CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.
If you are replacing a hard drive that contains data you want to keep,
back up your files before you begin this procedure.
Shut down the computer through the Start menu.
Ensure that your computer and attached devices are turned off. If your
computer and attached devices did not automatically turn off when
you shut down your computer, turn them off now.
NOTICE: To disconnect a network cable, first unplug the cable from your
computer and then unplug it from the network wall jack.
Disconnect any telephone or telecommunication lines from the
computer.
Disconnect your computer and all attached devices from electrical
outlets, and then press the power button to ground the system board.
If you have installed a padlock through the padlock ring on the back
panel, remove the padlock.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
NOTICE: Before touching anything inside your computer, ground yourself by
touching an unpainted metal surface, such as the metal at the back of the
computer. While you work, periodically touch an unpainted metal surface to
dissipate any static electricity that could harm internal components.
Disconnect the cooling fan power cable from the FAN connector on
the system board.
Disconnect the power cable from the POWER connector on the
system board.
Lift up the airflow shroud.
Remove the microprocessor heat sink:
For each of the metal securing 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.
1
securing clips (2)
2
latch (2)
3
heat sink
4
microprocessor socket
5
retention base
NOTICE: Lay the heat sink down with the thermal grease facing upward.
NOTICE: If you are installing a microprocessor upgrade kit from Dell,
discard the original heat sink. If you are not installing a microprocessor
upgrade kit from Dell, reuse the original heat sink and blower when you install
your new microprocessor.
Pull the release lever straight up until the microprocessor is released.
NOTICE: Be careful not to bend any of the pins when you remove the
microprocessor from the socket. Bending the pins can permanently damage the
microprocessor.
1
release lever
2
microprocessor
3
socket
Remove the microprocessor from the socket.
Leave the release lever extended in the release position so that the socket is ready for the new microprocessor.
NOTICE: You must position the microprocessor correctly in the socket to
avoid permanent damage to the microprocessor and the computer.
If the release lever is not extended to the release position, move it to
that position.
Align pin-1 (the imprinted corner) of the microprocessor and pin-1 of
the socket.
1
pin-1 corners of microprocessor and socket aligned
NOTICE: Microprocessor pins are delicate. To avoid damage, ensure that the
microprocessor aligns properly with the socket, and do not use excessive force
when you install the processor.
Carefully set the microprocessor in the socket and press it down lightly
to seat it.
Rotate the release lever back toward the system board until it snaps
into place, securing the microprocessor.
Place the heat sink in the base.
To replace the securing clips:
Fit the end of the clip that does not have a latch over a tab on the
retention base.
Fit the middle of the clip over the middle tab on the retention
base.
Press down the clip's latch so it fits over the tab and secures the
clip to the retention base.
Lower the airflow shroud over the heat sink.
If you installed a microprocessor replacement kit from Dell, return the original heat sink assembly and microprocessor to Dell in the same package in which your replacement kit was sent.
Reconnect the cooling fan power cable to the FAN connector on the
system board.
Reconnect the power cable to the 12VPOWER connector on the
system board.
