NOTICE: Before disconnecting a device from the computer or removing a
component from the board, verify that the standby power light on the system
board has turned off. To locate this light, see "System Board Components."
Turn off the computer and devices, disconnect them from their
electrical outlets, wait at least 5 seconds, and then remove the
computer cover.
For each of the metal clips that secure the heat sink to the
microprocessor, press down on the clip's latch to release it from
the heat-sink retention base. Then lift the clip away from the heat
sink.
Lift the heat sink away from the microprocessor.
NOTE: If you are installing a microprocessor upgrade kit from Dell,
return the original heat sink assembly and microprocessor package to Dell
in the same package in which your upgrade kit was sent. Your
microprocessor upgrade kit should include a replacement microprocessor
heat sink and two replacement securing clips.
NOTE: The bottom of the heat sink is coated with thermal grease that
conducts heat from the microprocessor to the heat sink. Some of this
grease will remain on the microprocessor when you remove the heat sink.
NOTICE: While you are replacing the microprocessor, lay the heat sink down
with the thermal grease facing upward. Do not lay the heat sink down with the
thermal grease touching the work surface.
Removing the Microprocessor Heat Sink
Remove the microprocessor from its connector.
Your microprocessor uses a ZIF socket with a lever-type handle that secures or releases the microprocessor.
To remove the microprocessor, pull the socket lever straight up until the microprocessor is released. Then remove the microprocessor from the socket.
NOTICE: Do not reuse the old heat sink assembly when replacing the
microprocessor package. Doing so can cause the microprocessor to overheat
because of an inadequate amount of thermal compound between the heat sink
assembly and the microprocessor package.
Install the new microprocessor in the socket:
Remove the plastic cover that is attached to the bottom of the
new heat sink assembly.
Ensure that the lever on the microprocessor socket is fully
extended to the release position.
NOTICE: When you place the microprocessor in the socket, ensure that the
microprocessor aligns properly with the socket. You must position the
microprocessor correctly in the socket to avoid damage.
Align pin 1 of the new microprocessor with pin 1 of the socket.
NOTE: Pin 1 of the microprocessor is indicated by a small dot or a
triangle in one corner of the microprocessor. Pin 1 of the socket is
indicated by a small triangle in one corner of the socket. See "Replacing
the Microprocessor."
Carefully set the microprocessor in the socket and press it down
lightly to seat it.
Rotate the socket lever back toward the socket until it snaps into
place, securing the microprocessor.
Replacing the Microprocessor
Install the microprocessor heat sink:
NOTICE: If you are installing a microprocessor upgrade kit from Dell,
remove the plastic cover that is attached to the bottom of the new heat sink
before installing it.
Lower the heat sink to the microprocessor so that the heat sink fits
in the heat sink retention base.
For each of the replacement metal clips that secure the heat sink
to the microprocessor, fit the end of the clip that does not have the
latch to the heat sink retention base. Then, press down on the
clip's latch to secure the clip to the heat sink retention base (see
"Removing the Microprocessor Heat Sink").
Replace the airflow shroud.
Rotate the power supply back into position until the securing tab
snaps into the release latch.
Enter system setup, and confirm that the top line in the System Data
area correctly identifies the new microprocessor. Also, confirm that the
values under the CPU Information menu are correct for the new
microprocessor.
Exit system setup, and then run the Dell Diagnostics to verify that the
new microprocessor is operating properly.
