CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.
Loosen the captive screw on each side of the heat sink assembly.
CAUTION: Despite having a plastic shield, the heat sink assembly may be very hot during normal operation. Be sure that it has had sufficient time to cool before you touch it.
NOTICE: Before rotating the heat sink assembly upward, twist the assembly side to side to help break the thermal grease bond between the heat sink and the processor. This is to prevent damage to the processor due to pulling the processor out of the socket while rotating the heat sink assembly upward.
Rotate the heat sink assembly upward, and remove it from the computer.
Lay the heat sink assembly down on its top, with the thermal grease facing upward.
1
heat sink assembly
2
captive screw housings (2)
NOTICE: Unless a new heat sink is required for the new processor, reuse the original heat sink assembly when you replace the processor.
Pull the release lever straight up until the processor is released.
1
processor
2
release lever
3
socket
NOTICE: Be careful not to bend any of the pins when you remove the processor. Bending the pins can permanently damage the processor.
Remove the processor from the socket.
Leave the release lever extended in the release position so that the socket is ready for the new processor and go to Installing the Processor.
NOTICE: After removing the processor, be careful not to get any thermal grease on the processor pins. Thermal grease on the pins can permanently damage the processor.
Installing the Processor
NOTICE: Ground yourself by touching an unpainted metal surface on the back of the computer.
NOTICE: When replacing the processor, do not bend any of the pins.
NOTICE: Be careful not to bend any of the pins when you unpack the processor. Bending the pins can permanently damage the processor.
Unpack the new processor, being careful not to bend any of the processor pins.
NOTE: You must position the processor correctly in the socket to avoid permanent damage to the processor and the computer when you turn on the computer.
If the release lever on the socket is not fully extended, move it to that position.
Align the pin-1 corners of the processor and socket.
1
socket and processor pin-1 indicator
2
processor
3
release lever
4
processor socket
NOTICE: To avoid damage, ensure that the processor aligns properly with the socket, and do not use excessive force when you install the processor.
Set the processor lightly in the socket and ensure that the processor is positioned correctly.
While lightly pressing down on the processor, rotate the release lever back toward the system
board until it snaps into place, securing the processor.
Clean the thermal grease from the bottom of the heat sink.
NOTICE: Ensure that you apply new thermal grease. New thermal grease is critical for ensuring adequate thermal bonding, which is a requirement for optimal processor operation.
Apply the new thermal grease to the top of the processor.
NOTICE: Ensure that the CPU and audio cables are not routed so that they are pinched when the heat sink assembly is installed.
Install the heat sink assembly:
Place the heat sink assembly back onto the heat-sink assembly bracket.
Rotate the heat sink assembly down towards the computer base and ensure that the two
captive screws are properly aligned with the holes in the system board.
Tighten the two captive screws.
NOTICE: Ensure that the heat sink assembly is correctly seated and secure.
