• Code: SC601
• Description: Communication error between BICU and MCU
  The BICU cannot communicate with the MCU board properly.
• Causes: • Poor connection between the BICU and MCU • MCU defective • BICU defective

• Code: SC602
• Description: Communication error between BICU and HDD controller
  The BICU cannot communicate with the HDD controller properly.
• Causes: • Poor connection between the BICU board and HDD control board • BICU board defective

• Code: SC620
• Description: Communication error between BICU and ADF 1
  The TXD and RXD signals between BICU and ADF main board do not stabilize.
• Causes: • Poor connection between the BICU board and ADF main board • Noise on interface cable

• Code: SC621
• Description: Communication error between BICU and ADF 2
  The TXD and RXD signals between BICU and ADF main board do not stabilize.
• Causes: • Poor connection between the BICU board and ADF main board • ADF main board defective • BICU board defective

• Code: SC622
• Description: Communication error between BICU and ADF 3
  Software error after abnormal user operation.
• Causes: • Software error

• Code: SC625
• Description: Communication error between BICU and finisher 1
  The acknowledge signal does not come back from the finisher or mailbox to the BICU board 3 times consecutively.
• Causes: • Finisher or mailbox main board defective • BICU board defective • Poor connection between BICU board and finisher or mailbox main board • Noise on the interface cable

• Code: SC626
• Description: Communication error between BICU and finisher 2
  The BICU board receives a low signal even when the communication line is connected between the BICU board and the finisher or mailbox.
• Causes: • Finisher or mailbox main board defective • BICU board defective • Poor connection between BICU board and finisher or mailbox main board • Noise on the interface cable • Finisher or mailbox is installed with B098

• Code: SC630
• Description: CSS (RSS) communication error between line adapter and CSS center
  Japan only
• Causes: