• Code: SC604
• Description: Communication error between BCU and high voltage control board
  The BCU board cannot communicate with the high voltage control board properly
• Causes: • Poor connection of the interface harness which connects the BCU baord and the high voltage control baord. • High voltage control board defective

• Code: SC605
• Description: Communication error between SCU and BCU
  The SCU board cannot communicate with the BCU board properly.
• Causes: • Poor connection • SCU board defective • BCU board defective

• Code: SC620
• Description: Communication error between BCU and ARDF
  The BCU board cannot start communication with the ARDF properly.
• Causes: • Poor connection • BCU board defective • DF main board defective

• Code: SC621
• Description: Communication error between BCU and finisher
  The BCU board cannot start communication with the finisher properly.
• Causes: • Poor connection • BCU board defective • Finisher main control board defective

• Code: SC623
• Description: Communication error between BCU and paper tray unit
  The BCU board cannot start communication with the paper tray unit properly.
• Causes: • Poor connection • BCU board defective • Paper tray unit defective

• Code: SC625
• Description: GA5 (GAFBTC) Error
  The GA5 did not finish the data transfer to the memory in 20 seconds.
• Causes:

• Code: SC720
• Description: Finisher transport drive motor error
  An abnormal motor condition is detected from the finisher transport drive motor.
• Causes: • Finisher transport drive motor defective • Finisher main control board defective

• Code: SC721
• Description: Finisher tray lift/shift motor error
  An abnormal motor condition is detected from either the finisher tray lift or shift motor.
• Causes: • Finisher tray lift motor defective • Finisher tray shift motor defective • Finisher main control board defective