• Code: 680-001
• Description: BICU serial communication error: Time out
• Causes: The serial communication error occurs in the BICU. • Noise • Defective BICU
• Remedy: Replace the BICU.

• Code: 680-002
• Description: BICU serial communication error: Retry error
• Causes: The serial communication error occurs in the BICU. • Noise • Defective BICU
• Remedy: Replace the BICU.

• Code: 680-003
• Description: BICU serial communication error: Download error
• Causes: The serial communication error occurs in the BICU. • Noise • Defective BICU
• Remedy: Replace the BICU.

• Code: 680-004
• Description: BICU serial communication error: UART error
• Causes: The serial communication error occurs in the BICU. • Noise • Defective BICU
• Remedy: Replace the BICU.

• Code: 681
• Description: RFID: Communication error Communication error occurs when the RFID board starts to communicate with the ID chip. Retry of RFID communication fails three times after the machine has detected the RFID communication error.
• Causes: • Defective RFID board • Disconnected ASAP I/F • No memory chip on the AIO • Noise
• Remedy:

• Code: 683
• Description: RFID: Unit check error The machine gets RFID communication error even the AIO has not been installed in the machine.
• Causes: External noise
• Remedy:

• Code: 687
• Description: Memory address (PER) command error The BICU did not receive a memory address command from the controller with the prescribed time once the paper reached the registration sensor.
• Causes: • Harness connection at BICU, Controller board loose or broken • Defective BICU • Defective Controller Board
• Remedy:

• Code: 688
• Description: Print request (PRREQ) command error The BICU did not receive a print request command from the controller with the prescribed time once the paper reached the registration sensor.
• Causes: • Harness connection at BICU, Controller board loose or broken • Defective BICU • Defective Controller Board
• Remedy: