Hi, I just got a used 110. My first AVIC.
The unit seems to work fine except the MODE and HOME buttons don't do anything?
I got the service manual and followed the schematic to test the actual keyboard and find that mode, home, and voice buttons all output on KEY0 of the keyboard connector. I tested those buttons with an ohm meter and they register the correct values out to the touch screen board with the ribbon connected, so I know the buttons and the ribbon are okay (mode=0, voice=1.2k, home=3.6k). So now I wonder why they don't work? I haven't fully tested the voice button since I