In modern industrial automation production lines, industrial servo systems play a core role in precise motion control and positioning. Whether in robotics, CNC machines, or automated assembly lines, the stable operation of servo motors directly affects production efficiency and equipment lifespan. However, during long-term operation, servo systems inevitably encounter various faults. If not properly handled, these issues can cause production downtime, equipment damage, and high maintenance costs. This article summarizes practical troubleshooting and optimization methods for servo systems, based on real engineering experience, providing actionable guidance for industrial automation engineers.