Apple MacBook Pro 17-inch (original, Core 2 Duo, 2.4GHz, Late 2007 CTO, Early 2008, and Late 2008) - Manual (Page 119)

MacBook Pro 17-inch (original, Core 2 Duo, 2.4/2.6GHz, 2008) Take Apart — Logic Board 119
Procedure
Note: Some photo details below may differ slightly from the model of 17-inch MacBook Pro you
are repairing; however, the procedure itself remains consistent for any of the models.
There are two ways to remove the logic board:
Method 1: Separate the logic board from the heatsink, as usual, then reinstall thermal
material when reinstalling.
Method 2: Keep the logic board together with the heatsink and fans, thus avoiding the need
to replace thermal material.
If not replacing the logic board or heat sink, but removing the board to facilitate another
procedure, such as replacing the right speaker or bottom case, then use method 2, if desired.
Warning: Allowing a logic board to flex, even slightly, can damage solder joints to
components. To avoid flexing, hold the board vertically along the wide sides. Do not hold
the board by the ends or by the narrow neck at the fan cutout, or horizontally, as the board’s
weight can cause flex.