Dell Precision T7400 (Late 2007) - Manual (Page 271)

Adding and Replacing Parts 271
NOTICE: To connect a network cable, first plug the cable in to the network port or
device and then plug it in to the computer.
14 Connect your computer and devices to their electrical outlets, and turn
them on.
See the documentation that came with the drive for instructions on
installing any software required for drive operation.
15 Enter system setup (see "System Setup" on page 75) and select the
appropriate Drive option.
16 Verify that your computer works correctly by running the Dell Diagnostics
(see "Dell Diagnostics" on page 123).
System Board
CAUTION: Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.
CAUTION: To guard against electrical shock, always unplug your computer from
the electrical outlet before opening the cover.
NOTICE: To prevent static damage to components inside your computer, discharge
static electricity from your body before you touch any of your computer’s electronic
components. You can do so by touching an unpainted metal surface on the
computer.
NOTICE: The system board and metal tray are connected and are removed as one
piece.
Removing the System Board
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.