The CO2 laser engraving machine uses laser beams to permanently mark the surface of various materials. The role of marking is to expose deep substances through the evaporation of surface substances, or to "carve" traces through the physical changes of surface substances caused by light energy, or to use light energy to burn some substances, thereby showing patterns, characters, etc. that need to be etched. Patterns such as barcodes. The following is the processing method of marking machine failure. Laser engraving machine fault diagnosis, how to deal with leakage? 1. There is an explanation on the laser tube bright voltmeter. 1. The laser power drops, which is very common in the aging of laser tubes. Inspection method: Check the voltage regulator with a multimeter, and check the working voltage of the laser tube with a high voltage meter. Treatment: replace the aging laser tube and damaged parts. 2. The light is abnormal and the light guide joint is hot. The main reason is that the light guide joint is loose and the laser tube is not installed correctly. Test method: homography correction. Treatment: replace or adjust the light guide section, and correct the optical path. Laser engraving machine Second, the laser tube is not bright. 1. The voltmeter shows that the fault is usually caused by the disconnection of the power supply line, poor contact of the foot switch or manual switch. Method: Measure with a multimeter. Treatment method: repair or replace. 2. The laser power drops. This kind of failure is often caused by the aging of laser tubes. Inspection method: Check the voltage regulator with a multimeter, and check the working voltage of the laser tube with a high voltage meter. Treatment: replace the aging laser tube and damaged parts. 3. The fuse keeps blowing. The fault is due to short circuit and serious dirt inside the machine. Method: Check the circuit step by step, most likely because of the short circuit of the high voltage part. Treatment: Repair the short circuit and remove the dirt. Laser engraving machine 4. There is no indication on the voltmeter, and the common fault is that the fuse is broken or the circuit is open. Method: Measure with a multimeter. Solution: Replace the fuse or connect the circuit. 5. There is discharge sound or arc light in the machine, There is discharge sound or arc light in the machine. Dust, accumulated water or high air humidity and corrosive gases are common in the machine. Method: Observe the discharge point in the dark. Treatment: Remove dust, accumulated water, etc. and change the working environment.