The Yaskawa SGDB‑10ADG is a medium‑power AC servo pack drive, part of the Sigma‑I line, designed for 200–230 V three‑phase input and up to ~1 kW output to control motors in machine tools or robotics. Common failure points on this class of drives include overheating of the power MOSFETs, degradation of the internal capacitors, and failure of the I/O protection circuitry; a shorted motor winding can also trigger overcurrent shutdowns. First‑check diagnostics: verify that the 200–230 V AC supply is within spec and stable, inspect all input/output terminals for loose connections or burnt pins, and review any fault codes displayed on the drive’s panel or communicated via its communication interface before proceeding to a detailed component inspection.[oss-gpt-20b]