An interposer is the name for an interface that links one electrical connection to another. In this repair, it is the board connecting the battery to logic board.
Lift the Interposer off the logic board and remove it.
Removing this board will ensure that the battery remains disconnected throughout your repair, preventing your computer from accidentally powering on. It's also a good idea to take it out so it doesn't fall out unexpectedly.
Use the flat end of a spudger to pry the right side of the I/O board data cable connector up off its socket on the I/O board.
When prying the I/O board data cable connector from its socket, make sure to pry the connector itself and not the socket. Prying the socket may cause irreversible damage to the I/O board.
Gently push the edges of the display data cable connector away from its socket on the logic board.
It is recommended "walk" the connector out of its socket. Simply push the top and bottom corners of the connector and carefully "walk it out" of its socket.
Pull, but do not remove, the display data cable connector out of its socket and carefully move it out of the way.
Carefully lift the logic board assembly from its left side and work it out of the upper case, minding any cables and the I/O ports that may get caught during removal.
Pull the right I/O port side of the logic board away from the side of the upper case and remove the logic board assembly.
Open the MacBook Pro approximately 110 degrees, and place it sideways on the table, as shown.
While holding the display and upper case together with your left hand, remove the remaining T8 Torx screw from the lower display bracket.
Be sure to hold the display and upper case together with your left hand. Failure to do so may cause the freed display/upper case to fall, potentially damaging each component.
Remove the last remaining T8 Torx screw securing the display to the upper case.
For this step, it is recommended to use a heat gun or hair dryer to soften the adhesive securing the microphone assembly to the upper case. You may be able to remove it without doing so, but will risk damaging the microphone cable.
With the heat gun set to low, heat the microphone assembly to loosen the adhesive attaching it to the upper case.
Be very careful not to overheat the microphones or upper case. Keep in mind that the plastic keyboard is on the other side—too much heat in a single place can melt keys.
Wow, it worked! I am computer literate but have not taken my computer apart in years. Your photos and attention to detail were much appreciated. Any woman can and should attempt to do this herself. Thanks so much for the great tutorial!
If uppercase Assembly(Includes Trackpad, keyboard, Palmrest & BATTERY) is being replaced, there is no need to remove battery from old uppercase assembly.