Avery Dennison Monarch 9855 Operator Handbook - Manual (Page 101)

Care & Maintenance 9-5
R e p l a ci n g t h e P ri n t h e ad
You may have to replace the printhead if it is damaged or worn-out. For
example, you may see 616 (bad dot or dots) or 768 (printhead failure) error
codes. See Appendix B, "Accessories & Options" for the printhead part
number.
CAUTION: 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. Clean the printhead to remove any salt
or oil left from handling prior to operation.
To replace the printhead:
1. Turn off the printer.
2. Open the cover.
3. Unlock the printhead by turning the retaining latch.
4. Press forward and down on the two latches on top of the printhead
assembly as shown. The printhead drops down.
5. Lift the printhead assembly using the printhead tab and push back until
the printhead assembly clicks into place.