Avery Dennison Monarch 9825 Operator's Handbook Manual page 88

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 Operato r's Handbook