Fanuc alarm: 749 – S-SPINDLE LSI ERROR

CNC Machine Alarm Error & Message: 749 – S-SPINDLE LSI ERROR
Fanuc Alarm Description:
It is serial communication error while system is executing after power supply on. Following reasons can be considered. 1) Optical cable connection is fault or cable is not connected or cable is cut. 2) MAIN CPU board or option 2 board is fault. 3) Spindle amp. printed board is fault. If this alarm occurs when CNC power supply is turned on or when this alarm can not be cleared even if CNC is reset, turn off the power supply also turn off the power supply in spindle side.

Additional Suggestions & Fanuc alarm: 749 – S-SPINDLE LSI ERROR Clarification:
None currently

Troubleshooting Recommendations for (Fanuc alarm: 749 – S-SPINDLE LSI ERROR) Error Message:

Fanuc CNC Control Models Applicable:16/18/21, 16i/18i/21i, 160i/180i/210i, , 0i


Fanuc alarm: 749 – S-SPINDLE LSI ERROR