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4.3 Self-Checking Function
The Self-Checking Function allows the user to identify if the printer is operating
normally. If the printer is detected with failure condition, please contact the
distributor.
(1) Self-checking Procedure:
Make sure the printer is powered off.
Press FEED button and switch on the power supply while the FEED button
still pressed.
The Self-Checking list should be printed when the printer is brought to
power.
(2) Self-Checking function printers out part of character set, command mode,
interface type, printer settings, dip switch settings, etc. sequentially.
(3) The auto-cutter cuts the receipt paper immediately when printing is finished.
(4) The printer automatically goes into data receipt mode after finishing the
self-check printing process.
4.4 Preventive Maintenance
This printer has been developed to have a long life expectancy with no
replacement of components and minimum user interference. But printer
lifetime is highly influenced by the following factors: paper quality, regular
preventive maintenance, environmental conditions and how carefully the user
handles this product.
(1) During normal operation some ink particles from the thermal paper will
adhere to the thermal print head surface. Therefore, it is recommended to
clean the printer head after 10 km of printed length or if printing quality is
degrading. Switch off the printer before cleaning it. Clean the print head with
a cotton swab, soaked with alcohol solvent (ethanol or isopropanol). Do not
clean the print head with hard, abrasive objects or your fingers, since this can
cause damage to its delicate surface. Clean the platen roller (rubber roller)
with the cotton swab to remove any dust particles.
CAUTION!
The print head can be hot just after printing. Do not touch the print head;
let it cool down before touching and cleaning. Because the thermal
elements of the print head and driver IC are fragile, avoid touching them
with any metal objects or any abrasive material.
(2) During normal operation paper particles will build up inside the printer. This
is normal, but dust and paper particles can prevent the sensors from
functioning properly. To avoid that, verify once a year that the sensor surfaces
