TDE DSC axis drivers (e.g., DSC20N/BX, DSC06n/bx) are three‑phase industrial servo drives rated 180–240 VAC and up to 20 A, used to control motor axes in CNC routers and automation equipment. Common failure points for this class of units include power supply over‑voltage or ripple damaging the IGBT/diode bridge, overheating of the heat sink leading to thermal shutdown, and loss of communication with the host controller due to faulty serial/ethernet interfaces or damaged signal connectors. First‑check diagnostics should verify that the input voltage is within spec and free of spikes, inspect the heatsink for proper mounting and fan operation, and confirm that all I/O pins are intact and correctly terminated; reviewing any logged error codes on the drive’s LCD or host interface will often pinpoint a specific fault such as “Overcurrent” or “Communication Timeout.”[oss-gpt-20b]