• Code: 727
• Description: Finisher stapler motor error (500-sheet finisher)
  Stapling does not finish within a certain time after the stapler motor turned on.
• Causes: • Staple jam • Stapler overload caused by trying to staple too many sheets • Stapler motor defective • Defective finisher control board • Defective BICU • Defective Ex-IOB • Incorrect installation

• Code: 728
• Description: Finisher paper stack height error (500-sheet finisher)
  The stack height detection lever does not return to its home position before going to detect the stack height.
• Causes: • Stack height lever solenoid defective • Stack height sensor defective • Lever sensor defective • Main control board defective • Defective finisher control board • Defective BICU • Defective IOB • Incorrect installation

• Code: 730
• Description: Finisher stapler motor error (1000-sheet finisher)
  The stapler does not return to its home position within a certain time after the stapler motor turned on. The stapler H.P sensor does not activate within a certain time after the stapler motor turned on.
• Causes: • Stapler motor defective • Stapler HP sensor defective • Poor stapler motor connection • Defective finisher control board • Defective board • Defective BICU • Defective Ex-IOB • Incorrect installation

• Code: 731
• Description: • Output tray motor error (500-sheet finisher) • Exit guide plate motor error (1000-sheet finisher)
  The tray upper limit sensor does not activate within a certain time after the tray motor turned on (500-sheet finisher). The exit guide plate HP sensor does not activate within a certain time after the exit guide plate motor turned on (1000-sheet finisher).
• Causes: • Defective finisher control board • Defective BICU • Defective Ex-IOB • Incorrect installation 500-sheet finisher • Output tray motor defective • Tray upper limit sensor defective 1000-sheet finisher • Exit guide plate motor defective • Exit guide plate HP sensor defective

• Code: 732
• Description: Finisher shift motor error (1000-sheet finisher)
  Roller shift does not finish within a certain time after the shift motor turned on.
• Causes: • Shift motor defective • Shift HP sensor defective • Defective finisher control board • Defective BICU • Defective Ex-IOB • Incorrect installation

• Code: 740
• Description: Finisher communication error
  • A connection error occurs. • The UART reports a communication error. • In cases other than paper transport, after an every-3-second command is sent, the finisher does not respond within 5 seconds.
• Causes: • Defective finisher control board • Defective BICU • Defective Ex-IOB • Incorrect installation

• Code: 750
• Description: 1st paper tray unit communication error
  • A connection error occurs. • The UART reports a communication error. • In cases other than paper transport, after an every-3-second command is sent, the paper tray unit does not respond within 5 seconds.
• Causes: • Defective paper tray unit control board • Defective BICU • Defective Ex-IOB • Defective connection (Paper tray - main unit)

• Code: 770
• Description: Shift tray unit motor error
  • The machine starts. → The tray motor operates for 2.2 seconds. → The sensor does not detect the operation. • The machine is printing. → The tray motor operates for 2.2 seconds. → The sensor does not detect the operation.
• Causes: • Defective tray motor • Defective sensor • Defective shift tray connector