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iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement

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  1. iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement, Logic Board Assembly: étape 1, image 1 de 2 iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement, Logic Board Assembly: étape 1, image 2 de 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.

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  2. iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 2, image 1 de 2 iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 2, image 2 de 2

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

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  3. iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 3, image 1 de 3 iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 3, image 2 de 3 iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 3, image 3 de 3

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

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  5. iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 4, image 1 de 3 iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 4, image 2 de 3 iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 4, image 3 de 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.

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  6. iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 5, image 1 de 3 iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 5, image 2 de 3 iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 5, image 3 de 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.

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  7. iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 6, image 1 de 3 iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 6, image 2 de 3 iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 6, image 3 de 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.

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  8. iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 7, image 1 de 1

    • Remove the following screws securing the exhaust duct to the rear enclosure:

    • Two 6.3 mm T8 screws

    • Two 4.7 mm T8 screws

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  9. iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 8, image 1 de 1

    • Remove the four 7.2 mm T10 screws securing the logic board to the rear enclosure.

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  10. iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 9, image 1 de 3 iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 9, image 2 de 3 iMac Intel 21.5" EMC 2544 Logic Board Assembly Replacement: étape 9, image 3 de 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.

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Conclusion

To reassemble your device, follow these instructions in reverse order.

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Sam Goldheart

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