Acu‑Rite 2001003 is a dual‑axis digital readout (DRO) and operator interface panel used on CNC milling and drilling machines. Common failures include loss of signal from the encoder cable, drift or noise in the position display due to aging capacitors or loose connections, and power supply issues such as undervoltage at the 115/230 VAC input or faulty transformers. First‑check diagnostics: verify the main power supply voltage and continuity on the input terminals; inspect all encoder cables for breaks or corrosion and test signal integrity with a multimeter or oscilloscope; review any error codes displayed on the panel and cross‑reference them with the DRO 200M manual for specific fault indications.[oss-gpt-20b]