CAUTION: 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.
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 their
electrical outlets, and then press the power button to ground the
system board.
Remove the computer from the mounting plate (if used).
Remove the cable cover (if used).
Remove the stand (if used).
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
Remove the computer 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 two fan power cables from the FAN1 and FAN2
connectors on the system board.
Remove the fan shroud by pressing the thumb indentations and
sliding the shroud forward, detaching the shroud from the four tabs
(see the illustration). Lift the fan shroud up and away from the
computer.
1
thumb indentations
2
fan power cables (2)
3
chip set heat sink (do not remove)
CAUTION: The heat sink can get extremely hot. Be sure the heat sink has had sufficient time to cool before you touch it.
Remove the heat sink.
Remove the two securing brackets, if present, by pressing the tabs
together and lifting the brackets up.
1
tabs (two on each securing bracket)
2
securing brackets (2)
Remove the memory module (see "Removing Memory") closest to
the heat sink.
Press the lever on the retention base until the heat sink is released.
1
heat sink
2
retention base
3
lever
Gently lift the heat sink from the microprocessor.
NOTICE: Lay the heat sink down with the thermal material facing upward.
NOTICE: Be careful not to bend any of the pins when you remove the
microprocessor. Bending the pins can permanently damage the microprocessor.
Pull the release lever straight up until the microprocessor is released,
and then remove the microprocessor from the socket.
1
release lever
2
microprocessor
3
socket
NOTICE: Ground yourself by touching an unpainted metal surface on the
back of the computer.
NOTICE: Be careful not to bend any of the pins when you unpack the
microprocessor. Bending the pins can permanently damage the microprocessor.
Unpack the new microprocessor.
If any of the pins on the microprocessor appear to be bent, contact Dell (see "Getting Help") for instructions on obtaining technical assistance.
1
pin-1 corners of microprocessor and socket aligned
NOTICE: You must position the microprocessor correctly in the socket to
avoid permanent damage to the microprocessor 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 microprocessor and socket.
NOTICE: When you place the microprocessor in the socket, ensure that all of
the pins fit into the corresponding holes on the socket. Be careful not to bend
the pins.
Set the microprocessor lightly in the socket and ensure that all pins are
headed into the correct holes. Do not use force, which could bend the
pins if the microprocessor is misaligned. When the microprocessor is
positioned correctly, press it with minimal pressure to seat it.
When the microprocessor is fully seated in the socket, pivot the release
lever back toward the socket until it snaps into place to secure the
microprocessor.
NOTICE: Ground yourself by touching an unpainted metal surface on the
back of the computer.
If you are installing a microprocessor replacement kit from Dell, return the microprocessor to Dell in the same package in which your replacement kit was sent.
Place one end of the heat sink under the tab on the retention base on
the side opposite the lever (see the illustration). Lower the heat sink
onto the microprocessor so that the heat sink fits securely under the
tab on the other end of the retention base.
1
securing brackets (2)
2
heat sink
3
retention base
4
lever
If you removed securing brackets in step a, replace the securing
brackets that you removed.
Plug the two fan cables into the FAN1 and FAN2 connectors on the
system board.
Replace the computer cover.
Reattach the stand (if used).
Attach the computer to the mounting plate (if used).
Replace the cable cover (if used).
NOTICE: To connect a network cable, first plug the cable into the network
wall jack, and then plug it into the computer.
Connect your computer to the adapter cable and devices to electrical
outlets, and turn them on.
After you replace the cover, the chassis intrusion detector, if enabled, causes the following message to appear on the screen at the next computer start-up:
NOTE: If a setup password has been assigned by someone else, contact
your network administrator for information on resetting the chassis
intrusion detector.
