Введение
Follow this guide to replace the lower case on a 2019 Touch Bar MacBook Pro with four Thunderbolt ports.
For your safety, discharge your battery below 25% before disassembling your MacBook Pro. This reduces the risk of a dangerous thermal event if the battery is accidentally damaged during the repair. If your battery is swollen, take appropriate precautions.
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Power on your Mac and launch Terminal.
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Copy and paste the following command (or type it exactly) into Terminal:
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sudo nvram AutoBoot=%00
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Press [return]. If prompted, enter your administrator password and press [return] again. Note: Your return key may also be labeled ⏎ or "enter."
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sudo nvram AutoBoot=%03
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Инструмент, используемый на этом этапе:Magnetic Project Mat$19.95
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Use a P5 Pentalobe driver to remove the six screws securing the lower case:
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Two 6.2 mm screws
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Four 3.4 mm screws
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Apply a suction handle to the lower case near the front-center area of the MacBook Pro.
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Lift the suction handle to create a slight gap between the lower case and the chassis.
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Insert one corner of an opening pick into the space between the lower case and the chassis.
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Slide the opening pick around the nearest corner and halfway up the side of the case.
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Repeat the previous step on the opposite side, sliding your opening pick under the lower case and up the side to pop the second clip free.
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Insert your opening pick once again under the front edge of the lower case, near one of the two centermost screw holes.
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Give the pick a firm twist to pop free the third clip securing the lower case to the chassis.
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Repeat this procedure near the other of the two centermost screw holes, popping the fourth clip free.
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Pull the lower case firmly towards the front of the MacBook (away from the hinge area) to separate the last of the clips securing the lower case.
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Pull first at one corner, then the other.
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Remove the lower case.
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Set it in place and align the sliding clips near the display hinge. Press down and slide the cover toward the hinge. It should stop sliding as the clips engage.
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When the sliding clips are fully engaged and the lower case looks correctly aligned, press down firmly on the lower case to engage the four hidden clips underneath. You should feel and hear them snap into place.
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To reassemble your device, follow the above steps in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.
To reassemble your device, follow the above steps in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.
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