Did you remove the front bezel? Don't worry, I was confused too when I first got my 4000T. You can pry it off in the same sort of way you'd remove a DIP-socketed chip. There are six metal tabs holding it in place, so I use a dull kitchen knife to get between the metal and the plastic and then turn it left and right to slowly pop the clips out. Do this near every clip and the bezel will come right off. I'm always worried I'll snap the door hinges when reattaching it, so be very careful and don't force it.
