3.2 Troubleshooting
Power Problems
Power does not turn on when using battery power
z The remaining battery power may be too low to run your device. Replace
the batteries with the new ones. Then, turn on your device.
Screen Problems
Screen is off
If the screen does not respond even after you press the power button, try the
following in order until the problem is solved:
z Replace the batteries with the new ones, or connect your device to external
AC power.
z Reset your system.
Screen responds slowly
z Make sure that your device is not running out of battery power. If the
problem still exists, reset your system.
Screen freezes
z Reset your system.
Screen is hard to read
z Make sure that the backlight of the display is on and if necessary adjust the
brightness.
GPS Problems
When there are no valid signals available, consider the following:
z Make sure that the device is facing a clear view of the sky.
z Note that the GPS reception can be affected by:
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