1. First turn off the high voltage of the fiber laser, let the machine tool return to the origin, and then turn off the control system as required. After the control system is shut down, turn off the power supply of the control system and turn off the main power switch of the machine tool. 2. Turn off the chiller power. 3. Turn off the cold dryer and all air control valves. 4. If there is an air compressor, turn off the power of the air compressor. 5. Turn off the key switch of the fiber laser,...