Datamax-O'Neil A-Class Mark II Operator’s Manual - Manual (Page 98)

88 A-Class Mark II
4. Raise the Head Lift Lever then gently slide the Printhead forward. Carefully disconnect both
Printhead Cables, and then remove the Printhead.
5. While carefully protecting the new Printhead, connect both Printhead Cables.
6. Place the Printhead onto the locating pins (on the underside of the Printhead Assembly). (Use
the Alignment Window in the Printhead Assembly to center the edge of the Printhead, as shown
below, and then move the Printhead forward or backward to locate the pins.)
 The drawing illustrates the Alignment
Window of a right hand model printer,
while left hand models are mirrored in
orientation.
Printhead’s
Edge
Printhead
Assembly
Printhead
Alignment
Window
7. Secure the Printhead with the Captive Screw(s), but do not over-tighten.
8. Clean the Printhead using alcohol and allow it to dry; see Section 5.6.1.
9. Reload media, and ribbon (if removed), lower the Head Lift Lever into the locked position. Plug
in and turn ON the printer.
10. Print a Validation Label (see Section 4.3.4) then examine the printed label and, if necessary,
adjust the DARKNESS setting (see PRINT CONTROL / CUSTOM ADJUSTMENTS, Section 4.2.2) to
match the previously produced print contrast.

A replacement printhead does not typically require alignment; however, if print quality
has changed, see Section 5.3.2.