Fault reasons and solutions:
①The laser output power does not meet the requirements, and the high-power laser needs to be replaced.
②The turn-off power of the acousto-optic switch cannot meet the requirements, and the acousto-optic switch needs to be replaced.
③ The optical path adjustment is not accurate, re-adjust the optical path.
④ The surface of the workpiece is not on the focal plane, adjust the appropriate position.