Dell Precision T7400 (Late 2007) - Manual (Page 154)

154 Adding and Replacing Parts
10 Replace the memory shroud and the memory fan. Tighten the
thumbscrews until the memory shroud is well secured and will not shift
when the computer is moved.
11 Ensure that all connectors are properly cabled and firmly seated.
12 Replace the computer cover (see "Replacing the Computer Cover" on
page 145).
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 139.
CAUTION: Your computer is heavy (it has an approximate minimum weight of 55
lbs) and can be difficult to maneuver. Seek assistance before attempting to lift,
move, or tilt it; this computer requires a two-man lift. Always lift correctly to avoid
injury; avoid bending over while lifting. See your
Product Information Guide for
other important safety information.
CAUTION: The computer stand should be installed at all times to ensure
maximum system stability. Failure to install the stand could result in the computer
tipping over, potentially resulting in bodily injury or damage to the computer.
2 Remove the computer cover (see "Removing the Computer Cover" on
page 141).
3 Loosen the captive thumbscrews that secure the memory shroud and lift it
away from the computer.