cheers matey, ive googled and come up with same thing, few people are advising not messing with the lens, and also can be hard to get to due to cd mechanism. the disc loads up etc but is very noisy almost sound like something grates then flashes error 11. can it be the loading motor as well that is classed as mechanical failure.
its a good head unit although oldish. pioneer deh p440. got a good set of pre outs on it too. ive just bought it for ÂŁ16 so could stretch to a little bit on a repair.
would it be easier to just get hold of a cd changer for it?
ps spark doctor, i was looking on some other forum about repairing head unit and there was someone with same avatar as you, could it be you!! lol!