Fanuc 15m Manual — Complete & Validated

| Alarm # | Message | Likely Cause | |---------|---------|---------------| | 100 | P/S alarm (parameter write enable) | PWE = 1 | | 401 | Servo alarm: VRDY off | Servo amp not ready | | 414 | Servo alarm: X-axis LSI error | Axis card failure | | 438 | Spindle alarm (serial link) | Spindle drive or fiber | | 910 | DRAM parity error (low byte) | Main board memory |

I cannot produce the actual (copyrighted material by Fanuc Ltd.), but I can create a comprehensive technical reference sheet and a "cheat sheet" for operators and programmers based on the official manual’s common contents. Fanuc 15m Manual