The Vickers AZE‑CC4Q is a DC servo drive module used in industrial motion control systems, featuring speed enable and torque adjustment functions. Common failure points for this class of drives include power supply degradation (over‑voltage or ripple), overheating of the internal MOSFETs, capacitor leakage on the high‑current paths, and loss of communication with the host controller due to faulty I/O pins. First‑check diagnostics should verify that the input voltage is within spec and free of spikes, inspect the board for burnt components or cracked solder joints, and review any error codes from the drive’s diagnostic LEDs or serial interface before proceeding to component replacement.[oss-gpt-20b]