Leadtech Printer-Leading Manufacturer in the Coding & Marking Industry since 2011.
Causes of unstable current of laser marking machine
The reason for the failure of the laser marking machine: The main reason is the wrong choice of the laser type, the main board, wiring board, power supply or control line connection, and the cooling water circulation system failure.
Troubleshooting method:
1. In the parameter setting, check whether the laser type is correct. It is the main cause of continuous light emitting failure.
2. Pull the control line of Jiu Rui to see if there is any loose control line. The connection is unreliable.
3. Remove the control line (nine-core wire) from the power supply, and press the laser power button to analyze whether the power supply or the main board is faulty.
4. The burst shot is normal, indicating that the power supply is not faulty.
5. The burst firing is not normal, indicating that there is a problem with the power supply.
6. When the power supply is normal, connect the control line and use a multimeter to measure the switch control pins on the wiring board. When it does not emit light, the normal voltage is above 4 volts and below 3 volts, and the motherboard output is abnormal When the light is on, the voltage of this pin should be below 2 volts, and the output is abnormal if it is higher than 2.5 volts.
7. Check whether the water circulation is normal, whether the water flow is sometimes absent, and whether there is a problem with the water protector.
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