CAUTION: The microprocessor and heat sink assembly can get extremely hot. To avoid burns, be sure both have had sufficient time to cool before you touch them.
Disconnect the fan cable from the system board.
Disconnect the 12-volt power cable from the system board.
On the small mini-tower computer, rotate the airflow shroud.
Airflow Shroud Rotation—Small Mini-Tower Computer
1
Airflow shroud
On the small mini-tower computer, press down on the metal securing
latches to release the securing clips from the retention base. Then lift
the clips out of the tabs on the retention base and away from the heat
sink.
Heat Sink Removal—Small Mini-Tower Computer
1
Securing latches (2)
4
Retention base
2
Securing clips (2)
5
ZIF socket
3
Heat sink
6
Tabs (3)
On the small form-factor and small desktop computers, remove the
securing clips to remove the heat sink/blower assembly.
The heat sink is attached to the blower.
Heat Sink/Blower Assembly Removal—Small Form-Factor and Small Desktop Computers
1
Latches (2)
4
Screws (2)
2
Securing clips (2)
5
Heat sink
3
Blower
6
Retention base
NOTICE: Before you remove the heat sink, gently rock the heat sink, and then
slightly twist it as you lift it from the system board.
Lift the heat sink or heat sink/blower assembly away from the
microprocessor.
On the small form-factor and small desktop computers, remove the
two screws on the blower to remove it from the heat sink.
NOTICE: Do not discard the original heat sink and securing clips unless you
are installing a microprocessor upgrade kit from Dell. If you are not installing
a microprocessor upgrade kit from Dell, reuse the original heat sink, blower,
and securing clips when installing your new microprocessor.
NOTICE: 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.
Discard the original heat sink and securing clips.
Microprocessor Removal
1
Release lever
2
Microprocessor
3
ZIF socket
NOTICE: Be careful not to bend any of the pins when you remove the
microprocessor from the ZIF socket. Bending the pins can permanently
damage the microprocessor.
The ZIF socket has a lever-type handle that secures and releases the microprocessor from the ZIF socket.
Pull the socket release lever straight up until the microprocessor
releases.
Remove the microprocessor from the socket.
Leave the release lever extended so that the socket is ready for the new
microprocessor.
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.
Align pin-1 (the beveled corner) of the microprocessor with the pin-1
corner of the socket.
NOTE: You must identify the pin-1 corner to correctly position the
microprocessor.
Microprocessor Installation
1
Pin-1 corners of microprocessor and socket aligned
NOTICE: You must position the microprocessor correctly in the ZIF socket to
avoid permanent damage to the microprocessor and the computer when you
turn on the computer.
Set the microprocessor lightly in the socket and make sure all pins are
headed into the correct holes. Because your computer uses a ZIF
socket, there is no need to 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, securing the
microprocessor.
NOTICE: 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.
NOTICE: If you are not installing a microprocessor upgrade kit from Dell,
reuse the original blower/heat sink assembly and securing clips when replacing
the microprocessor.
Remove the film covering the bottom of the heat sink.
On the small form-factor and small desktop computers, reinstall the
two screws that attach the blower to the heat sink.
Lower the heat sink or blower/heat sink assembly to the
microprocessor so that the heat sink fits in the retention base.
Fit the end of each securing clip that does not have the latch over its
tab on the retention base. Then, fit the middle of the clip over the
middle tab on the retention base, and press down on the clip's latch to
secure the clip to the retention base.
On the small mini-tower computer, rotate the airflow shroud back over
the heat sink.
Plug the fan cable into its connector on the system board.
Plug the 12-volt power cable into its connector on the system board.
Close the computer cover, reconnect your computer and devices to
their electrical outlets, and turn them on.
As the computer boots, it detects the presence of the new microprocessor and automatically changes the configuration information in system setup.
NOTE: After you open and close the cover, the chassis intrusion detector
causes the following message to be displayed at the next system start-up:
ALERT! Cover was previously removed.
Enter system setup and confirm that the system data area correctly
identifies the type of installed microprocessor.
For instructions on using system setup, see the User's Guide.
While in system setup, reset the Chassis Intrusion option by pressing
the left- or right-arrow key to select Reset and then choosing Enabled,
Enabled-Silent, or Disabled.
See the User's Guide for information on the chassis intrusion detector.
NOTE: If a setup
password has been
assigned by someone else,
contact the network
administrator for
information on resetting
the chassis intrusion
detector.
Run the Dell Diagnostics to verify that the new processor is operating
correctly.
See the User's Guide for information on Dell Diagnostics.
