Chapter 4 Troubleshooting and Preventive Maintenance
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Preventive maintenance
See the user’s guide for additional maintenance tasks and to run diagnostic tests
and reports.
Clean the unit
Use glass cleaner and a soft, lint-free cloth to clean the unit.
Note: Do not spray the cleaner directly on or inside the unit. Spray the cleaner on
the cloth.
Clean the touchscreen
To clean the touchscreen surface, press the Menu key on the front of the device
(bottom left), and tap Clean Touchscreen. The system disables the touchscreen for
30 seconds, so that you can clean its surface without inadvertently performing a
transaction. The system counts down the number of seconds that the touchscreen
remains disabled.
Spray glass cleaner on the soft, lint-free cloth and wipe the screen.
After you finish cleaning the touchscreen, wait until the remaining time elapses,
or press the Home key on the front of the device (bottom right) to exit.
Clean the case
Spray the glass cleaner on the soft, lint-free cloth and wipe the top, bottom, and
sides of the case. Do not spray the cleaner directly on or inside the case or directly
on the finger scan plate (if that option is installed), speaker, or microphone.
Do not use steel wool or any other abrasives, or solvents such as alcohol, benzene,
or acetone, as they can damage the unit.
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