Dell Precision 350: Microprocessor
Microprocessor : Dell Precision 350
Back to Contents Page
Microprocessor
DellPrecision™Workstation350ServiceManual
Removing the Microprocessor
1. Disconnect the cooling fan power cable from the FAN connector on the system board.
2. Disconnect the power cable from the 12VPOWER connector on the system board.
3. Lift up the airflow shroud.
4. Remove the microprocessor heat sink:
a. 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.
b. Lift the heat sink away from the microprocessor.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.
5. Pull the release lever straight up until the microprocessor is released.
6. Remove the microprocessor from the socket.
1
securing clip (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.
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
Leave the release lever extended in the release position so that the socket is ready for the new microprocessor.
Installing the Microprocessor
1. If the release lever is not extended to the release position, move it to that position.
2. Align pin-1 (the imprinted corner) of the microprocessor and pin-1 of the socket.
3. Carefully set the microprocessor in the socket and press it down lightly to seat it.
4. Rotate the release lever back toward the system board until it snaps into place, securing the microprocessor.
5. Place the heat sink in the base.
6. To replace the securing clips:
a. Fit the end of the clip that does not have a latch over a tab on the retention base.
b. Fit the middle of the clip over the middle tab on the retention base.
c. Press down the clip's latch so it fits over the tab and secures the clip to the retention base.
7. 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.
8. Reconnect the cooling fan power cable to the FAN connector on the system board.
9. Reconnect the power cable to the 12VPOWER connector on the system board.
10. Close the computer cover.
11. Connect your computer and devices to electrical outlets, and turn them on.
Back to Contents Page
NOTICE: You must position the microprocessor correctly in the socket to avoid permanent damage to the microprocessor and the computer.
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.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
