Fanuc alarm SP1980: SERIAL SPINDLE AMP. ERROR
spindle alarm (serial spindle interface, CNC side) · Fanuc 0i-D
What it means
A defective SIC-LSI (the dedicated serial interface large-scale integration device) was detected on the serial spindle amplifier side. The amplifier's own communication controller reported an internal fault, so data exchange with the CNC cannot be trusted.
Likely causes
- Failed SIC-LSI on the spindle amplifier control board
- Board-level damage from a surge or contamination
Triage note: Usually requires SPM control-board repair or amplifier exchange.
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
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A06B-6120-Hxxx
alpha i Spindle Amplifier Module (SPM) · Common cause
Need the part urgently?
Send us alarm SP1980 with your machine details — typical RFQ turnaround is 24–48h.