The Mazak FB‑C‑V0 94V‑0 Chiller Unit Board is a control board used in Mazak CNC chiller systems, typically handling temperature regulation signals and interfacing with the machine’s PLC. Common failure points for this class of boards include power supply decoupling capacitor degradation, burnt or cracked traces on the 94V‑0 PCB, and failure of integrated voltage regulators that can cause loss of cooling control or erratic temperature readings. Begin troubleshooting by verifying the input voltage and ensuring the board’s power rails are within spec; check for visible signs of component damage such as discoloration or burn marks; then review any error codes logged by the chiller controller for indications of overheating, sensor disconnects, or communication faults.[oss-gpt-20b]