Manual

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.