The Electro‑Craft DDM‑009X (9101‑1946) is a single‑axis digital AC servo drive rated at 2 kW with a 100–240 VAC input and 10 A continuous/30 A peak current capability, commonly used for indexing or point‑to‑point motion control. Known failure modes for this class of drives include power supply voltage sag or spikes, overheating of the internal MOSFETs or IGBTs, failed phase‑current sense resistors, and degradation of the motor driver’s capacitors or inductors. First‑check diagnostics should verify that the input voltage is within spec (100–240 VAC) and that the output current limits are not being exceeded; inspect the drive for visible signs of overheating or component damage; and review any error codes displayed on the front panel or communicated via the control interface before proceeding to deeper module inspection.[oss-gpt-20b]