Dell XPS 8900 - Removing the Power-Supply Unit; Prerequisites; Procedure

Removing 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
www.dell.com/
regulatory_compliance.
Prerequisites
Remove the computer cover.
Procedure
1 Disconnect the DC power cables from the system board, hard drives, and optical
drives.
For more information, see “System-board components”.
2 Remove the screws that secure the power-supply unit to the chassis.
3 While pressing and holding the power-supply clamps, slide the power-supply unit
to release the power-supply unit from the power-supply clamps.
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