To select one of these modes, press the button to theright of the screen with the dot on it that corresponds tothe prompt. An X will appear in the box next to it toshow it has been selected.You can select day or night mode regardless of thelighting conditions.In addition the contrast and brightness may be adjustedas desired.To adjust contrast or brightness press the multi-functionbutton that corresponds to the prompt at the right ofthe screen. Brightness is only available when dimmingis active. It is not available when Auto is selectedand it is daytime or when Day is selected. Turn theTUNE/SEL knob to increase or decrease the contrast orbrightness. The bar graph on the screen will reflectthe turning of the TUNE/SEL knob.Press the Back button to return to the main Setupscreen.Voice VolumeThis menu item allows you to turn on and off navigationvoice prompts and to adjust the volume level of allthe voice prompts you receive from the system. To learnhow to adjust the voice volume, see “Interrupt Volume”underNavigation Audio System on page 3-2.ClockTo set the time on the radio clock, do the following:1. Press the MAIN button located to the lower left ofthe display to access the system’s Main Menu.2. Press the multi-function button next to the Setupprompt to access the Setup menu.3. Once the Setup menu is displayed, press themulti-function button next to the Clock prompt.See the information following this list for adescription of Clock menu items.4. Set the time using one of the menu items listed.Hr (Hour) +/−: Press the multi-function button next toHr+ or Hr− to manually advance or reverse the hour onthe clock.Min (Minute) +/−: Press the multi-function button nextto Min+ or Min− to manually advance or reverse theminutes on the clock.Auto GPS (Global Positioning System) Update: Thismenu item allows you to use the Navigation System’sGPS to set the time automatically. The system acquiresthe information from the satellite used for the navigationsystem.1-16