122
Installing System Components
Power Distribution Board
The power distribution board is located on your system directly behind the
power supply fan module. See Figure 3-25.
Removing the Power Distribution Board
CAUTION:
Many repairs may only be done by a certified service technician.
You should only perform troubleshooting and simple repairs as authorized in
your product documentation, or as directed by the online or telephone service
and support 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
with the product.
1
If applicable, remove the internal hard drive bay and support carrier. See
"Removing an Internal Hard Drive Bay" on page 73.
2
If applicable, remove the thumb screw on the support bracket and lift it up
and out of the system.
3
Remove the power supplies from the system. See "Removing a Redundant
Power Supply" on page 80.
4
Remove the expansion cards. See "Removing an Expansion Card" on
page 94.
5
Remove the expansion card riser. See "Removing an Expansion-Card Riser"
on page 95.
6
Disconnect power distribution cables from the system board (see "System
Board" on page 125).
7
Disconnect the fan cable.
8
Remove the screws securing the power distribution board to the chassis.
See Figure 3-25.
9
Pull the blue tab, lift the power distribution board, and move it toward the
front of the system to disengage from the tabs on the power supply bay.
See Figure 3-25.
book.book Page 122 Wednesday, March 3, 2010 10:37 AM
