Kenwood DNX5120 DVD Navigation System GPS Receiver "pre set stations" Questions

...pre-set ones that were on the radio from the former owner? Its a lil Play button at da bottom of screen wen on tuner! tap it until it say p1 p2 p3 etc, turn to wat station you want and hold either p1 ...

...set so low that you can barely see it (or not at all in bright sunlight). If it wasn't working at all then you wouldn't be able to see anything. When the unit is on, press the power/lighting button ...