Fanuc A20B-0007-0360/06A control board

The Fanuc A20B‑0007‑0360/06A is a velocity‑control servo drive PCB used in CNC machining centers; it integrates the motor driver and an on‑board 24 V DC power supply. Common failure modes for this board include burnt or degraded MOSFETs, damaged gate drivers, and overheating of the integrated power supply due to insufficient ventilation or excessive load. Initial checks should verify that the 24 V input is stable and within spec, inspect the board for visible burn marks or swollen capacitors, and review any error codes or fault LEDs displayed on the CNC control panel.[oss-gpt-20b]

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