Repair Cases

Repair examples from the lab

Typical fault→analysis→repair→test flows. Illustrative examples that show the process and approach.

This is an illustrative repair flow that shows the process; no real customer/board information is shared.

The drive trips on overcurrent (2310) immediately at start; the fault persists even when tested without a motor.

The drive trips on undervoltage (F30003) under load; noticeable ripple observed on the DC-link voltage.

The drive reports a ground fault (GFF) on start; the fault persists although the motor and cable are healthy.

The servo drive raises an overcurrent alarm when enabled; the axis does not move.

The HMI does not power up or the screen is very dim; touch is unresponsive.

Some channels on a PLC digital input module read no signal; module diagnostics report an input fault.