Mitutoyo 529 is a linear scale detector used in precision measurement and machining equipment, typically interfacing with a Digital Readout (DRO) system to provide axial displacement data. Common failure points for this class of detectors include power supply instability, signal line degradation or connector corrosion, and internal board component fatigue such as op‑amp drift or capacitor leakage. Initial troubleshooting should verify the 24 V DC input voltage and check for proper ground reference; inspect all cable connectors for tightness and signs of wear; then review any error codes displayed on the DRO panel or log files for indications of signal loss or over‑temperature conditions.[oss-gpt-20b]