If printing is not possible because the print head is worn or damaged, replace it according to the following procedure:
You can also check the procedure in the video.
When replacing the print head, make sure that the product is powered off, and disconnect the power cord from the outlet.
- Press the head lock lever backward, then open the head assembly.
- Press the lever to the left to unlock the print head.
- Take out the print head.
- Remove the connectors from the print head.
- Insert the connectors on the product into the new print head connectors until they "click" into place.
- Insert the print head along the left and right guides all the way in.
- Press the print head in until it "clicks" and locks into place.