Printer Maintenance
Chapter 10
10-4
428T Operator’s Manual- 880037-0141
Figure 10-4 Internal Cleaning
10.4 Print Head Maintenance
If print quality has not improved after using a thermal cleaning card, or if one is not
available, foam or cotton tipped swabs or a clean lint-free cloth dampened with isopropyl
alcohol may be used. Follow the steps below to clean the print head.
1. Release the Print Head Assembly and rotate to the open position.
2. With a foam or cotton tipped swab or soft, lint-free cloth dampened with isopropyl
alcohol, clean the thermal elements by gently rubbing the swab down the length of
the print head dot row. Allow for the alcohol to evaporate, then repeat if necessary.
3. Reinstall media and run labels to check print quality.
4. If poor print quality persists, print head or other parts may be damaged.
CAUTION: Isopropyl Alcohol or other approved non-Abrasive
solution should be used to clean the drive roller. The use of other
cleaning solvents or materials is not recommended and may
degrade the performance of the drive roller.
Blow dust out with
compressed air or
vacuum with anti-static
vacuum cleaner.
Clean Paper Path with
lint-free cloth or swabs
dampened with isopropyl
alcohol.
Clean Drive Roller with
lint-free cloth or swabs
dampened with isopropyl
alcohol. (Drive Roller
can be rotated by hand.)
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