• Code: 611
• Description: Communication break error between SBCU and ADF
  The SBCU receives a break signal from the ADF main board.
• Causes: • Serial line connecting SBCU and ADF unstable • External noise • ADF main board defective • SBCU board defective

• Code: 612
• Description: Communication command error between SBCU and ADF
  The SBCU sends a command to the ADF main board that it cannot execute.
• Causes: • SBCU board defective • Download SBCU firmware again

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

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

• Code: 630
• Description: 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 an SC call, CC call, supply management call, user call, or CE call. • Timeout while no response from the LADP, and abnormal signal on the RS-485 line between PI and LADP.

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

• Code: 641
• Description: SBCU control data transfer abnormal
  A sampling of the control data sent from the SBCU reveals an abnormality.
• Causes: • Controller board defective • External noise • SBCU board defective

• Code: 650
• Description: Communication timeout error between SBCU and duplex unit
  The SBCU cannot receive a response within 1 second from the duplex unit.
• Causes: • Serial line connecting SBCU and duplex unit unstable • External noise • SBCU board and duplex main board connection defective or loose • Duplex main board defective • SBCU board defective