1, the focus lens is pollution: clean focus lens.
2, laser cutting machine focus Focal length changes: re-adjust the focal length.
3, whether the optical path offset: carefully adjust the optical path.
4, the reflective lens is contaminated or damaged: clean or replace the reflective lens.
5, whether the cooling water circulation: dredge cooling water.
6, cooling water or water temperature is normal: replace the cooling water to the normal temperature of the cooling water.
7, the laser power is energized: Check the laser power supply circuit to make it normal.
8, the laser tube is damaged or aging: replace the laser tube.
9, the laser power is damaged: replace the laser power.
10, the machine temperature is too high: 1. Shut down so that the temperature down; 2. Ventilation to enhance the machine cooling; 3. Adjust the ambient temperature.