• 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 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

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

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

• Code: 793
• Description: Interchange unit error
  The machine recognizes the duplex unit/1-bin tray unit, but does not recognize the interchange unit.
• Causes: • Incorrect installation • Defective connector • Defective cable

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

• Code: 801
• Description: Startup without video output end error (Y)
  Video transfer to the engine is started, but a video transmission end command is not issued by the engine within the specified time.
• Causes: • Defective controller board

• Code: 802
• Description: Startup without video output end error (M)
  Video transfer to the engine is started, but a video transmission end command is not issued by the engine within the specified time.
• Causes: • Defective controller board