Intermec PB50 User Manual page 28

Chapter 1 — Using the Mobile Printer
16
7 Press down on the self-strip door to make sure the media cover is
completely latched.
Note: The PB51 does not have a self-strip door. Instead,
the self-strip door is molded plastic and part of the media cover.
8 Press and hold the Feed button for more than two seconds to
calibrate the media.
PB50 and PB51 Mobile Printer User Guide