88 Installing System Components
Replacing a Processor CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the
components inside the system. See your Product Information Guide for complete information about safety
precautions, working inside the computer, and protecting against electrostatic discharge.
1
Prior to upgrading your system, download the latest system BIOS version on
support.dell.com
.
2
Turn off the system, including any attached peripherals, and disconnect the system from the electrical
outlet.
3Open the system. See
"Opening the System" on page48
.
4
Remove the fans from the center fan bracket. See "Removing and Installing a Fan" on page53.
5Remove the center fan bracket. See
"Removing the Center Fan Bracket" on page79.
NOTICE: When you remove the heat sink, the possibility exists that the processor might adhere to the heat sink
and be removed from the socket. It is recommended that you remove the heat sink while the processor is still
warm.
NOTICE: Never remove the heat sink from a processor unless you intend to remove the processor. The heat sink is
necessary to maintain proper thermal conditions.
6
P
ress the blue tab on the end of one of the heat-sink retention levers to disengage the lever, then lift
the lever 90 degrees. See
Figure3-23
.