iMac (24-inch, 2023) Audio Board

Before You Begin

Remove the following parts before you begin:

Tools

  • 3.5 mm hex nut driver (923-06029)

  • Adjustable torque driver (10–34 Ncm) (923-02995)

  • ESD-safe tweezers

  • Nylon probe (black stick)

  • Support wedge kit (076-00507)

  • Torx plus 3IP 25 mm bit (923-07593)

  • Torx T6 70 mm bit (923-07592)

Refer to a full list of tools required for all repairs.

Caution

The power button flex cable connects to the audio board. Damage to the power button flex cable requires a replacement housing.

Removal

  1. Position the housing with the logic board facing up.

  2. Gently release the adhesive between the audio board and power button flex cable and the housing. Use the black stick where necessary to release the adhesive.

  3. Use the flat end of the black stick to press and hold the “PUSH” button on the zero-insertion force (ZIF) audio board and power button connector on the logic board (1). Then slide the end of the audio board and power button flex cable out of the connector (2).

  4. Gently lift the audio board and power button flex cable to access the ZIF audio board connector near the edge of the housing. Then use the flat end of the black stick to press and hold the “PUSH” button on the ZIF audio board connector (1). Use ESD-safe tweezers to grasp the end of the flex cable and slide it out of the connector (2).

  5. Use the 10–34 Ncm adjustable torque driver and 3IP bit to remove the four 3IP screws from the Wi-Fi and Bluetooth antenna.

    • 923-05574 (1)

    • 923-09773 (2)

  6. Gently move aside the Wi-Fi and Bluetooth antenna to access the audio board screws. Then use the 10–34 Ncm adjustable torque driver and 3IP bit to remove the two 3IP screws from the audio board.

    • 923-10012 (1)

    • 923-09775 (2)

  7. Use the 3.5 mm hex nut driver to remove the 3.5 mm hex nut screw (923-09774) from the audio board.

  8. Use the 10–34 Ncm adjustable torque driver and Torx T6 bit to remove the two T6 standoff screws.

  9. Flip up the locking lever on the power button connector (1). Then use ESD-safe tweezers to slide the end of the power button flex cable out of the connector on the audio board (2).

    • Caution: Handle the power button flex cable carefully. The cable is a non-removable part. If it is damaged, you must replace the housing.

  10. Insert the flat end of the black stick under the audio board as shown to loosen the adhesive between the audio board and the housing (1).

  11. Then move the black stick up and down as shown (2, 3) to loosen the remaining adhesive between the audio board and the housing.

  12. Use ESD-safe tweezers to gently peel up the audio board and remove it from the housing.

Reassembly

  1. If you are installing a replacement audio board, remove the three pieces of adhesive backing from the replacement audio board.

  2. Insert the audio board into the housing.

    • Caution: Ensure that the power button flex cable is not trapped under the audio board before proceeding to the next step.

  3. Align the audio board so the headphone jack is aligned with the hole in the exterior of the housing.

  4. Set the torque value on the 10–34 Ncm adjustable torque driver to 11.5 Ncm.

  5. Use the black stick to gently push the audio board against the left side of the housing as you use the 10–34 Ncm adjustable torque driver and 3IP bit to reinstall one 3IP screw (923-09775) into the audio board (1).

  6. Use the black stick to gently push the audio board against the left side of the housing as you use the 3.5 mm hex nut driver to reinstall the 3.5 mm hex nut screw (923-09774) into the audio board (2).

  7. Use the black stick to push the audio board flex cable against the housing as shown to align the flex cable with the screw hole in the housing.

  8. Ensure that the power button flex cable is aligned with its connector (1). If it’s aligned, press the audio board flex cable in the area shown (2) to adhere it to the housing. Then proceed to the next step. If the power button flex cable isn’t aligned with its connector, repeat steps 7 and 8.

  9. Keep the 10–34 Ncm adjustable torque driver value at 11.5 Ncm. Use the adjustable torque driver and 3IP bit to reinstall one 3IP screw (923-10012) into the audio board.

  10. Press the audio board flex cable in the three areas shown to adhere it to the housing.

  11. Slide the end of the power button flex cable into the connector (1). Then flip down the locking lever (2).

  12. Slide the end of the audio board flex cable into the ZIF audio board connector near the edge of the housing.

    • Caution: Ensure that the audio board flex cable is fully inserted into the ZIF audio board connector. A partially connected flex cable may prevent the computer from turning on.

  13. Slide the end of the audio board and power button flex cable into the ZIF audio board connector on the logic board.

  14. Press along the audio board and power button flex cable to activate the adhesive between the flex cable and the housing.

  15. Set the torque value on the 10–34 Ncm adjustable torque driver to 17.5 Ncm. Use the adjustable torque driver and Torx T6 bit to reinstall the two T6 standoff screws.

  16. Set the torque value on the 10–34 Ncm adjustable torque driver to 10 Ncm. Use the adjustable torque driver and 3IP bit to reinstall the four 3IP screws into the Wi-Fi and Bluetooth antenna.

    • 923-05574 (1)

    • 923-09773 (2)

Reinstall the following parts to complete reassembly:

Published Date: