Microcom 814M Operators Manual - Manual (Page 33)

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5 Routine Maintenance
Caution:
− Make sure that the power is turned off before starting routine maintenance.
− Do not touch the printhead, platen roller, or sensors with sharp objects they may scratch.
− Do not clean any components of the printer with strong solvents such as gasoline, acetone,
etc.
− Use only isopropyl alcohol or other Microcom Corporation approved cleaners on the print
head.
− Be sure to do follow a monthly maintenance routine (more, if printer use is severe).
5.1 Cleaning Print head
The print head should be cleaned whenever the following circumstances occur:
•
Print is not clear.
•
Some columns are missing or are not clear.
•
Paper feed is not smooth through the print head / platen roller area.
To clean the print head, follow the steps below:
•
Turn off the power and open the upper cover.
•
Lift the print head module and allow the print head to cool down if it has recently printed.
•
Wipe off the surface of the print head with a soft cotton cloth dampened with isopropyl alcohol.
•
Allow isopropyl alcohol to evaporate and press print head module and close upper cover.
5.2 Cleaning sensors
5.2.1 Cleaning paper end sensor
The paper end sensor should be cleaned whenever the following circumstances occur:
•
Printing stops and falsely signals paper end when there is still paper in the printer.
•
The printer does not signal paper end when paper runs out during printing.
•
The printer skips or incorrectly reads registration marks.