MP3 Player Owner's Guide

System maintenance and user support
54
Storage precautions
• Do not store the device anywhere it may be exposed to
water or in conditions of high humidity.
• When the device is not in use for an extended period of
time, bring it indoors and store it in some location with a
temperature range of -20° to +70°C (-40° to 140°F) .
•
Cleaning the NAV 350
• Use a damp soft dry cloth to wipe the device’s casing (not
the display screen). Never use organic solvents such as
benzene or paint thinner to clean the device. Use of these
solvents can cause deformation or discoloration.
• Use a soft, clean, lint-free cloth to clean the display screen.
Moistened LCD screen wipes could also be used as
required.
Troubleshooting the NAV 350
Recalibrating the screen
If while using the device, you discover tapping an item doesn’t bring up the
appropriate response, it means your device has lost its calibration.
Recalibrate the screen.