• Code: SC621
• Description: Mailbox-to-Finisher communication error
  Communication between the mailbox and finisher is interrupted. An ACK/NCK signal was not received within 100 ms after a data frame is sent and 3 retries failed.
• Causes: • Connection cable between mailbox and finisher disconnected, defective • Finisher main board defective • BCU defective • PSU defective

• Code: SC622
• Description: LCT communication error
  Communication between the copier and LCT is interrupted. An ACK/NCK signal was not received within 100 ms after a data frame is sent and 3 retries failed.
• Causes: • Connection cable between the LCT and copier is disconnected, defective • LCT main board defective • BCU defective • PSU defective

• Code: SC624
• Description: Mailbox-to-copier communication error
  Communication between the mailbox and copier is interrupted. An ACK/NCK signal was not received within 100 ms after a data frame is sent and 3 retries failed.
• Causes: • Mailbox cable disconnected, defective • Mailbox main board defective • BCU defective • PSU defective

• Code: SC630
• Description: RSS communication error
  An error was detected in communication via RSS between the machine and the RSS center. Error occurred on a public line at the RSS terminal.
• Causes: • No action required

• Code: SC632
• Description: Key/card counter device error 1
  After 1 data frame is sent to the device, an ACK signal is not received within 100 ms, and is not received after 3 retries.
• Causes: • The serial line from the device to the copier is unstable, disconnected, or defective.

• Code: SC633
• Description: Key/card counter device error 2
  During communication with the device, the BCU received a break (Low) signal.
• Causes: • The serial line from the device to the copier is unstable, disconnected, or defective.

• Code: SC634
• Description: Key/card counter device error 3
  After installation of the device, a message alerts user to a backup RAM error.
• Causes: • Device control board defective • Device control board backup battery defective

• Code: SC635
• Description: Key/card counter device error 4
  After installation of the device a message alerts user to a battery voltage abnormal error.
• Causes: • Device control board defective • Device control board backup battery defective