SP9074
CPU TEST ERROR
Fanuc · αi Series Servo Amplifier
What does SP9074 mean?
An error occurred in a spindle amplifier CPU test. This indicates a hardware fault within the spindle amplifier's central processing unit, requiring replacement of the SPM control board.
Repair Steps
- 1
Replace the SPM control printed-circuit board.
Verified technical data. Last updated: March 2026
Source: Fanuc αi Series Servo Amplifier