156 Microprocessor Airflow Shroud
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CAUTION: Before you perform this procedure, follow the safety instructions in
the
System Information Guide
.
1
Shut down the computer through the Start menu.
2 Ensure that your computer and attached devices are turned off. If your computer and
attached devices did not automatically turn off when you shut down your computer,
turn them off now.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then
unplug it from the network wall jack.
3 Disconnect any telephone or telecommunication lines from the computer.
4 Disconnect your computer and all attached devices from electrical outlets, and then
press the power button to ground the system board.
5 If you have installed a padlock through the padlock ring on the back panel, remove the
padlock.
CAUTION: To guard against electrical shock, always unplug your computer from
the electrical outlet before opening the cover.
NOTICE: Before touching anything inside your computer, ground yourself by touching an
unpainted metal surface, such as the metal at the back of the computer. While you work,
periodically touch an unpainted metal surface to dissipate any static electricity that could harm
internal components.
6
Open the computer cover.
Removing the Microprocessor Airflow Shroud
CAUTION: Before you perform this procedure, follow the safety instructions in
the
System Information Guide
.
NOTICE: To avoid damaging the fan power cables, do not slide the shroud too quickly.
1
Press the shroud release lever towards the front of the computer.
2 Lift the shroud up to disengage the anchors.
3 Once the shroud has been disengaged from the anchors, unplug the fan cables from
their connectors on the system board.
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