Fanuc alarm: 921 – SUB CPU WATCHDOG ALARM SERVO ALARM (3/4 AXIS)

CNC Machine Alarm Error & Message: 921 – SUB CPU WATCHDOG ALARM SERVO ALARM (3/4 AXIS)
Fanuc Alarm Description:
This is a watchdog timer alarm related to the sub-CPU board or a
servo system alarm for axis 5 or 6. Replace the sub-CPU board or
the axis-5/6 control PC board.

Additional Suggestions & Fanuc alarm: 921 – SUB CPU WATCHDOG ALARM SERVO ALARM (3/4 AXIS) Clarification:
None currently

Troubleshooting Recommendations for (Fanuc alarm: 921 – SUB CPU WATCHDOG ALARM SERVO ALARM (3/4 AXIS)) Error Message:
Post troubleshooting recommendations for (Fanuc alarm: 921 – SUB CPU WATCHDOG ALARM SERVO ALARM (3/4 AXIS) ) error message below.

Fanuc CNC Control Models Applicable:, 0/00/0-mate, 0i


Fanuc alarm: 921 – SUB CPU WATCHDOG ALARM SERVO ALARM (3/4 AXIS)