Many friends often find that the printer cannot be used, but after returning to our hands, everything is normal after testing. Here I will help you solve problems and teach you how to troubleshoot and solve problems.

      First of all, in our factory, there are often situations where the printer suddenly fails to print. After half a day or even a day of investigation, the final problem does not lie with the printer itself. Then when the printer is abnormal, we need to troubleshoot the problem.

      According to experience, the following problems will cause the printer to be abnormal:

      1. The communication line problem, because the terminal of the communication line will be oxidized after many times of plugging and unplugging, resulting in poor contact. At this time, the printer will sometimes print, sometimes not print, sometimes the print content is complete, and sometimes print The content is strange. As long as it can print normally, it means that there is nothing wrong with the printer itself. The problem lies in the communication line. Some friends may say that after we plug in this line, it is not unplugged. It will oxidize, but many friends may not know that after the wire has been used for a long time, there will be problems inside. Looking at the wire itself on the surface, there is no problem. Using a multimeter to test, it is not abnormal, but it is When it connects the printer to the console, it has a problem, but after we use another cable, everything works fine.

      2. Power supply problem. Due to insufficient power supply current, the printer cannot be driven to work, so every time I print, I find that the printer does not work after printing a little bit. After re-powering, send data to print, the printer will print a little bit again. Or the entire bill can be printed completely, but there is compression in the middle. This kind of problem is mostly caused by the problem of the power supply. Replacing with a new power supply with sufficient power will solve this problem.

      Here I suggest that when using the power supply, you must not be greedy for cheap. Use inferior power supplies. The performance of inferior power supplies is unstable, which will cause damage to the printer circuit board and even the print head. At this time, the printer is a waste product and cannot be repaired. up!

      3. The printing is not clear. It may be due to the dirt on the heating plate of the printer, which causes the print head to fail to heat on the thermal paper normally when heating, resulting in unclear printing effect. At this time, the printer needs to be powered off and a clean cotton swab should be used. Or dip a dust-free cloth with some alcohol, wipe the heating sheet of the printer, clean up the dirt, wait for about 20 seconds, power on, and test the printing effect to see if the effect is improved. If the coating is uneven, you can use the original paper provided by the manufacturer for testing. If there is still a problem, it means that the print head is worn out or the print head is burned due to unstable power supply.

      When using the printer, please try to abide by the rules, first plug in the communication line, then plug in the power line, make sure they are all connected correctly, and then turn on the power to ensure that misuse will burn out electronic components!

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