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Installing System Components | 121
Power Distribution Boards
Removing a 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.
NOTE:
This system has two power distribution boards. The procedure to remove
and install both the power distribution boards is similar. To access the second
power distribution board at the bottom, remove the power distribution board at
the top.
1 Turn off the system, including any attached peripherals, and
disconnect the system from its electrical outlet.
2 Open the system. See "Opening the System" on page 117.
3 Remove the power supply. See "Removing and Installing a Power
Supply" on page 85.
4 Disconnect all the cables from the first power distribution board. See
Figure 5-12.
Note the routing of the cable underneath the tabs on the chassis as you
remove them from the system. You must route these cables properly
when you replace them to prevent the cables from being pinched or
crimped.
5 Remove the screws securing the first power distribution board to the
system. See Figure 3-24.
6 Lift the power distribution board out of the system. See Figure 3-24.
NOTE:
To remove the second power distribution board that is below the first
power distribution board, remove the power distribution board connector
and angle the board before lifting.