204 10056272-AA
Cleaning the Printhead
The printhead should be cleaned at regular intervals. These depend on machine use,
operating environment, and choice of thermal ribbon.
1
Turn off the power to the controller and remove the ribbon cassette.
Allow the printhead to cool to normal room temperature before proceeding in order to pre-
vent the possibility of thermal shock damage.
2
Use a cotton swab or a soft cloth soaked
in Isopropanol solvent to remove any
residue from the printhead. Take care
not to use excessive amounts of solvent.
The print line is located on the bevelled edge
of the printhead.
Use great care not to damage the printhead during cleaning. UNDER NO
CIRCUMSTANCES should abrasive materials, or tools such as screwdrivers,
be used for cleaning the printhead.
Replace the ribbon cassette and check the print quality. If the overall quality
is poor, or some of the dots are not printing, the printhead may need to be
adjusted or changed.
Maintenance
for parts & service call QLC (800) 837-1309
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