Step 16
There should be no cables connected to the top of the logic board at this point.
Remove the following 12 Phillips screws from the logic board:
Six 4 mm around the edges of the logic board.
Two 5 mm securing the right speaker to the logic board (move the speaker off of the logic board).
Three 6 mm with wavy washers in the upper, left corner of the logic board.
One 4 mm underneath a black bumper in the back right corner of the logic board.
One 4 mm screw may not be present on some logic boards.
Step 17
Two cables still connect to the logic board and must be removed before pulling the board entirely out of the computer.
Use a spudger to gently (very gently) pry up the left side of the logic board.
Step 18
Disconnect the DC-In connector from the left side of the logic board.