The Semifusion Corp. 235704 Servo Turbo Drive is a high‑speed table and cross‑table servo motor controller designed for rapid feed rates (up to 80 ipm) with digital feed control and fluid‑resistant construction. Common failure points in this class of drives include power supply degradation, overheating of the drive ICs, loss of communication on the serial bus, and mechanical wear of limit switches or encoder contacts. First‑check diagnostics: verify the 110 V/6 A input is stable and properly grounded; inspect all wiring for corrosion or loose connections; review any diagnostic LEDs or error codes displayed (limit, over‑temperature, communication faults); and perform a visual inspection of the PCB for burn marks or damaged components before proceeding to deeper troubleshooting.[oss-gpt-20b]