Apple MacBook Pro 17-inch (original, Core 2 Duo, 2.4GHz, Late 2007 CTO, Early 2008, and Late 2008) - Manual (Page 134)

MacBook Pro 17-inch (original, Core 2 Duo, 2.4/2.6GHz, 2008) Take Apart — Logic Board 134
Verify that the EMI gasket is on the camera cable connector. 16.
Verify that the ExpressCard cage flex connector, from the left I/O board, is seated properly all 17.
along the connector. If the connector on the flex is not lined up with the connector on the
logic board, a bad connection with a characteristic bow can occur.
Reassemble and test all ports, components and functions of the computer. 18.
Note: After installing new thermal grease, if you must briefly re-separate the logic board
from the heatsink, it is acceptable to retain the same, new thermal grease, as long as it is not
handled excessively.