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Installing System Components 47
optional diskette drive. A controller expansion card is required for SAS hard
drives. Power is supplied to the system board and internal peripherals through
a single nonredundant power supply.
Opening the System
CAUTION: Only trained service technicians are authorized to remove the system
cover and access any of the components inside the system. Before performing any
procedure, see your Product Information Guide for complete information about
safety precautions, working inside the computer and protecting against
electrostatic discharge.
1
Turn off the system and attached peripherals, and disconnect the system
from the electrical outlet.
2
Press the power button to ground the system board.
3
Lay the system on its side as shown in Figure 3-2.
4
Open the system by sliding the cover release tab toward the rear of the
system and lifting the cover off. See Figure 3-2.
Closing the System
1
Ensure that all internal cables are connected and folded out of the way.
2
Ensure that no tools or extra parts are left inside the system.
3
Reinstall the system cover:
a
Insert the bottom edge of the cover into the bottom of the system
chassis. See Figure 3-2.
b
Press down on the cover until the cover release tab snaps into place.
4
Reconnect the system to the electrical outlet, and turn on the system and
attached peripherals.
After you open and close the cover, the chassis intrusion detector, if
enabled, causes the following message to appear on the screen at the next
system start-up:
Alert! Cover was previously opened.
book.book Page 47 Wednesday, April 15, 2009 8:47 PM