iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement

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Use this guide to replace your AirPort/Bluetooth card.

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Adım 1 Display

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, Display: adım 1, 1 resimden 1.

Bu adımda kullanılan alet:

iMac Intel 21.5" Cardboard Service Wedge

$4.99

Satın Al

With the hinge free to move, the iMac will be unbalanced and hard to work on. Repairs can be completed as shown, but are faster and easier with an iMac service wedge.
If you are using the iFixit cardboard service wedge, follow these assembly directions to put it together.
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.
Be very careful not to touch the capacitor leads or any exposed solder joints on the back of the power supply. Only handle the board by the edges.

Düzenle

Adım 2

Starting on the left of the display, near the power button, insert the iMac Opening Tool into the gap between the glass panel and the rear enclosure.
The hub on the iMac Opening Tool will keep you from pushing the wheel in too far. If using a different tool, insert no more than 3/8" into the display. Otherwise, you risk severing antenna cables and causing serious damage.
Be gentle! The glass may crack if pried too much. Use a hairdryer to heat the edges and loosen the tape if the room temperatures are low.

Düzenle

Adım 3

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 3, 3 resimden 3.

Use the tool like a pizza cutter—roll it along through the gap, and it will cut the foam adhesive through the center.
Be sure to always push with the handle behind the cutting wheel. If you pull, the wheel might get pulled out of the handle.
Run the tool up along the left side of the display.

Düzenle

Adım 4

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 4, 3 resimden 3.

Continue running the tool up around the top left corner.

Düzenle

Adım 5

Cut the adhesive along the top left of the display.

Düzenle

Adım 6

Continue along the top of the display.
You may want to run the tool back and forth through what you've already cut a few times, to ensure you get as much of the adhesive separated as possible.

Düzenle

Adım 7

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 7, 3 resimden 3.

Push the tool around the top right corner of the display.

Düzenle

Adım 8

Wheel the tool down along the right side of the display.

Düzenle

Adım 9

Finish pushing the opening tool to the bottom of the right side of the display.
At this point, you'll want to run the tool back around the entire display, to ensure you cut as much adhesive as possible.

Düzenle

Adım 10

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 10, 3 resimden 3.

Bu adımda kullanılan alet:

Plastic Cards

$2.99

Satın Al

While the opening tool cut most of the adhesive, the display will still be slightly adhered to the case. A plastic card will be necessary to free up the last of this adhesive.
Set the iMac face-up on a table.
Starting from the top right corner of the iMac, wedge a plastic card between the display and frame.
Be careful not to insert the plastic card more than 3/8", or you may damage internal components.

Düzenle

Adım 11

Gently twist the plastic card sideways to create a gap between the display and frame.
Move slowly and be careful not to stress the display glass too much—you only need to make a gap of about 1/4".

Düzenle

Adım 12

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 12, 3 resimden 3.

Slide the card toward the center of the display to cut any of the remaining adhesive along the top right corner of the iMac.
Be sure to stop before the iSight camera, or you may damage it.

Düzenle

Adım 13

Wedge the plastic card into the top right corner once again and let it stay there to keep the adhesive from resettling.

Düzenle

Adım 14

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 14, 3 resimden 3.

Insert a second plastic card into the gap between the display and frame located at the top left corner of the iMac.

Düzenle

Adım 15

Gently twist the card upward, slightly increasing the space between the display and frame.
As with the other side, twist slowly to allow the adhesive time to separate, and be careful not to over-stress the display glass.

Düzenle

Adım 16

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 16, 3 resimden 3.

Slide the plastic card toward the center, again stopping just before the iSight camera.

Düzenle

Adım 17

Wedge the plastic card back into the top left corner.

Düzenle

Adım 18

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 18, 3 resimden 3.

With both plastic cards inserted as shown near the corners, gently twist the cards sideways to increase the gap between display and case.
If there are any sections that seem to stick and won't separate, stop twisting and use one of the cards to cut the remaining adhesive.
Begin to lift the top of the display up from the frame.
Only lift the display a few inches—the display data and power cables are still connected to the logic board.

Düzenle

Adım 19

While holding the display up with one hand, use the other hand to unplug the display power cable. Make sure that you pull the cable out from the plastic tab, and not by pulling on the color wires.
Lift the display up enough to have easy access to the connector, but not so much that you stretch the cables and stress their connections (about 8").

Düzenle

Adım 20

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 20, 3 resimden 3.

Use the tip of a spudger to flip up the metal retaining bracket on the display data cable.
Carefully pull the display data cable from its socket on the logic board.
Be sure to pull the display data cable connector straight out of its socket.

Düzenle

Adım 21

Lift the display up to a near-vertical position.
At this point there is still a strip of adhesive along the bottom of the display, that will hold the display to the frame like a hinge. You can loosen this adhesive by working the display up and down a few times.

Düzenle

Adım 22

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 22, 3 resimden 3.

