Installing MacBook Unibody Model A1278 Mid Wall

Step 1 Access Door

• With the case closed, place the Unibody top-side down on a flat surface.
• Depress the grooved side of the access door release latch enough to grab the free end. Lift the release latch until it is vertical.
Step 2

• The access door should now be raised enough to lift it up and out of the Unibody.
Step 3 Battery
• Be sure the access door release latch is vertical before proceeding.
• Grab the white plastic tab and pull the battery up and out of the Unibody.
Step 4 Lower Case
• Remove the following eight screws securing the lower case to the chassis:
• One 3 mm Phillips screw.
• Three 13.5 mm Phillips screws.
• Four 3.5 mm Phillips screws.
Step 5
• Using both hands, lift and remove the lower case off the upper case.
Step 6 Mid Wall
• Remove the four 10.3 mm Phillips screws securing the mid wall to the upper case.
Step 7
• Lift the mid wall out of the upper case.

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Walter Galan

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