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Replacing the Power-Supply
Unit
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before Working Inside Your Computer. After working inside your
computer, follow the instructions in After Working Inside Your
Computer. For more safety best practices, see the Regulatory
Compliance home page at dell.com/regulatory_compliance.
Procedure
1 Place the power-supply unit on the display-panel base and slide it into
position.
2 Align the screw hole and tabs on the power-supply unit with the screw
hole and tabs on the display-panel base.
3 Replace the screw that secures the power-supply unit to the display-
panel base.
4 Connect the power-supply fan cable to the power-supply unit.
5 Route the power-port cable through the routing guides on the display-
panel base.
6 Route the main power cable, processor power cable and power-supply
fan cable through the routing guides on the display-panel base.
7 Connect the main power cable, processor power cable and power-
supply fan cable to the system board.
Post-requisites
1 Replace the I/O bracket.
2 Replace the power-supply diagnostic board.
3 Replace the VESA-mount bracket.
4 Replace the system-board shield.
5 Replace the back cover.
6 Replace the stand assembly.
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