iFixit

The optical drive is attached via three Phillips screws.

The brackets and screw layout are identical to the older MacBook Unibody.

Removing the optical drive exposes the right speaker.

It's held in place by adhesive. A quick pry with the spudger will loosen it.

A connector, three Phillips screws, and bam -- the fan's out!

Disconnect the LVDS connector.

Remove 7 motherboard screws.

Remove 2 DC-in screws.

Disconnect trackpad, keyboard, and battery level indicator cables.

Remove LVDS cable retaining bracket.

And the logic board is almost out...

Pop out the microphone from its cave.

The logic board is finally free!

A couple of images of the logic board, before we strip it naked...

Like the MacBook Unibody, the heat sink comes out along with the logic board.

Both sides of the logic board.

Hi-res pictures of the front and back.

Not for the faint of heart -- full-size images (5 MB a pop!): front and back.