The entire handheld laser welding machine cannot be powered on？

Fault Description and Solution Measures for Handheld Fiber Laser Welding Machine：

1. If Handheld Fiber Laser Welding Machine cannot be powered on, it is necessary to check whether the power supply line of the machine is normal, check whether the air switch, emergency stop, and power button are pressed.

2. Check if the self-locking relay is working properly. If it is damaged, you can replace it yourself or apply for after-sales service.