– 46 –
9. Maintenance
Printed characters may become partially unclear due to accumulated paper dust and dirt.
To prevent such a problem, perform periodic maintenance, such as removing the paper dust in
the paper transport section and on the surface of the thermal head.
CAUTION
Turn the printer’s power switch OFF before performing maintenance.
9-1. Thermal Printer
Cleaning is recommended to be carried out once every six months or one million lines for gen-
eral thermal paper and once every month or 200,000 lines for label paper.
9-1-1. Cleaning the Thermal Head
To remove the dark paper dust that has accumulated on the thermal head surface, wipe it clean
with cotton swab (or soft cloth) dipped in alcohol (ethanol or methanol, or alcohol).
1) The thermal head is easily damaged, so clean it with a soft cloth, taking care not to
scratch it.
2) Do not attempt to clean the thermal head immediately after printing, when the thermal
head is
HOT
.
3) Beware of the risk of damaging the thermal head as a result of static electricity that
may be created during cleaning.
4) Turn the power ON only after the alcohol has dried completely.
9-1-2. Cleaning the Platen Rubber Roller
Use a dry, soft cloth to wipe off the dust that may have accumulated on the rubber roller.
Rotate the platen to clean the entire surface.
POWER
ERROR
PAPER
OUT
SLIP
FEED
RELEASE
POWE
R ERR
OR
PAPEROUT
SLIP
FEED
RELEA
SE
Thermal head
Rubber roller
CAUTION