The IDC B8001 is a 5 A continuous/10 A peak digital brushless servo drive that delivers high‑performance closed‑loop control to permanent‑magnet brushless or brushed motors via step/direction, analog, or RS‑232C interfaces. Common failure points for this class of drives include overheating of the power MOSFETs, degradation of the DSP firmware or logic ICs, and loss of communication on the RS‑232C or I/O lines due to cable insulation breakdown or connector corrosion. Initial diagnostics should verify that the 100–240 VAC input is within spec and stable, check all analog/step/direction signals for proper voltage levels and continuity, and review any fault codes or status LEDs displayed by the drive’s diagnostic port.[oss-gpt-20b]