The navigation is pretty much inop. How do you fix this? We've tried replacing all the wires and gps antenna and even benched it in another car. Pioneer Service Center in Long Beach, CA sent it back as "Unable to Duplicate"... 3 times. But everytime we try it here or back in the customer's car, it's the same thing.
it means / N = NOT ok / NOK
I think we all know what NOK means. 
What happens when you power it up outside the car's dash? Like on a work bench with an external power source? My initial thought was maybe the dash was at an awkward angle and the gyros tipped off the sensors and powering it up on a flat bench would fix that. IDK.
Its interesting that it says NOK for almost all connections.
Thinking its a faulty unit.