When your printer has these problems, it means that you may need to replace the print head.

1) If the print content is disconnected, please wipe the print head. After wiping, the printing effect still does not improve.

2) The printed content may also become lighter, so you need to adjust the high concentration. If there is still no improvement, you need to replace the print head.

3) The print head is used improperly, burned or the ceramic chip falls off.

4) The printed content is blurred, and it is not improved after cleaning with alcohol or board washing water.

5) The last point is also the most important point:

When the printer appears to print blank or print a large area of broken line, you may need to check whether there is a problem with the mainboard, please do not directly replace the print head, because it may burn the new print head. Please contact us first, we have a professional technical team to provide guidance.

Maintenance suggestions:

Wipe the print head and rubber roller with anhydrous alcohol and dust-free cloth.