92 Installing System Components

Removing the Power Supply Blank

CAUTION: To ensure proper system cooling, the power supply blank must be
installed in power supply bay PS2 in a non-redundant configuration. Remove the
power supply blank only if you are installing a second power supply.
To remove the power supply blank, remove the screw and pull outward on the
blank.

Installing the Power Supply Blank

NOTE: Install the power supply blank only in power supply bay 2.
Align the blank with the power supply bay and insert the blank into the
chassis until it clicks into place. Secure with screw.
Power Distribution Board
WARNING: Whenever you need to lift the system, get others to assist you.
Toavoid injury, do not attempt to lift the system by yourself.
CAUTION: Many repairs may only be done by a certified service technician.
Youshould only perform troubleshooting and simple repairs as authorized in
yourproduct documentation, or as directed by the online or telephone service
andsupport team. Damage due to servicing that is not authorized by Dell is not
covered by your warranty. Read and follow the safety instructions that came
withthe product.
The power distribution board comes as a power distribution board assembly
with two power distribution boards.

Removing the Power Distribution Board Assembly

1
Turn off the system, including any attached peripherals, and disconnect
the system from its electrical outlet.
2
Remove the system from the rack and place on a flat surface.
3
Remove the right side rail from the chassis.
4
Remove the two screws on the side of the chassis. See Figure3-20.
5
Open the system. See "Opening the System" on page 58.
6
Disconnect all the power cables from the power distribution board.
7
Remove the two screws that secure the power distribution board assembly
to the bottom of the chassis. See Figure3-20.
book.book Page 92 Monday, April 12, 2010 3:38 PM