MacBook Air 13" Early 2014 Left Speaker Replacement

Use a P5 Pentalobe driver to remove ten screws securing the lower case, of the following lengths:

Two 9 mm screws

Eight 2.6 mm screws

Wedge your fingers between the display and the lower case and pull upward to pop the lower case off the Air.

Remove the lower case and set it aside.

Grab the clear plastic pull tab attached to the battery connector and pull it toward the front edge of the Air to disconnect the battery from the logic board.

Remove the following five screws securing the battery to the upper case:

Three 6.3 mm T5 Torx screws

Two 2.4 mm T5 Torx screws

Lift the battery from its edge nearest the logic board and remove it from the upper case.

Charge it to 100%, and then keep charging it for at least 2 more hours. Then, unplug and use it normally to drain the battery. When you see the low battery warning, save your work, and keep your laptop on until it goes to sleep due to low battery. Wait at least 5 hours, then charge your laptop uninterrupted to 100%.

If you notice any unusual behavior or problems after installing your new battery, you may need to reset your MacBook's SMC.

Use the flat end of a spudger to pry the left speaker cable connector up and out of its socket on the I/O board.

Use the flat end of a spudger to pry the left speaker off the adhesive securing it to the upper case.

Remove the left speaker from the upper case.