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9．Maintenance
9- 1．Maintenance
Periodically clean the printer to maintain the printing quality and avoid failures. It is recommended
to maintain the printer every 6 months or 1 million lines of printing.
（1）Print head
When cleaning the thermal dot line on the print head, use a cotton swab with alcohol
(ethanol, methanol or Isopropyl alcohol) and wipe off stains and dust.
（2）Platen roller
When cleaning the platen roller, use a dry soft cloth and wipe off the stain with rotating
the roller.
（3）Sensor and peripherals
Clean the stain, dust and paper powder on the paper empty sensor and paper cover
sensor.
・ Prior to maintenance work, be sure to turn OFF the printer.
・ Avoid cleaning the print head immediately because the print head is hot.
Start maintenance work after the thermal head becomes cool.
・ Do not touch the print head with fingers directly. It may cause damage by
electrostatic discharge and contamination.
・ Do not touch the thermal head dot line with bare hands or metal objects.
・ Do not use volatile chemical agents, such as thinner and benzene.
・ Do not get moisture or spill liquids inside of the printer.
・ Turn ON the printer only after alcohol is completely dried.
SK1-21A/31A
Thermal dot line
４９
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