1. Whether the focus length of the device changes: readjust the focus length.

2. Whether the focusing lens is polluted: Clean the focusing lens.

3. Whether the light path is offset: carefully adjust the light path.

4. Whether the reflector is polluted or damaged: Clean or replace the reflector.

5. Whether the cooling water circulates: dredge the cooling water circuit.

6. Check whether the cooling water quality or temperature is normal: replace the clean cooling water to make its temperature reach the normal value.

7. Whether the laser power supply of the laser cutting machine is energized: check the power supply circuit of the laser power supply to make it normal.

8. Whether the laser tube is damaged or aged: replace the laser tube.

9. Whether the laser power supply is damaged: replace the laser power supply.

10. Whether the temperature of the whole machine is too high:

(1) Shut down the machine to lower the temperature;

(2) Ventilation enhances machine heat dissipation;

(3) Adjust the ambient temperature.