Installing System Components 163

Replacing the Power Distribution Board

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.
1
Unpack the new power distribution board assembly.
2
Align the tabs on the board with the slots on the chassis.
3
Press the board into the connector until it is fully seated.
4
Install the cooling fan assembly. See "Installing the Cooling Fan Assembly"
on page120.
5
Install the memory risers. See "Installing a Memory Riser" on page101.
6
If applicable, install the memory-riser blanks. See "Installing a Memory-
Riser Blank" on page 100.
7
Close the system. See "Closing the System" on page90.
8
Install the power supplies in the system. See "Installing a Power Supply" on
page156.
9
Reconnect the system to its electrical outlet and turn the system on,
including any attached peripherals.
Control Panel Assembly

Removing the Control Panel Display Module

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.
1
If installed, remove the front bezel. See "Removing the Front Bezel" on
page87.
2
Turn off the system and attached peripherals, and disconnect the system
from the electrical outlet.
book.book Page 163 Wednesday, January 20, 2010 10:20 AM