The device prompts an "abnormal laser power" alarm. How to troubleshoot it step by step?

This alarm may involve power supply, cooling or hardware failure:

Check the power supply system:

Use a multimeter to measure whether the laser input voltage is stable (220V±5%) and the ground resistance is <4Ω.

Check whether the power cord connector is oxidized or loose, and re-plug the high-voltage connector.

Cooling system detection:

Confirm that the water temperature of the chiller is ≤25℃ (high temperature will trigger protection), clean the water tank filter and replace the coolant (recommended once a month).

Check whether the water flow is >4L/min and whether the pipeline is blocked.

Laser internal fault:

If the above is normal and the alarm still occurs, it may be that the laser pump source is damaged or the crystal is aged. Contact the manufacturer to use a power meter to detect whether the output energy meets the standard.

Emergency treatment: Shut down immediately to avoid repeated restarts that may cause the module to burn out.