Be very careful not to touch the capacitor leads or any exposed solder joints on the back of the power supply (boxed in red).
Grasp the small tab at the end of one of the bottom edge display adhesive strips and pull the adhesive toward the top of the iMac to remove it.
Repeat this step with the other adhesive strip and remove it.
If either adhesive strip breaks before it's removed, use a plastic card to slice through the remaining adhesive.

Düzenle

Adım 23

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 23, 3 resimden 3.

Lift the display up from the frame and remove it from the iMac.
It may be necessary to slowly lift from one side, to peel against the remaining adhesive.
Be very careful handling the display—it's big, heavy, and made of glass.
During reassembly, head over to our display adhesive guide to install the new adhesive.

Düzenle

Adım 24 Right Speaker

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, Right Speaker: adım 24, 2 resimden 1.

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, Right Speaker: adım 24, 2 resimden 2.

Use a spudger to loosen the right speaker cable's connector from its socket on the logic board.
It is useful to push downward on both short sides of the connector to "walk" it out of its socket. Be careful with the corners of the connectors, they can be easily broken off.
Pull the connector downwards to remove it from its socket.

Düzenle

Adım 25

Remove the two 10.0 mm T10 screws securing the right speaker to the rear enclosure.

Düzenle

Adım 26

Pull the top of the right speaker away from the rear enclosure, about half an inch, to expose the antenna cable running down its right side.

Düzenle

Adım 27

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 27, 3 resimden 3.

Insert the tip of a spudger between the right speaker and the antenna cable that is routed into the speaker's right side.
Run the spudger down along the right side of the speaker to pry the antenna cable from its channel in the right speaker.

Düzenle

Adım 28

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 28, 3 resimden 3.

Pull the right speaker straight up about an inch, toward the top of the iMac.
Lift the right speaker straight up and remove it from the iMac. This may take some force, both hands and rocking the speaker right and left to get it out.

Düzenle

Adım 29 Hard Drive Brackets

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, Hard Drive Brackets: adım 29, 1 resimden 1.

Remove the following screws securing the hard drive bracket to the rear enclosure:
Two 21 mm T10 Torx screws from the left-hand hard drive bracket.
One 9 mm T10 Torx screw.
One 27 mm T10 Torx screw.

Düzenle

Adım 30

Remove the left and right hard drive brackets from the iMac.

Düzenle

Adım 31 Power Supply

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, Power Supply: adım 31, 3 resimden 1.

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, Power Supply: adım 31, 3 resimden 2.

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, Power Supply: adım 31, 3 resimden 3.

The next few steps bring your hands close to the exposed face of the power supply. Do not touch the face of the power supply to avoid a high voltage shock from the many large capacitors attached to the board.
Use the tip of a spudger to push each side of the power button cable connector and gently "walk" it out of its socket.

Düzenle

Adım 32

Gently push upward on each side of the power supply control cable connector with the tip of a spudger to gently "walk" it out of its socket.

Düzenle

Adım 33

Remove the two 7.2 mm T10 screws securing the power supply to the rear enclosure.

Düzenle

Adım 34

When working on the power supply, be very careful not to touch the capacitor leads or any exposed solder joints on the back of the power supply. Only handle the board by the edges.
Tilt the power supply forward.

Düzenle

Adım 35

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 35, 3 resimden 3.

Pull the power supply slightly up and out from the rear enclosure.
Rotate the power supply counterclockwise, lifting the right side up about an inch higher than the left.

Düzenle

Adım 36

Slide the power supply to the right to clear the screw posts on the rear enclosure.

Düzenle

Adım 37

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 37, 3 resimden 3.

Rock the power supply forward and remove it from its recess in the rear enclosure.
Do not try to completely remove the power supply from the iMac yet—it is still connected to the logic board.

Düzenle

Adım 38

Be very careful not to touch the capacitor leads or any exposed solder joints on the back of the power supply. Only handle the board by the edges.
Flip the top of the power supply towards you to access the DC power cable connection behind the logic board.
Squeeze the DC power cable connector tab and pull it straight out of its socket on the back of the logic board.

Düzenle

Adım 39

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 39, 3 resimden 3.

You may find it helpful to set the iMac down on its back on the table for the next couple of steps.
Use the flat end of a spudger to push the clip on the side of the AC inlet cable connector inward.
While holding on the release clip with the spudger, grasp the AC inlet cable, and pull the connector straight out of its socket.

Düzenle

Adım 40

Remove the power supply from the iMac.

Düzenle

Adım 41 Fan

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, Fan: adım 41, 2 resimden 1.

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, Fan: adım 41, 2 resimden 2.

Gently pull the fan cable connector straight away from its socket on the logic board.

Düzenle

Adım 42

Remove the three 12.3 mm T10 shoulder screws securing the fan to the rear enclosure.

Düzenle

Adım 44 Hard Drive

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, Hard Drive: adım 44, 3 resimden 1.

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, Hard Drive: adım 44, 3 resimden 2.

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, Hard Drive: adım 44, 3 resimden 3.

Lift the hard drive from the edge nearest the logic board and pull it slightly out of its recess.
The hard drive is attached by two cables, do not attempt to fully remove it from the iMac.

Düzenle

Adım 46

Unplug the SATA data cable from the hard drive.

Düzenle

Adım 47

Remove the hard drive from the iMac.

Düzenle

Adım 48 Hard Drive Tray

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, Hard Drive Tray: adım 48, 1 resimden 1.

Remove the single 7.2 mm T10 screw securing the hard drive tray to the rear enclosure.

Düzenle

Adım 49

Remove the hard drive tray from the rear enclosure.

Düzenle

Adım 50 Logic Board Assembly

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, Logic Board Assembly: adım 50, 2 resimden 1.

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, Logic Board Assembly: adım 50, 2 resimden 2.

Push on each side of the left speaker cable connector with the tip of a spudger and gently "walk" it out of its socket.

Düzenle

Adım 51

De-route the left speaker cable by pulling it straight up out of the retaining clip in the back of the rear enclosure.

Düzenle

Adım 52

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 52, 3 resimden 3.

In a similar fashion as the previous step, de-route the SATA data and power cables up out of the retaining clip.

Düzenle

Adım 53

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 53, 3 resimden 3.

Use the flat edge of a spudger to flip up the metal retaining bracket on the iSight camera cable connector.
Pull the iSight camera cable straight out of its socket on the logic board.
This is a delicate connector that can be easily damaged.

Düzenle

Adım 54

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 54, 3 resimden 3.

Use the flat edge of a spudger to disconnect each of the four antenna connectors from the AirPort/Bluetooth card.
Note the original positions for each connector when reconnecting the cables.

Düzenle

Adım 55

If brackets secure the four antenna cables, remove the two T5 Torx screws from the brackets.

Düzenle

Adım 56

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 56, 3 resimden 3.

Use the flat edge of a spudger to pry the headphone jack cable connector from its socket on the logic board.
Push the cable slightly to the right.

Düzenle

Adım 57

Remove the following screws securing the exhaust duct to the rear enclosure:
Two 6.3 mm T8 screws
Two 4.7 mm T8 screws

Düzenle

Adım 58

Remove the four 7.2 mm T10 screws securing the logic board to the rear enclosure.
Depending on the age and model of your iMac, a T9 driver may work best.

Düzenle

Adım 59

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 59, 3 resimden 3.

Tilt the top of the logic board away from the rear enclosure.
Lift the logic board straight up and out of the iMac.
Be careful not to snag the board on any of the rear case's screw posts.
The I/O boards at the bottom of the logic board will be the greatest challenge. It is recommended to pull gently to avoid any damage.
During reassembly of the logic board, pay attention to the position of the I/O connectors. When the board is back in the case, insert a USB or Thunderbolt cable into one of the connectors to align it perfectly.

Düzenle

Adım 60 AirPort/Bluetooth Card

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement, AirPort/Bluetooth Card: adım 60, 1 resimden 1.

Remove the two 3.2 mm T5 screws securing the AirPort/Bluetooth card to the logic board.

Düzenle

Adım 61

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement: adım 61, 3 resimden 3.

Slightly lift the AirPort/Bluetooth card and pull it straight out its socket.
Do not use excessive force to pull the end of the AirPort/Bluetooth Card away from its socket on the logic board. Doing so may damage the socket.
When reinstalling the card, be sure it is properly seated before reinstalling the retaining screws.

Düzenle

Sonuç

To reassemble your device, follow these instructions in reverse and use our Adhesive Strips Guide to reattach the display glass.

5 farklı kişi bu kılavuzu tamamladı.

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Sam Goldheart

Üyelik tarihi: 10/18/12

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Ekip

iFixit iFixit üyesi

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I successfully upgraded the Wi-Fi Bluetooth card in my late 2012 iMac to 802.11ac following this guide! The new card is now the same as what´s in the new 2013 iMacs, I used the 2013 iMac teardown to find the right part:)

Runar Vaernes - 4 Şub 2014 Yanıt

Do I need to remove/clean the paste that locks the card before installing a new one? If I use a used one, what kind of paste do I have to use to replace the old one?

Pzucchi - 3 Kas 2016 Yanıt

I just bought a new BT card (a >2013 version!) and it works!!!! Just some advise before you start: follow the instructions above including step 28. At this point unscrew the big sized mainboard screws. This allows some movement so you can pull back the motherboard if needed and will avoid straining it to much. you can nog pull out the Bluetooth card without dismantling the whole computer! Putting the new card back also works fine this way. This Saves you massive time!

aarsentim - 16 Kas 2019 Yanıt

iMac Intel 21.5" EMC 2544 AirPort/Bluetooth Card Replacement

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