• Code: 620
• Description: Communication timeout error between BICU and finisher or mailbox
  The BICU cannot receive a response within 100 ms after 3 attempts after sending data to the finisher or mailbox.
• Causes: • Serial line connecting BICU and finisher unstable • External noise • BICU board and finisher main board connection defective or loose • Finisher main board defective • BICU board defective

• Code: 621
• Description: Communication timeout error between BICU and finisher or mailbox
  A break (low) signal was received from the finisher or the mailbox.
• Causes: • Serial line connecting BICU and finisher unstable • External noise

• Code: 623
• Description: Communication timeout error between BICU and paper tray unit
  The BICU cannot receive a response within 100 ms after 3 attempts after sending data to the paper tray unit.
• Causes: • Serial line connecting BICU and paper tray unit unstable • External noise • BICU board and paper tray main board connection defective or loose • Paper tray main board defective • BICU board defective

• Code: 624
• Description: Communication break error between BICU and paper tray unit
  The BICU cannot communicate with the paper tray unit normally as a result of receiving a break signal.
• Causes: • Serial line connecting BICU and paper tray unit unstable • External noise • BICU board and LCT main board connection defective or loose • Optional paper feed unit interface board defective • BICU board defective

• Code: 626
• Description: Communication timeout error between BICU and LCT
  The BICU cannot receive a response within 100 ms after 3 attempts after sending data to the LCT.
• Causes: • Serial line connecting BICU and LCT unit unstable • External noise • BICU board and LCT main board connection defective or loose • LCT interface board defective • BICU board defective

• Code: 627
• Description: Communication break error between BICU and LCT
  The BICU cannot communicate with the LCT unit normally as a result of receiving a break signal.
• Causes: • Serial line connecting BICU and LCT unit unstable • External noise • BICU board and LCT main board connection defective or loose • LCT interface board defective • BICU board defective

• Code: 630
• Description: SC630 Communication failure with CSS (RSS)
  The communication from the copier was detected as abnormal at the CSS center. This error occurs when the acknowledge signal from the LADP does not complete normally.
• Causes: • Occurred with a SC call, CC call, Supply Management call, User call, or CE call. • Timeout while no response from the LADP, and signal on the RS-485 line between PI and LADP is abnormal.

• Code: 640
• Description: BICU control data transfer sumcheck error
  A sampling of control data sent from the BICU to the controller reveals a sumcheck error. Only the logging count is performed.
• Causes: • Controller board defective • External noise • BICU board defective