Paxar Monarch HandiPrint 6017 Operating Instructions Manual page 22

Problem
Light/heavy
printing or voids in
printing.
5-2 Troubleshooting
Action
Clean the printhead.
Check or recharge the battery.
See "Charging the Battery" in
Chapter 1 for more information.
Your System Administrator may
need to adjust the print contrast.
Your handheld's application may
include a print contrast
adjustment. Refer to the
Programmer's Manual for more
information.