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Changing system settings
1. Press the SETUP button on the GPS. The screen will display a
menu, as shown below:
2. In the menu, tap one of the five submenus:
o Tap
to adjust brightness. Tap + or - . Use the rotating
dial to make adjusts to brightness or contrast.
o Tap
to adjust the contrast.
o Tap
to set the touch screen sound on or off.
o Tap
to set the FM transmitter frequency.
o Tap
to set the screen aspect ratio. (not available in GPS
mode)
3. Turn the knob to adjust the selected setting. The menu turns off
automatically after several seconds.