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2.0GHz, 2.3GHzもしくは2.6GHzクアッドコアIntel Core i7プロセッサ (Turbo Boost 最大3.8GHz) 6MB共有L3 キャッシュ付き。

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The sprung-loaded pins on the motherboard

There are some interesting sprung-loaded pins on the motherboard!

Anyone know what they are used for other than possible test points?

I have an idea.

I have been having problems for the last few days where my MBP will just shut down randomly and it started not long after I lost a screw (the second ) from the base plate. MBP kept shutting down for no obvious reason.

Apple could not find a hardware fault

When at the genius bar I asked them to replace to two screw... since then the MBP has been stable, so I reckon those pins have a grounding/secure point - if no proper contact with the base plate the board issues a shut down, like a close-door replay switch!

So - have I hit on a possible issue, which may solve problems for others?

Antony

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Not really, a Macbook board would work flawlessly without any grounding to bottom case and outside the topcase too.

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The Sustainable PM  going by your description I believe you are talking about the Pogo pins. Those help to provide ground between the logic board and the metal case. Check on here for more info.

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The two pogo pins near the CPU are used in the assembly process.

They offer two functions: As OT commented for grounding of the jig which places the heat sink onto the CPU, as well as its alignment of the fixture with the heatsink to its' mount points on the logic board.

They offer no other benefit.

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The Sustainable PM さん、ありがとうございました！
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