MacBook Pro (16-inch PROLED XDR, M5 Pro or M5 Max) Logic Board Reassembly

Before You Begin

Warning

Read Battery Safety and follow workspace and battery handling guidelines before you begin.

Important

Refer to Repairing Damaged Display Mandrels if one or both display mandrels have been damaged, torn, or separated during the main logic board procedure.

Tools

  • Adjustable torque driver (10–34 Ncm)

  • ESD-safe tweezers

  • Kapton tape

  • Nylon probe (black stick)

  • Phillips #00 screwdriver (required only if installing a replacement logic board)

  • Torque driver (blue, 0.65 kgf cm)

  • Torx Plus 3IP 44 mm half-moon bit

  • Torx Plus 5IP 50 mm bit

Note: The tools list includes tools needed for removal and reassembly. Refer to a full list of tools required for all repairs.

Reassembly

Caution

If you’re installing a replacement logic board, don’t discard the packaging and stiffeners. The packaging and stiffeners must be transferred to the existing logic board before returning to Apple Service to prevent damage during shipping.

Important

  • If you’re reinstalling the existing logic board, skip to reassembly step 10.

  • If you’re installing a replacement logic board, complete all reassembly steps.

  1. Use the Phillips #00 screwdriver to fully loosen the six captive Phillips #00 screws from the top stiffeners on the replacement logic board.

    • Note: The four stiffeners are labeled as follows:

      • TL (top left)

      • TR (top right)

      • BL (bottom left)

      • BR (bottom right)

  2. Lift the top stiffeners off the replacement logic board and set them aside.

  3. Lift the replacement logic board off the bottom stiffeners and set it aside.

  4. Position the bottom stiffeners on the existing logic board as shown. Align the screw holes in the bottom stiffeners with the screw holes in the existing logic board. Hold the bottom stiffeners in place and turn over the logic board.

  5. Position the top stiffeners on the existing logic board. Align the screw holes in the top stiffeners with the screw holes in the existing logic board.

    • Important: The captive screws in the top stiffeners install through the screw holes of the logic board and into the screw holes in the bottom stiffeners.

  6. Use the Phillips #00 screwdriver to fully reinstall the six captive Phillips #00 screws into the four stiffeners.

  7. Place the existing logic board inside the reused ESD-safe packaging.

  8. Position the packaged logic board in the foam frame.

  9. Close and seal the box. Ship the box to Apple Service.

  10. Ensure that the fan duct covers and flex cables are folded back and secured to the top case with Kapton tape.

  11. Tilt down the SD-card edge of the logic board to position it in the top case (1). Hold back the trackpad and battery management unit (BMU) flex cables (2). Hold the logic board by the edges. Then lower the logic board into the top case (3), clearing flex cables out of the way as you lower it.

  12. Set the torque value on the 10–34 Ncm adjustable torque driver to 29.5 Ncm. Then use the adjustable torque driver and 5IP bit to reinstall 10 5IP screws (1-4).

    • Two screws (923-15493) (1)

    • Two screws (923-15496) (2)

    • Four screws (923-15494) (3)

    • Two screws (923-15495) (4)

  13. Set the torque value on the adjustable torque driver to 25 Ncm. Then use the adjustable torque driver and 5IP bit to reinstall four 5IP screws (923-15489).

  14. Slide the ends of the eight flex cables (1-8) into the connectors.

    • Touch ID flex cable (1)

    • Audio board flex cable (2)

    • Microphones flex cable (3)

    • Left speaker flex cable (4)

    • Left fan flex cable (5)

    • Keyboard flex cable (6)

    • Right fan flex cable (7)

    • Right speaker flex cable (8)

  15. Gently flip down the eight locking levers onto the ends of the eight flex cable connectors.

  16. Press the ends of the five flex cables (1-5) to the connectors on the logic board.

    • USB-C board flex cable (1)

    • Keyboard backlight flex cable (2)

    • MagSafe 3 flex cable (3)

    • USB-C board flex cables (4, 5)

    •   Caution

      • Ensure that the end of each cable is centered on the connection before pressing down.

      • Don't pull on or damage the polyester film around the keyboard backlight connector.

  17. Slide the left end of the left display clip into the top case while aligning the clip with the screw standoffs. Then press down on the right end of the clip to snap it into place as shown.

  18. Press the end of the display backlight flex cable to the connector.

    • Caution: Ensure that the end of the flex cable is centered on the connector before pressing.

  19. Slide the left end of the left display clip into the top case while aligning the clip with the screw standoffs. The press down on the right end of the clip to snap it into place as shown.

  20. Press the end of the camera flex cable to the connector. Then press the end of the embedded DisplayPort (eDP) flex cable to the connector.

    • Important: Ensure that flex cables are properly connected.

  21. Peel the blue bottom adhesive liner from the replacement polyester tape for one of the fan flex cable connectors. Use the top liner as a handle to position the tape over the fan flex cable connector.

    • Important: Don't remove the small blue adhesive liners on the tabs at the bottom of the polyester tape yet.

  22. Line up the edges of the polyester tape on the square area around the connector. Then lower the tape onto the fan flex cable connector. Position the wide part of the tape closest to the front of the computer as shown.

  23. Press on the center of the tape for 30 seconds. Then remove the clear top liner and small blue adhesive liners from the polyester tape.

  24. Use the black stick to gently press the left, right, and bottom edges of the polyester film against the connector and logic board.

  25. Repeat steps 21 through 24 with the replacement polyester tape for the other fan flex cable connector. Then continue to step 26.

  26. Position the three cowlings (1-3) over the connectors on the logic board.

    • Right USB-C board connector cowling (1)

    • Display backlight/keyboard backlight cowling (2)

    • L-shaped USB-C/MagSafe 3 cowling (3)

      • Important

        • Ensure that the rounded end of the right USB-C board connector cowling (1) points toward the hinge side of the computer.

        • Ensure that the tall foam on the right USB-C board connector cowling (1) faces up.

        • Ensure that that flex cables are properly connected.

  27. Use the blue torque driver and 3IP bit to reinstall nine 3IP screws (1, 2).

    • Three 3IP screws (923-15492) (1)

    • Six 3IP screws (923-15323) (2)

Reinstall the following parts to complete reassembly:

Important

  • Depending on the part replaced, Repair Assistant may be available on the device to finish the repair. Learn how to initiate Repair Assistant.

  • Replacing the logic board will change the electronic serial number of the Mac. The new serial number will replace the previous number in System Settings and should be recorded for future reference. The serial number etched on the bottom case will not match the new serial number.

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