I don't know if crevz answer is what you've asking for. But if not, then you should expand your question.
This forum has tear downs, that demonstrate the construction of the iPod: iPod_Original
I've made this post that explains the way the cover of the iPod Classic is opened: http://shadowofcertainty.blogspot.com/20...
Lots of questions has been answered, and you can browse them. Start by clicking on the Solutions tab to the right on thes page.