• Code: 651
• Description: Incorrect dial up connection
  -001: Program parameter error -002: Program execution error An unexpected error occurs when the modem (Cumin-M) tries to call the center with a dial up connection.
• Causes: • Caused by a software bug
• Remedy: No action required because this SC does not interfere with operation of the machine.

• Code: 669
• Description: EEPROM error
  Retry of EEPROM communication fails three times after the machine has detected the EEPROM error.
• Causes: • Caused by noise
• Remedy: Turn the main power switch off and on.

• Code: 670
• Description: Engine start up error
  The ready signal from the engine board is not detected.
• Causes: • Defective engine board.
• Remedy: Replace the BICU.

• Code: 671
• Description: Engine board mismatch error
  Engine board and controller mismatch detected.
• Causes: • Wrong engine board installed. • Wrong controller board installed. • Check the type of engine board and controller board.
• Remedy: 1. Replace the BICU. 2. Replace the controller board.

• Code: 672
• Description: Controller-to-operation panel communication error at startup
  After powering on the machine, the communication circuit between the controller and the operation panel is not opened, or communication with controller is interrupted after a normal startup.
• Causes: • Controller stall • Controller board installed incorrectly • Controller board defective • Operation panel connector loose or defective
• Remedy: 1. Check the harness connection. 2. Replace the controller board.

• Code: 681
• Description: RFID: Communication error
  • Communication error occurs when the RFID starts to communicate with the RFID receptor. • Retry of RFID communication fails three times after the machine has detected the RFID communication error.
• Causes: • Defective RFID reader and writer • Disconnected ASAP I/F • No memory chip on the toner cartridge • Noise
• Remedy: 1. Replace the RFID controller board. 2. Replace the toner cartridge.

• Code: 682
• Description: Memory chip at TD sensor: Communication error
  Retry of memory chip communication fails three times after the machine has detected the memory chip communication error.
• Causes: • Damaged memory chip data • Disconnected inter face • No memory chip on the development unit • Noise
• Remedy: 1. Replace the PCDU. 2. Replace the BICU.

• Code: 683
• Description: RFID: Unit check error
  The machine gets RFID communication error even the toner cartridges have not been installed in the machine.
• Causes: Caused by noise
• Remedy: Turn the main power switch off and on.