The FANUC A06B‑6087‑H145 is an Alpha series power supply module (PSM‑45) designed to feed high‑current servo amplifiers in CNC systems, rated at 55 kW input and 165 A output with a 200–240 VAC, 3‑phase range. Common failure modes include overheating due to clogged cooling fans or inadequate heat sinking, internal capacitor degradation causing voltage ripple, and transformer winding insulation breakdown leading to shorted secondary windings. First‑check diagnostics should verify the incoming AC voltage and phase balance, inspect the module’s fan operation and thermal pads for dust buildup, and review any error codes on the CNC controller that reference “Power Supply” or “PSM‑45”.[oss-gpt-20b]