Paxar Monarch 9855 RFID Printer - Manual (Page 94)

6. Carefully unplug the cable from the printhead as shown. The
printhead is sensitive to static electricity, which can damage
the printhead or reduce its life. Ground yourself by touching
some metal, such as the printer’s metal base, before touching
the printhead.
7. Carefully plug the cable into the new printhead.
8. Align the new printhead with the tabs.
9. Snap the printhead into place.
Do not
touch here
9-6 Care and Maintenance