NOTICE: Before disconnecting a device from the computer, wait 10 to 20
seconds after disconnecting the computer from its electrical outlet. Before
removing a component from the system board, verify that the standby power
light on the system board has turned off. To locate this light, see "System Board
Components" or the interior service label.
Turn off the computer and devices, disconnect them from their
electrical outlets, and wait 10 to 20 seconds.
If you have installed a padlock through the padlock ring on the back
panel, remove the padlock.
Lay the computer on its right side.
Open the computer cover:
Slide the cover release latch toward the top of the computer (see
the following figure).
Raise the back of the cover, and pivot it toward the front of the
computer.
Check all cable connections, especially those that might have come
loose during your work. Fold cables out of the way so that they do not
obstruct the computer cover.
Ensure that no tools or extra parts (including screws) are left inside the
computer.
Close the computer cover by pivoting the cover down toward the back
of the chassis and into position. Ensure that the release latch clicks
into place (see the following figure).
NOTE: As you close the cover, hold the release latch to the left, in its
open position, and then slide the release latch to the right to latch the
cover to the chassis.
Closing the Computer Cover
Stand the computer upright.
If you are using a padlock to secure your computer, install the padlock.
