1. Focus Lens for contamination: Clean focusing mirror.
2. Focus relief laser engraving machine equipment whether changes: re-adjust the focus.
3. Light path is offset: careful adjustment of the optical path. .
4. Reflective lens is contaminated or damaged: Clean or replace the reflective lenses.
5. Laser power is energized: Checking laser power supply circuit so that it is normal.
6. Laser tube is damaged or aging: Replace the laser tube.
7. Laser power supply is damaged: Replace the laser power.
8. Cooling water is circulating flow: clear cool water.
9. The cooling water temperature is normal or not: Replace the clean cooling water to the temperature to normal.
What I tell you about the laser weaker of laser engraving machine? we have to know how the above problems to be fixed, and welcome to our online support with laser engraving machine.