Replace the Platen Roller
If the printer platen roller gets damaged or wears out, it is easy to replace. On the PM43 printer, you can store a spare platen roller in the holder located under the media holder. Just insert the platen roller as you would into the printer and then turn the latch counterclockwise to secure it to the printer base.
1 Turn the printer off and disconnect the printer from power.
2 Open the media cover.
3 Remove the media.
4 Turn the printhead lift lever counterclockwise to raise the printhead.
5 Rotate the platen roller latch clockwise to detach it from the printer and pull the platen roller away from the printer.

6 Insert the new platen roller into the printer and secure it by turning the latch counterclockwise.
7 Reload media and turn the printhead lift lever clockwise to lower it.
8 Close the media cover, reconnect power, and turn on the printer