• Code: 728
• Description: Finisher paper stack height error (500sheet 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

• 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 H.P sensor defective • Poor stapler motor connection

• 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 shift motor turned on. (500-sheet finisher) The exit guide plate open sensor or exit guide plate HP sensor does not activate within a certain time after the exit guide plate motor turned on. (1000-sheet finisher)
• Causes: 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 • Exit guide plate open 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 tray HP sensor defective

• Code: 791
• Description: Bridge communication error
  The SBCU cannot communicate with the bridge unit properly when the finisher is installed.
• Causes: • Poor connection between the main machine and bridge unit • SBCU board defective

• Code: 792
• Description: Finisher connection error
  The SBCU cannot communicate with the finisher properly when the bridge unit is installed.
• Causes: • Poor connection between the finisher and bridge unit • SBCU board defective

• Code: 793
• Description: Interchange communication error
  The SBCU cannot communicate with the interchange unit properly when the duplex unit is installed.
• Causes: • Poor connection between the interchange unit and main machine • SBCU board defective

• Code: 800
• Description: Startup without video output end error (K)
  Video transfer to the engine is started, but the engine did not issue a video transmission end command within the specified time.
• Causes: Controller board defective