The marking effect of a laser marking machine is achieved by evaporating the surface material to reveal the underlying layer, thereby creating exquisite patterns, text, or trademarks. There are many types of laser marking machines, each requiring careful attention to power supply maintenance during operation. So, what should you do if the power supply encounters issues? Below, we will explain the solutions.

1. Before repairing the laser marking machine's power supply, check whether the power supply casing is properly grounded;

2. Measure whether there is a voltage difference between the laser marking machine's power supply box casing and the operating table or workbench;

3. The aviation plug for power input must not be inserted incorrectly (older power supplies or main control boxes may have identical-looking aviation plugs with different functions; incorrect insertion may cause damage to the internal control board or explosion of internal components);

Fourth, there are multiple high-voltage areas inside the box. After power is applied, hands must not touch the metal parts of the components;

Fifth, the test leads of measuring instruments (such as multimeters, oscilloscopes, etc.) and tools (such as wire cutters, etc.) should be checked for intact insulation; Sixth, when measuring voltage, ensure the setting is on the voltage range. Confirm that the range of the instrument should be greater than the voltage at the test point;

7. Before powering on, check whether the load is connected (for certain models, such as semiconductor laser marking machines 20A, YAG30A, etc.) or if the polarity is correct;

8. Before replacing components inside the power supply box, turn off the laser marking equipment's power and completely discharge the energy storage capacitor's positive and negative terminals (using a 100Ω 50W power resistor). Confirm there is no voltage using the voltage setting before proceeding with the next steps of replacement or repair.

9. When replacing components inside the power supply box or main control box, make a mark to ensure correct wiring during replacement. Pay special attention to polarized components or high-current, high-power devices. Otherwise, the components may be directly damaged, and in severe cases, an explosion could occur;

10. After replacing components and before powering on, measure the related components to check for any short circuits (such as rectifier bridges, IGBT tubes, power input/output sections, power device input/output, etc.).

The above is an introduction to the common knowledge of laser marking machine power supply maintenance. Finally, it is recommended to pay attention to the maintenance of the laser marking machine during operation to better achieve the desired performance and extend its service life.