A co-worker of my just gave me an old head unit he bought on ebay a few years back. There are no identifying marks on it except for what i would think is a model number (PD-LN-77). I have tried googling it with no luck. It is a Single DIN CD/DVD player with a fold out TFT screen. I'm hoping to find a manual because I can't figure out how to get into the settings to adjust the clock, dimmer, etc... Any help would be much appreciated. I'll try to get a picture posted up if the model number doesn't help.