Fanuc Parts Specialists

T: +49 (0) 7158 984130  / sales@cncpart.eu

Fanuc 10/11 Masterboard Alarms

7 Segment LED Codes on FS 10/11/12 master pcb

Unlike Fanuc 3, 6 and Zero masterboards; the Fanuc 10 and 11 masterboards show faults ona seven segment LCD display. On this display alpha numerical charachters appear on the main board sowing the various states the masterboards goes through.

Further upon the SYSTEM 10, 11, 12 CRT screen system alarms are displayed which correspond with the LED characters presented on the masterboard.

  • 1 – Normal Operation.
  • 4 – ACP (CAP CPU) Faulty.
  • 8 – Masterboard Faulty.
  • A – MDI Connection Failure.
  • b – RAM Check Error.
  • c – MDI Failure.
  • d – RAM Parity error.
  • E – Watchdog Alarm / System Error
  • F – I/O connection issues.
  • J – PC Cassette (not readable).
  • L – Waiting for PMC.
  • Nothing – Possibly faulty main power supply unit.
  • Blank Screen – Possibly bad screen or CRT power supply.

Fanuc Parts Specialist:

If your Fanuc SYSTEM 10 or 11 control masterboard alarms then we can help by assisting you with diagnosis and the supply of parts or repair of drivesmotors and control system boards. Further we can build cables on order if required.

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Note: We do not offer the services of trained CNC service engineers.

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