102 PX4i and PX6i High Performance Printer User Guide
If your printer starts to feed labels in an unexpected way, pull out
the upper guide check for objects, such as dust, adhesive residue, or labels, that
may be blocking the beam of light. If necessary, clean the guides.
To clean the media guides
1. Open the front door and media cover.
2. Pull the upper guide straight out.
Warning: Isopropyl alcohol [(CH 3)2CHOH; CAS 67-63-0] is a highly
flammable, moderately toxic, and mildly irritating substance.