QLS-4100 Xe 7-5
Printhead Replacement
After normal use or as a result of a failure, the printheads will eventually
need to be replaced.
Some symptoms of printhead failure include:
• Significant reduction in printed image darkness that cannot be corrected
by using an increased print intensity.
• Vertical line(s) of missing print running through the entire length of the
label.
• A wide vertical area of missing print indicating physical wear to the
printhead or an electrical failure.
The following procedure explains how to remove and replace a printhead.
Caution: Printheads can be damaged by static electricity. Always use
standard anti-static procedures when replacing printheads.
1 While the printer is on, lift the printhead that will be changed. The
following message will display.
Press the SELECT button. The indicated print station will be disabled
and the following message will display.
2 Turn the printer off and unplug the AC power cord.
3 Remove the black guide roller under the static brush for easier access to
the printhead mounting screw. There are three inline screws on the outer
plate at the end of the guide roller. Remove the two lower screws and
pull on the tab to slide the center shaft out, releasing the guide roller to
drop down.
Head x Disabled
Head x up
SELECT to disable
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