Introduction
Use this guide to replace the AirPort/Bluetooth card in a 21.5" Retina 4K Late 2015 iMac.
What you need
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Tool used on this step:iMac Intel 21.5" Cardboard Service Wedge$4.99
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Before beginning any work on your iMac: Unplug the computer and press and hold the power button for ten seconds to discharge the power supply's capacitors.
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Tool used on this step:Plastic Cards$2.99
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Starting from the top right corner of the iMac, wedge a plastic card between the display and frame.
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Hold the display with one hand while using your other hand to unplug the display power cable.
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Remove the two 4.0 mm T5 Torx screws securing the four antenna connectors to the AirPort/Bluetooth card.
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Tool used on this step:Tweezers$4.99
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With the tweezers pointed downwards, insert the points of the tweezers through the screw holes in the AirPort card, next to its antenna connector sockets.
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Using your finger, press down on the edge of the AirPort card to angle it until it is roughly parallel to the logic board.
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Align the AirPort card with its slot on the logic board, and press the card into the slot until the screw holes nearest the connector align with those in the logic board.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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