• Code: SC670
• Description: Engine startup error
  • Engine does not respond within 30 s after power on. • Engine down detected suddenly during power on and warmup.
• Causes: • BCU installation incorrect • BCU defective • Sudden communication reset occurred between the BCU and the controller.

• Code: SC672
• Description: Controller startup error
  • After power on, the line between the controller and the operation panel did not open for normal operation. • After normal startup, communication with the controller stopped.
• Causes: • Controller stalled • Controller installed incorrectly • Controller board defective • Operation panel harness disconnected or defective

• Code: SC680
• Description: BCU-MUSIC communication error
  The main CPU fails to communicate with the MUSIC CPU within 5 sec. and three attempts failed.
• Causes: • Toner cartridge ID chip harness disconnected, defective • Toner cartridge ID chip defective • Toner cartridge installed incorrectly • Toner cartridge defective • UART communication failure; replace the BCU

• Code: SC687
• Description: Memory address command error
  The BCU does not receive a memory address command from the controller 120 seconds after paper is in the position for registration.
• Causes: • BCU-Controller connection loose, defective • BCU defective • Controller defective

• Code: SC701
• Description: Original pickup operation error
  Even though the pickup motor is rotating clock-wise, the pickup roller home position sensor cannot detect the position of the pickup roller.
• Causes: • Pickup roller HP sensor harness loose, disconnected, defective • Pickup roller HP sensor defective • Pickup motor harness loose, disconnected, defective • Pickup motor defective • ARDF control board defective

• Code: SC705
• Description: ARDF bottom plate lift motor
  • The bottom plate HP sensor did not detect the home position of the bottom plate after the bottom plate lift motor switches on and lowers the bottom plate. • The bottom plate position sensor does not detect the position of the plate after the lift motor switches on and raises the bottom plate.
• Causes: • ARDF feed motor disconnected, defective • Bottom plate HP sensor disconnected, defective • ARDF main board defective

• Code: SC720
• Description: Finisher lower transport motor error
  No encoder pulse signal is detected for the transport motor within the prescribed time. The 1st failure issues an original jam message, and the 2nd failure issues this SC code.
• Causes: • Lower transport motor disconnected, defective • Finisher connection to transport motor loose, defective • Lower transport motor defective • Finisher main board defective

• Code: SC721
• Description: Finisher jogger motor error
  The jogger fences move out of the home position but the HP sensor output does not change within the specified number of pulses. The 1st failure issues an original jam message, and the 2nd failure issues this SC code.
• Causes: • Jogger HP sensor disconnected, defective • Jogger motor disconnected, defective • Jogger motor overloaded due to obstruction • Finisher main board and jogger motor connection loose, defective • Finisher main board defective