The Vickers APS7500 is a servo drive unit used as the power supply/drive in Cincinnati Arrow 1000 CNC systems and similar industrial motion control setups. Common failure points for this class of drives include over‑temperature shutdowns, phase loss or imbalance on the motor outputs, and degradation of internal capacitors or MOSFETs leading to erratic torque behavior. First‑check diagnostics: verify that the drive’s input voltage is within spec and that all output currents are balanced; inspect the PCB for burnt components or cracked solder joints; and review any stored error codes or diagnostic LEDs on the unit before proceeding with component replacement or board refurbishment.[oss-gpt-20b]