CAUTION: Before you begin the following procedure, see the safety instructions in the Product Information Guide.
NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.
NOTICE: To help prevent damage to the system board, remove the main battery (see Before Working Inside Your Computer) before working inside the computer.
Loosen in consecutive order the four captive screws, labeled "1" through "4," that secure the
processor thermal-cooling assembly to the system board.
Lift the processor thermal-cooling assembly and remove it from the system board.
1
processor thermal-cooling assembly
2
captive screws (4)
Replacing the Processor Thermal-Cooling Assembly
Place a new thermal pad on the underside of the thermal-cooling assembly (the part of the thermal-
cooling assembly that will cover the new processor):
Remove the backing from the new thermal pad, taking care not to tear the pad.
Place the pad's adhesive-side against the part of the thermal-cooling assembly that will cover the
new processor, and press it into place.
NOTE: If you are replacing the thermal-cooling assembly without removing and replacing a new processor, you can place the new thermal pad directly on any existing thermal pad already installed on the thermal-cooling assembly. It is not necessary to remove an existing pad or to clean the surface.
1
alignment area on the underside of the processor thermal cooling assembly
2
thermal pad
NOTE: When replacing the processor thermal-cooling assembly, hold up the mylar flap on the processor thermal-cooling assembly so that the flap rests on top of the fan when the thermal-cooling assembly is in place.
Place the processor thermal-cooling assembly over the processor.
Tighten the four captive screws, labeled "1" through "4," in consecutive order.
