: The high/low speed winding contactors themselves may be worn, stuck, or have failed.
: In some cases, a hard restart can clear transient communication glitches. fanuc 7115 alarm
If these steps do not resolve the issue, specialized diagnostic services from providers like Global Electronic Services or MRO Electric can help identify deeper component failures within the spindle amplifier or control board. : The high/low speed winding contactors themselves may
: Manually inspect the contactors for the spindle. Look for signs of burnt coils or mechanical jams that prevent them from pulling in. fanuc 7115 alarm