Introduction

Input, Output, Sideput. Whatever kind of puting you will be doing, a faulty I/O board cable is going to severely limit the functionality of your MacBook Pro. This guide will show you how to replace it.

Remove the following pentalobe screws securing the lower case to the MacBook Pro:
  • Remove the following pentalobe screws securing the lower case to the MacBook Pro:

    • Eight 3.1 mm

    • Two 2.3 mm

The number of screws listed here is wrong on my model. I had four of the smaller size.

anonymous 1286 - Reply

Just to add to my comment above (I can't edit it because it's anonymous), my MacBook Pro is a mid-2015 15in model 2.8GHz (A1398; EMC2881). For the bottom case it uses six 3.1mm screws, and four 2.3mm screws at the clutch/hinge side of the MacBook Pro. I tried using a 3.1mm screw at the clutch/hinge end, as described in the main article, and they don't fit. It has to be four 2.3mm screws.

anonymous 1286 - Reply

Removing the screw will void warranty?

Test Application - Reply

Lifting from the edge nearest the clutch cover, lift the lower case off the MacBook Pro. Lifting from the edge nearest the clutch cover, lift the lower case off the MacBook Pro.
  • Lifting from the edge nearest the clutch cover, lift the lower case off the MacBook Pro.

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The lower case has two plastic pegs (red) that fit into plastic clips in the upper case (orange). During reassembly, gently push down the center of the lower case to reattach the case to its two plastic clips. During reassembly, gently push down the center of the lower case to reattach the case to its two plastic clips.
  • The lower case has two plastic pegs (red) that fit into plastic clips in the upper case (orange).

  • During reassembly, gently push down the center of the lower case to reattach the case to its two plastic clips.

pretty hard to put it back, so I just remove the clips on the upper case....

jamiegan835 - Reply

Peel back the sticker covering the battery connector.
  • Peel back the sticker covering the battery connector.

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Gently lift each side of the battery connector to pry the connector out of its socket on the logic board. Bend the connector back toward the battery, ensuring that the battery connector doesn't accidentally make contact with the logic board. Bend the connector back toward the battery, ensuring that the battery connector doesn't accidentally make contact with the logic board.
  • Gently lift each side of the battery connector to pry the connector out of its socket on the logic board.

  • Bend the connector back toward the battery, ensuring that the battery connector doesn't accidentally make contact with the logic board.

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Remove the four 2.2 mm T5 Torx screws securing the I/O board cable connector covers.
  • Remove the four 2.2 mm T5 Torx screws securing the I/O board cable connector covers.

why is this needed for upper assembly replacement?

Andrew Chu - Reply

Remove the left connector cover. Use the flat end of a spudger to pry the left end of the I/O board cable up from its socket on the logic board.
  • Remove the left connector cover.

  • Use the flat end of a spudger to pry the left end of the I/O board cable up from its socket on the logic board.

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Remove the right connector cover. Use the flat end of a spudger to pry the right end of the I/O board cable up from its socket on the logic board.
  • Remove the right connector cover.

  • Use the flat end of a spudger to pry the right end of the I/O board cable up from its socket on the logic board.

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Peel the top I/O board cable up from the adhesive securing it to the fan.
  • Peel the top I/O board cable up from the adhesive securing it to the fan.

  • Remove the cable.

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Conclusion

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

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Andrew Optimus Goldberg

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