For those of you having the "Please Insert Appropriate Disc" error message, I noticed something interesting that solved the problem for me: higher temperature.
I have owned the AVIC-N3 for a couple of years now, and it started doing the "Appropriate Disc" thing soon after I got it. (It would let me listen to the radio but not any CDs/DVDs or use the Nav. system) Seeing as how my installation was an amateur process at best, I assumed that it was something I had done wrong. After scouring every AVIC-related forum I could find, the only solution seemed to be sending it in for repair. The