Fanuc alarm SP9075: CRC TEST ALARM (SPM)
spindle alarm (serial spindle, alpha i) · Fanuc 0i-D
What it means
A CRC (cyclic redundancy check) test inside the spindle amplifier failed. Data integrity checking on internal transfers detected corruption, pointing at failing memory or bus elements within the amplifier.
Likely causes
- Internal data-path hardware fault in the SPM
- Thermally induced instability on the control board
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) · Primary suspect
Need the part urgently?
Send us alarm SP9075 with your machine details — typical RFQ turnaround is 24–48h.