: Many Android units like Davilon have the built-in instructions directly on the screen. Look for an app named "Instructions," "Help," or "Manual" in the main menu [14].
A "verified" handleiding is most valuable when things go wrong. When the screen freezes or settings become a labyrinth, the "Long Story" usually involves the "Factory Data Reset" ritual. Users must navigate to to return the unit to its "out-of-the-box" state.
This is a ground loop. Add a dedicated ground wire from the radio chassis to the car’s metal dashboard frame. Also, ensure the reverse camera’s red trigger wire is connected to the reverse light positive.
Enter the Fader control (Balance/Fader menu). If fading to rear produces no sound, your speaker wires are reversed (Green/Purple polarity). Also check “Factory Settings” > “Amp Type” – set to “External” if you have an amp.