VIETA CDV7500GP Owner's Manual page 71

Navigation Operation
When in AV IN Mode, end user can tab on the touch screen,
to bring up the menu, and then press on the
ON THE TOUCH SCREEN to get into the GPS
NAVIGATION MODE.
End user can press the MODE button repeatedly, until the "
MAIN MENU" appear on the screen, then press the mode
button
Or end user when in any mode, short pressing the " GPS
MODE / TA" button on the front panel, to get into the GPS
NAVIGATION MODE.
3) Unit should start to load the GPS NAVIGATION SOFTWARE
(If the GPS NAVIGATION has not been activated before, or
the GPS NAVIGATION is not in used),and the " ATTENTION"
SCREEN should appear. Sometimes the loading of the GPS
NAVIGATION SOFTWARE may take a while, but this is
normal. End user should read the " ATTENTION " CONTENT
CAREFULLY before pressing the " ACCEPT " button.
NAVI
to get into the GPS NAVIGATION MODE.
GPS
Main Menu
GPS
Tuner
NAVI
VOICE
Media
Player
AV-In
Setting
BR - 71
NAVI
button