How to Troubleshoot the Failure of Laser Not Emitting Light?

Laser marking machine is a marking equipment that uses different lasers to irradiate the laser beam on the surface of various materials, and the surface material can undergo physical or chemical changes through light, thereby engraving permanent signs such as patterns, trademarks and words. How to troubleshoot the cause of the failure of the laser marking machine?

Troubleshooting methods for laser marker failure without light

1. Check the power supply

Check whether the power supply wiring of the laser marking machine is correct, whether the +24V and GND are reversed, and whether the ground wire is grounded. Whether the power supply of the laser is normal – the power supply meets the actual power supply requirements under no-load and loaded (connected with the laser) state.

2. Check the marking board

Whether the PIN18 and PIN19 signal are normal. Whether the power supply of the marking card is normal, and whether the signal controlling the laser is normal.

3. Check the emergency switch

Check whether the emergency stop switch (PIN23) of the laser marking machine is normal (when the laser is working, the signal is high level).

4. Check the marking software

Whether the software settings of the laser marking machine are correct. Use the software laser test function to see if a light spot comes out. Use the debugging software to test the laser and observe the parameters.

5. Check the DB25 signal

Check whether the indicator light signal is at a low level in the marking state. If the laser marking machine is in the marking state, the guiding light signal is low level (PIN22 pin is “0” level), if the guiding light signal is high level (“1” level), the laser is the priority output guide light. Check whether the wiring of the DB25-pin serial port of the laser marking machine is correctly wired according to the wiring definition.

6. Check the red light signal

If the red light signal is high level, the red light output will be given priority. (If it is a built-in red light laser, you can judge whether the laser light path is normal by detecting whether there is red light output).

7. Check the isolator

Confirm whether the light spot of the isolator is normal (the light spot is round and there is no dark spot).

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