Refer to the video tutorial for cleaning the Printer Head:
4.2 Wait 2-3 minutes for the components to dry, close the cover, place the paper, and turn the label printer on.
4.3 Press the Feed Button (on the top of the Printer Cover) to check if the labels can be fed correctly.
1. Try printing the test page manually and take a picture to us.
Hold the Feed Button until the blue light flashes once, then release it.
3. The Printer serial number starting with Q.