Learn the working principle of the inkjet printer and conduct regular training and learning. The basis for quick and better maintenance of the inkjet printer is our knowledge and understanding of the working principle and daily use of the inkjet printer. Inkjet Printer Generally speaking, the problem can be divided into two categories: circuit failure and ink circuit failure. First of all, no matter what model it is, it is necessary to have a certain understanding of the ink circuit diagram of the machine. After learning and understanding the ink circuit diagram, we can then know the position of the filter inside the machine and the direction of ink flow, as well as the nozzles, nozzles, and solenoid valves. Wait for the running sequence. Generally speaking, the operation of the Inkjet Printer circuit is very complicated. Generally, the inkjet printer uses a single-chip microcomputer to control the overall solenoid valve, pressure pump, nozzle crystal oscillator and other component