Jiahongwei Maintenance Anchuan Servo Driver Series: SGDB, SGDM, SGDL, SGDS, SGDV, SGPMS Servo Driver Motor Series. Repairable common faults of YASKAWA Anchuan servo driver: no display, lack of phase, over current, over voltage, under voltage, over heat, over load, grounding, parameter error, no output, module damage, etc. Jiahongwei maintenance service hotline: 0755-28916839, 13640994287 Mr. Xiao