z140bh question

[HowieHoward]

Let me 1st say that i'm completely a newbie to this deck. I just bought this used and when it powers on i get the splash screen followed by a disclaimer to push "OK" I do that then the sceren goes directly into GPS view and no buttons respond. I can push "OFF" on the screen and I get to a screen that shows "AV" "Tuner" "OFF" and "AUDIO" on the left but I can never get to the Home screen or any settings at all..no matter if you press Home or Mode only the "Monitor Settings" thing pops up that will let you open the display to load a disc but i can not get into or see any other options. I want to also say that I have this on a test bench with nothing connected except power and ground and have read as far as to see that it already has the parking brake bypass done which moved the yellow mute wire up to the top slot and that is connected to the lime green parking break wire and both to ground. Just wanted to test this out before installing and in case its a dud. Any thing I'm doing wrong ? I can never get to the home screen