1、the power control line and the positive and negative links are correct;

2、 if the appearance of no damage, the color of the partial discharge of blue or purple partial leakage of gas, high pressure discharge when the high pressure discharge sound leakage;

3、when the high-pressure end shooting bright white spots or discharge wavy discharge line can determine the high-voltage breakdown, check the water cooling is normal, the operating voltage is high, the laser power is matched;

4、check whether there is damage to the inner pipe, damaged severely, and a lot of debris, this phenomenon is caused by water cooling.