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App. 8
TM-T90
Specification
(STANDARD)
APPENDIX D: PRINT HEAD CLEANING
Paper dust on the heating elements may lower the print quality. In this case, clean the print
head as follows:
1) Open the printer cover.
2) Clean the thermal elements of the print head using a cotton swab moistened with an alcohol
solvent (ethanol, methanol, IPA).
NOTES:
•
Do not touch the print head thermal elements.
•
Do not scratch the print head.
3) Insert roll paper and close the print head.
NOTE: The print head becomes very hot just after printing and is very dangerous. Be sure
to allow the print head to cool down (after printing) before cleaning it. Also, be sure
to turn off the printer power before cleaning the print head and turn on after the
alcohol salvent is dried out completely.
Figure D.1 Print Head Thermal Elements
(*) Depending on the roll paper used, paper dust may stick to the platen roller and roll paper
end sensor. To remove the paper dust, clean the platen roller and roll paper end sensor
with a cotton swab moistened with water.
Also, be sure to turn on the printer power after water is dried out completely.