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소개

Restore sound to your iMac by replacing the audio board.

  1. iMac Intel 20" EMC 2266 Audio Board Replacement, Access Door: step 1, image 1 of 1
    • Lay your iMac front side down on a table with the lower edge facing yourself.

    • Loosen the single Phillips screw in the center of the access door.

    • This screw is captive in the access door.

    • Remove the access door from your iMac.

    • The glass panel is fixed onto the front bezel with fourteen magnets around its perimeter.

    • Stick two suction cups to opposing corners of the glass panel.

    • To attach the suction cups we sell, first position the suction cup with the movable handle parallel to the face of the glass panel. While lightly holding the suction cup against the glass, raise the movable handle until it is parallel with the other handle.

    • If your suction cups refuse to stick, try cleaning both the glass panel and the suction cup with a mild solvent.

  2. iMac Intel 20" EMC 2266 Audio Board Replacement: step 3, image 1 of 1
    • Gently pull the glass panel straight up off the iMac.

    • The glass panel has several positioning pins around its perimeter. To avoid shearing these pins off the glass panel, be sure to only pull straight up during removal.

    • Be meticulous about cleaning the LCD and the inside face of the glass panel before reinstallation, as any fingerprints or dust trapped inside will be annoyingly visible when the display is on.

    • When replacing the glass, be sure there's nothing between the glass and the frame. Stray cables could be damaged or crack the glass.

  3. iMac Intel 20" EMC 2266 Audio Board Replacement, Front Bezel: step 4, image 1 of 1
    • Remove the following 12 screws securing the front bezel to the rear case:

    • Eight 13 mm T8 Torx.

    • Four 25 mm T8 Torx.

    • On the 24" iMac Intel Model A1225, the bottom center two screws are long (26mm), four on sides (two left, two right) are medium (18mm), and the remaining 6 (four top, two bottom corners) are short (14mm).

  4. iMac Intel 20" EMC 2266 Audio Board Replacement: step 5, image 1 of 2 iMac Intel 20" EMC 2266 Audio Board Replacement: step 5, image 2 of 2
    • The front bezel is still attached to the iMac by the microphone cable.

    • Gently lift the front bezel from its top edge off the rear case.

    • Once the top edge of the front bezel has cleared the rear case, rotate the front bezel toward the stand and lift it off the rear case.

    • Rotate the front bezel away from the rest of the device and lay it above the top edge of the iMac.

    • When reinstalling the front bezel, start at the lower edge and make sure it is flush with the rear case before lowering the top edge onto the iMac.

  5. iMac Intel 20" EMC 2266 Audio Board Replacement: step 6, image 1 of 1
    • Disconnect the microphone cable connector, removing tape as necessary.

    • For the front bezel to sit properly, be sure to tuck the microphone cable and connector into the void next to the camera board.

  6. iMac Intel 20" EMC 2266 Audio Board Replacement, Display Panel: step 7, image 1 of 1
    • Pull the LCD temperature sensor connector straight up off its socket on the logic board.

    • (located at the top of the logic board on the 24")

  7. iMac Intel 20" EMC 2266 Audio Board Replacement: step 8, image 1 of 2 iMac Intel 20" EMC 2266 Audio Board Replacement: step 8, image 2 of 2
    • Remove the two T6 Torx screws securing the display data cable to the logic board.

    • Use the attached black tab to pull the display data cable connector straight away from the logic board.

  8. iMac Intel 20" EMC 2266 Audio Board Replacement: step 9, image 1 of 2 iMac Intel 20" EMC 2266 Audio Board Replacement: step 9, image 2 of 2
    • Remove the eight T8 Torx screws securing the display panel to the rear case.

    • Lift the display panel from its left edge and rotate it toward the right edge of the iMac.

  9. iMac Intel 20" EMC 2266 Audio Board Replacement: step 10, image 1 of 2 iMac Intel 20" EMC 2266 Audio Board Replacement: step 10, image 2 of 2
    • With the display panel still lifted, disconnect the four inverter cables.

    • During reinstallation, place the four inverter cable connectors in voids between components attached to the rear panel so the display panel will sit flush on the edges of the rear case.

    • (combined into one plug in on the 24")

    • Be sure to keep track of the cables, as they do not have proprietary sockets. Mismatched cables can cause screen issues.

  10. iMac Intel 20" EMC 2266 Audio Board Replacement, Right Speaker: step 11, image 1 of 1
    • Remove the single T10 Torx screw securing the right speaker to the rear case.

  11. iMac Intel 20" EMC 2266 Audio Board Replacement: step 12, image 1 of 1
    • Disconnect the right speaker cable connector from the audio board by pulling it straight up from its socket.

  12. iMac Intel 20" EMC 2266 Audio Board Replacement: step 13, image 1 of 1
    • Gently lift the right speaker out of the rear case.

  13. iMac Intel 20" EMC 2266 Audio Board Replacement, Audio Board: step 14, image 1 of 1
    • Disconnect the left speaker cable connector from the audio board by pulling it straight away from its socket.

    • Pull the connector parallel to the face of the audio board.

  14. iMac Intel 20" EMC 2266 Audio Board Replacement: step 15, image 1 of 1
    • Disconnect the microphone cable connector from the audio board by pulling it straight up from its socket.

  15. iMac Intel 20" EMC 2266 Audio Board Replacement: step 16, image 1 of 2 iMac Intel 20" EMC 2266 Audio Board Replacement: step 16, image 2 of 2
    • Using the tip of a spudger, flip up the audio to logic board ribbon cable retaining flap (toward the bottom edge of your iMac).

    • Pull the audio to logic board ribbon cable straight out of its socket.

  16. iMac Intel 20" EMC 2266 Audio Board Replacement: step 17, image 1 of 1
    • Remove the four T6 Torx screws securing the audio board to the logic board.

  17. iMac Intel 20" EMC 2266 Audio Board Replacement: step 18, image 1 of 1
    • Use the sharp end of a spudger to remove the EMI aluminum tape covering the microphone/headphone jacks.

  18. iMac Intel 20" EMC 2266 Audio Board Replacement: step 19, image 1 of 1
    • Carefully lift the audio board out of your iMac.

결론

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

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