I may need to remove/replace the Nav Drive on mine. Doesn't seem to be working anymore. I thought it was the screen (black), but I've tried two replacements and nothing. So now I suspect it's the Nav DVD drive that is bad.
So I have to remove the seat to get the drive out?
After all the work I went to sending my Nav screen to Alpine and getting it back (apparently unfixable due to water damage), and buying a used screen and used DVD Nav unit, the fix was something simpler.
I unplugged and plugged back in all the connectors to the DVD drive, and now the original screen works. I think that after 10 years, probably some corrosion made the contacts not so great. The action of removing and plugging the plugs back in probably scraped enough off to make things work again.
Now I have a working Nav Screen and DVD drive to sell since I don't need them