Printhead - Datamax ?-class series Maintenance Manual

4.3 Printhead

Removal:
Note: Printheads are fragile; use extreme care when handling and never use a sharp object on the surface. If you
have questions, contact a qualified technician or Datamax Technical Support before proceeding.
1. Turn 'Off' and unplug the printer. Open the cover; if ribbon is installed, remove it. Touch a bare
metal part of the printer's frame to discharge any static electricity that may be present on your body.
2. With the printhead locked in the down position, loosen the Printhead Mounting Screw (it will remain
in the assembly).
3. Unlatch the Printhead Assembly. While holding the Printhead, raise the assembly. Disconnect the two
cables and then remove the old Printhead.
Installation:
1. While carefully holding the new Printhead, connect both cables.
2. Position the Printhead onto the Locating Pins in the Printhead Assembly and secure in place with the
Printhead Mounting Screw (do not over-tighten this screw).
3. Clean the Printhead (see Section 2.1.1).
4. Reload ribbon (if removed), lower the printhead assembly, and rotate the printhead latch back, into
the locked position.
5. Use the Darkness Adjustment to set the print contrast produced by the new printhead to match that of
the old printhead (see Section 2.7).
Removal and Replacement
Printhead
Mounting
Screw
4-9