor error
  The punch HP sensor is not activated within the specified time after the punch motor turned on. The 1st detection failure causes a jam error, and the 2nd failure causes this SC code.
• Causes: • Punch HP sensor disconnected, defective • Punch motor disconnected or defective • Punch motor overload due to obstruction

• Code: 763
• 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 causes a jam error, and the 2nd failure causes this SC code.SC code.
• Causes: • Motor harness disconnected, loose, defective • Defective motor

• Code: 764
• 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 causes a jam error, and the 2nd failure causes this SC code.
• Causes: • Motor harness disconnected, loose, defective • Defective motor

• Code: 791
• Description: Bridge unit error
  The machine recognizes the finisher, but does not recognize the bridge unit.
• Causes: • Defective connector • Broken harnessf

• Code: 792
• Description: Finisher error
  The machine does not recognize the finisher, but recognizes the bridge unit.
• Causes: • Defective connector • Defective harness • Incorrect installation

• 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; change the controller firmware • SD card data defective; use another SD card