ENGLISH 29OTHER EXTERNAL COMPONENTSOTHER EXTERNAL COMPONENTSUsing the external navigationunit (Only for DDX4015DAB/DDX4015BT/DDX3015)You can connect a navigation unit (KNA-G620T :optional accessory) to the NAV input terminal so thatyou can view the navigation screen. (Page 52 )• The navigation guidance comes out of the frontspeakers even when you listen to an audio source.R Viewing the navigation screenOn the <TOP MENU> screen:• While the navigation screen is displayed, the touchpanel operations are available only for navigation.• The aspect ratio of the navigation screen is fixedto ULL> regardless of the <Aspect> setting(Page 40).To exit the navigation screenR Settings for the navigation unit1 Display the <Input> setting screen.On the <TOP MENU> screen:2 Display the <Navigation> screen.3* Select which front speakersare used for the navigationguidance.* Adjust the volume of thenavigation guidance. (0 to 35)<NAV Setup> Press [Enter] to displaythe setup screen for thenavigation unit. See theinstruction manual suppliedfor the navigation unit.* When an item is grayed out, you cannot change the setting.To change the settings, select [Unlock] on the <SETUPMemory> screen. (Page 43)