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Introduzione

Use this guide to replace the Touch ID sensor/power button in an Early 2020 MacBook Air.

Note that Touch ID will not function after replacing the Touch ID sensor. The MacBook’s original Touch ID sensor is uniquely paired to the logic board at the factory—and without Apple’s proprietary calibration process, even a genuine replacement Touch ID sensor from another MacBook Air won’t work.

If you replace the Touch ID sensor, you must install a paired logic board to retain Touch ID functionality.

    • Before starting this procedure, you should disable your Mac's Auto Boot feature. Auto Boot powers on your Mac when you open the lid, and may be accidentally triggered during disassembly. Use this guide to disable Auto Boot.

    • If your MacBook is running Big Sur v11.1 or later, disabling Auto Boot may not work. You can proceed normally, but make sure to disconnect the battery as soon as you're inside.

    • Completely power off and unplug your MacBook Air before you start. Close the display and flip the entire laptop upside-down.

    • Use a P5 driver to remove the following screws:

    • Two 7.9 mm screws

    • Two 7.1 mm screws

    • Six 2.6 mm screws

    • Throughout this repair, keep track of each screw and make sure it goes back exactly where it came from to avoid damaging your MacBook.

  1. MacBook Air 13" Early 2020 Touch ID Sensor Replacement, Remove the lower case: passo 2, immagine 1 di 3 MacBook Air 13" Early 2020 Touch ID Sensor Replacement, Remove the lower case: passo 2, immagine 2 di 3 MacBook Air 13" Early 2020 Touch ID Sensor Replacement, Remove the lower case: passo 2, immagine 3 di 3
    • 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.

    • To reinstall the lower case:

    • Set it in place and press firmly to engage the two hidden clips underneath. You should feel and hear them snap into place.

  2. MacBook Air 13" Early 2020 Touch ID Sensor Replacement, Disconnect the battery: passo 3, immagine 1 di 1
    • Peel back the tape covering the battery connector enough to reveal the connector underneath.

  3. MacBook Air 13" Early 2020 Touch ID Sensor Replacement: passo 4, immagine 1 di 2 MacBook Air 13" Early 2020 Touch ID Sensor Replacement: passo 4, immagine 2 di 2
    • Use a spudger to slide the battery connector parallel to the logic board and out of its socket on the logic board.

  4. MacBook Air 13" Early 2020 Touch ID Sensor Replacement, Disconnect the right speaker: passo 5, immagine 1 di 2 MacBook Air 13" Early 2020 Touch ID Sensor Replacement, Disconnect the right speaker: passo 5, immagine 2 di 2
    • Slide the pointed end of a spudger underneath the speaker cable and pry straight up to disconnect it.

  5. MacBook Air 13" Early 2020 Touch ID Sensor Replacement, Disconnect the audio board: passo 6, immagine 1 di 2 MacBook Air 13" Early 2020 Touch ID Sensor Replacement, Disconnect the audio board: passo 6, immagine 2 di 2
    • Use a T4 Torx driver to remove the three 1.4 mm screws securing the audio board connector cover.

    • Remove the audio board connector cover.

  6. MacBook Air 13" Early 2020 Touch ID Sensor Replacement: passo 7, immagine 1 di 2 MacBook Air 13" Early 2020 Touch ID Sensor Replacement: passo 7, immagine 2 di 2
    • Use the flat end of a spudger to pry the audio board connector straight up to disconnect it from the board.

    • To re-attach press connectors like this one, carefully align and press down on one side until it clicks into place, then repeat on the other side. Do not press down on the middle. If the connector is misaligned, the pins can bend, causing permanent damage.

  7. MacBook Air 13" Early 2020 Touch ID Sensor Replacement: passo 8, immagine 1 di 3 MacBook Air 13" Early 2020 Touch ID Sensor Replacement: passo 8, immagine 2 di 3 MacBook Air 13" Early 2020 Touch ID Sensor Replacement: passo 8, immagine 3 di 3
    • Use the flat end of a spudger to pry the Touch ID cable straight up to disconnect it from the audio board.

    • Continue to slide the spudger underneath the Touch ID cable to release it from the audio board.

    • The Touch ID cable is secured to the audio board with some light adhesive.

  8. MacBook Air 13" Early 2020 Touch ID Sensor Replacement, Remove the audio board: passo 9, immagine 1 di 1
    • Use a T4 Torx driver to remove the three screws securing the audio board:

    • Two 4.3 mm screws

    • One 2.4 mm screw

  9. MacBook Air 13" Early 2020 Touch ID Sensor Replacement: passo 10, immagine 1 di 1
    • Remove the audio board.

  10. MacBook Air 13" Early 2020 Touch ID Sensor Replacement, Remove the Touch ID sensor bracket: passo 11, immagine 1 di 3 MacBook Air 13" Early 2020 Touch ID Sensor Replacement, Remove the Touch ID sensor bracket: passo 11, immagine 2 di 3 MacBook Air 13" Early 2020 Touch ID Sensor Replacement, Remove the Touch ID sensor bracket: passo 11, immagine 3 di 3
    • Use a T3 Torx driver to remove the six 1.6 mm screws securing the Touch ID sensor and its bracket.

    • During reassembly, if you want your Touch ID button to be straight, don't tighten down the six screws until you adjust its position on the keyboard.

    • Remove the Touch ID sensor bracket.

  11. MacBook Air 13" Early 2020 Touch ID Sensor Replacement, Remove the Touch ID sensor: passo 12, immagine 1 di 1
    • Turn the MacBook right-side up and open the display.

    • Remove the Touch ID sensor.

Conclusione

Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before installing.

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? Check out our Answers community for troubleshooting help.

Carsten Frauenheim

Membro da: 10/03/2020

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