Datamax W-Class Maintenance Manual page 35

 Turn 'Off' and unplug the printer. Open the cover, unlock the Printhead Latch, and raise the
Printhead Assembly. Using a cotton swab moistened (not soaked) with isopropyl alcohol, gently
clean the entire Printhead surface. Allow the printhead to dry.
Printhead Assembly
Printhead
 Reinstall media and ribbon. Lower the Printhead Assembly and rotate the Printhead Latch to the
locked position. If necessary, adjust the Leveling Cam. Close the cover. Plug in and turn 'On' the
printer. Run a few sample labels and examine them; if streaking is still present, see Section 3.2.3.
Adjustments and Maintenance
2-25
Cotton Swab