Try www.samsungparts.com and see if there is a service manual. As far as I know this is not considered user serviceable but you could look on YouTube and TECHREPUBLIC.COM for teardowns.
I can't find which exact model you have so here's Bill at it again -> http://www.techrepublic.com/blog/cracking-open/galaxy-tab-2-70-teardown-reveals-efficient-hardware-layout-and-replaceable-battery/575
Hi. I need information on how to change my galaxy tab 2 7.0 p3113 screen. my tab fell and the digitizer shattered before my very eyes a few days ago. I ordered a digitizer online but I havent the slightest clue of how to install, I only see DIY for the tab 2 10.0. can someone please give me some instructions???