1. Out of ink or ink cartridge failure. During the printing process, the ink in the ink cartridge will be gradually consumed. Once the ink runs out, the printer will stop working and light up red and yellow lights. If your printer uses color ink cartridges, the printer will stop working even if one of the colors runs out of ink.
2. The printer is stuck. Paper jam may be caused by using expired paper, uneven paper cutting, too many stacked papers or paper jam in the printer itself. If there is a paper jam in the printer, the red and yellow indicators will also light up.
3. The print head is faulty. Print head, like ink cartridge, is a kind of wearing parts. Once the print head is damaged, the printing quality will decrease or even stop working, and the red and yellow lights will light up.
4. Printer connection problem. If there is a problem with the connection between the printer and the computer or the cable is damaged, the printer will not work normally and the red and yellow lights will light up.
This printer needs maintenance. If the printer is not maintained or cleaned for a long time, it may also lead to some problems, such as motor life exhaustion, rust, dust or dirt. These problems will cause the printer to malfunction and light up red and yellow lights.
In short, when the red and yellow lights in your printer are on, you should first check your ink supply to ensure that no ink is lost or the ink head is in good condition; Check the position of the paper to ensure that the paper is put in accurately and avoid paper jam. In addition, it is suggested to maintain and clean the printer regularly, such as replacing the print head regularly, cleaning the ink cartridge and printing pad, cleaning the dust in the printer, etc., to ensure that the printer can maintain normal operation at work. If these methods can't solve the problem, there may be serious faults or hardware equipment problems. It is recommended to seek professional technical support and services.