I had to take the drive apart as I was getting CD error continually.
Only 1 fiddly bit to get the final cover piece off (needs to be folded off because of a stuck on cable).
I find it easier to take the whole CD changer & Navi unit chassis off - just be careful not to drop the top bolt under the carpets

Then the side screws are easier.
Use IPA & a camera blower brush.