Traduciendo paso 5
To remove the mother board undo the Torx T10 screws shown in the yellow circles. (There's one behind a cable bottom right)
Hopefully I've circled them all. (undo any screw on the mother board that has a white circle printed on the board.)
Oh, you'll also have to yank out the infra-red sensor behind the Apple logo. Just pull up. It's spring loaded in there...