• Code: 694
• Description: Controller board communication abnormal
  Communication error between the scanner part of the controller board and BICU.
• Causes: • The connector is abnormal between the controller board and the BICU board.

• Code: 760
• Description: ADF gate abnormal 1
  The ADF Gate signal line between the ADF main board and the BICU is disconnected.
• Causes: • ADF main board defective
  • Input/output board defective
  • Poor connection (ADF Gate line) between the ADF main board and the BICU.

• Code: 761
• Description: ADF gate abnormal 2
  The FGATE signal is not issued from the ADF within 30 seconds after the ADF starts feeding.
• Causes: • ADF connector defective
  • SBU board defective

• Code: 762
• Description: ADF gate abnormal 3
  The FGATE signal is not terminated by the ADF within 60 seconds after the ADF starts feeding.
• Causes: • ADF connector defective
  • SBU board defective

• Code: 903
• Description: Engine total counter error
  The checksum of the total counter is not correct.
• Causes: • NVRAM on the BICU defective

• Code: 928
• Description: Memory error
  The machine detects a discrepancy in the write/read data during its write/read test (done at power off/on and at recovery from low power or night/ off mode).
• Causes: • Memory defective
  • BICU defective
  • Poor connection between BICU and memory

• Code: 929
• Description: IMAC hardware error
  A memory control job is not completed within a certain period.
• Causes: • BICU defective
  • Poor connection

• Code: 981
• Description: NVRAM error
  The machine detects a discrepancy in the NVRAM write/ read data when attempting to save actual data to the NVRAM (i.e. during actual use).
• Causes: • NVRAM defective
  • Poor connection between BICU and NVRAM
  • NVRAM is not connected
  • BICU defective