1、 Poor printing quality

　　1. It may be an issue with the ink cartridge. Check if the ink cartridge is used up or damaged.

　　2. The print head is not thoroughly cleaned, it is recommended to use a professional cleaning solution for cleaning.

　　3. The problem with printing paper, if it is poor quality or expired, will affect the printing quality.

　　2、 Unable to connect

　　1. Check if the connected wires are loose, reinserting the wires may solve the problem.

　　2. Check if the wireless network is connected correctly and try reconnecting to the wireless network.

　　3、 Paper jam

　　1. Check if the printing paper is properly placed. Improper placement of the printing paper may cause the paper to jam.

　　2. Reloading the printing paper may be due to the previous placement not being standardized enough.

　　4、 Unable to connect power

　　1. Check if the power cord is connected properly and reinsert and unplug the power cord.

　　2. Is the battery low? Try charging or replacing the battery.

　　5、 Fault code prompt

　　1. Check the operation manual of the printer. If a fault code is prompted, you can use the manual to identify the cause of the fault and solve the problem.

　　2. Contact the manufacturer's service center.

Read recommendations:

Introduction to the principles of handheld printers

Portable printer positioning error