Dell Precision T5400 (Late 2007) - Manual (Page 183)

Adding and Replacing Parts 183
Installing the Processor
NOTICE: Ground yourself by touching an unpainted metal surface on the back of
the computer.
NOTICE: When replacing the processor, do not touch any of the pins inside the
socket or allow any objects to fall on the pins in the socket.
1 Follow the procedures in "Before You Begin" on page 151.
2 Remove the computer cover (see "Removing the Computer Cover" on
page 153).
3 Rotate the hard-drive carrier out of the computer (see "Rotating the Hard
Drive Carrier Out of the Computer" on page 156).
4 Rotate the processor access door to its open position.
5 If you are replacing a processor, remove the processor (see "Removing the
Processor" on page 179).
6 Unpack the new processor, being careful not to touch the underside of the
processor.
NOTICE: You must position the processor correctly in the socket to avoid
permanent damage to the processor and the computer when you turn on the
computer.
7 Open the processor cover by sliding the release lever from under the center
cover latch on the socket. Ensure that the release lever is fully extended.