How did YOu guys fixed your HU? With the message stated above? What option do I have?

Im having this same issue. After cutting it on it say's disk error. Please replace disk with appropriate disk... I press and hold the eject button and it say's mechanism error...

It will also not allow me to insert a regular music cd... Please help.

I purchased this HU used.

I JUst got mine working i took it apart again and flipped the cd rom over and it started updating and reads fine now i also did a eject and reset dont rember if that helped or not but i think its a laser adjustment. it read all types fine before just not the nav disc's so ...