The Mitsubishi Electric EX8 ANCA‑05‑G is a high‑performance AC servo drive used in motion control applications such as CNC machines and industrial robots. Common failure modes for this class of drives include over‑temperature shutdowns, phase loss or imbalance, insulation breakdown between windings, power supply voltage spikes, and communication errors with the host controller. First‑check diagnostics: verify that the input voltage is within spec and the drive’s temperature sensor reads correctly; inspect all wiring connections for loose terminals or damaged insulation; review any fault codes displayed on the drive’s panel or communicated via the CANopen/Modbus interface to identify specific error flags.[oss-gpt-20b]