Sinano 010B is an AC servo drive used in industrial motor control systems, typically interfaced with PLCs or motion controllers via analog/digital I/O. Common failure modes for this class of drives include power supply over‑voltage/under‑voltage, capacitor degradation, overheating of the main MOSFET array, and loss of communication with the host controller (missing status flags or error codes). First‑check steps: verify input voltage and ripple on the drive’s 48 VDC rail; inspect all electrolytic capacitors for bulging or leakage; confirm that the motor leads are correctly connected and that the encoder/feedback signals are present and within spec. If errors persist, review the drive’s diagnostic registers for fault codes (e.g., over‑temperature, phase loss) before proceeding to component replacement.[oss-gpt-20b]