iFixit

Remove the following 8 screws:

• Eight 3.5 mm Phillips.
• Two 3.5 mm Phillips near the sleep light connector.
• One 3.5 mm Phillips with a large head in the lower left corner.
• One 4.5 mm Phillips.

From top to bottom, disconnect the inverter, fan, and sleep light cables from the logic board.

When replacing the logic board, make sure that the inverter cable is not pinned under the logic board.

Lift the logic board up from the right side, and slide it up and out of the computer.

When replacing your logic board, be sure to transfer your old RAM chips to your new logic board.

Most 14" iBooks use thermally conductive pads rather than thermal paste to conduct heat from the processors to the heat sink. It is unlikely that these pads will fall off or become unusable during reinstallation. If so, be sure to apply a liberal amount of thermal paste to the surface of all processors before mounting the heat sink. This will avoid any damage from overheating.