Infranor 01600A is a control board used in industrial servo drive and motion‑control systems, typically providing signal conditioning, power regulation, and communication interfaces for motor drives. Common failure modes on this class of boards include burnt or tripped protection diodes, degraded electrolytic capacitors, shorted I/O lines, and corrupted firmware stored in flash memory. Begin diagnostics by verifying the main supply rails (±15 V, +5 V) with a multimeter, checking for correct voltage levels and ripple; inspect the board visually for burn marks or loose connectors, then use an oscilloscope to confirm clean signal waveforms on key I/O pins before proceeding to firmware re‑flash if necessary.[oss-gpt-20b]