1. The voltmeter has electricity The fault is common in the power supply line has open and foot switch or manual switch contact is poor, inspection method: use a multimeter to measure, treatment method: repair or replacement.
2. The voltmeter is not powered The fault common fuse is broken, or the power supply is not turned on, inspection method: measure with a multimeter, treatment method: replace the fuse, or turn on the electricity.
3. The power lamp is not on, the power lamp is not lit This fault is common in the fuse broken, poor contact of the incoming line, poor lamp line or broken lamp, inspection laser marking machine inspection method: check the fuse, check the laser marking machine power intake, check the lamp, treatment method: replace the fuse, repair the wire and replace the lamp.
4. Continuous burning fuse, for continuous burning fuse, we analyze that the fault is due to a short circuit inside the laser marking machine or serious dirt in the machine, inspection method: step by step line inspection, mostly high-voltage part has a short circuit, treatment method: repair short circuit, remove dirt.
5. There is discharge sound or arc light in the laser marking machine, there is discharge sound or arc light in the laser marking machine, there is dust in the fiber laser marking machine, stagnant water or air humidity is too large and corrosive gas, inspection method: observe the discharge point in the dark, treatment method: remove dust, stagnant water and other things, replace the work.