Replacing the Power-Supply Unit

1Slide the power-supply unit toward the back of the chassis.

2Align the screw holes on the power-supply unit with the screw holes on the chassis.

3Replace the screws that secure the power-supply unit to the chassis.

1Replace the system board. See "Replacing the System Board" on page 71.

2Replace the processor. See "Replacing the Processor" on page 64.

3Replace the processor fan and heat-sink assembly. See "Replacing the Processor Fan and Heat-Sink Assembly" on page 61.

4Replace any PCI-Express cards, if applicable. See "Replacing the PCI- Express Cards" on page 27.

5Replace the Mini-Card, if applicable. See "Replacing the Mini-Card" on page 31.

6Replace the memory-module(s). See "Replacing Memory Module(s)" on page 23.

7Replace the drive cage. See "Replacing the Drive Cage" on page 39.

8Replace the fan shroud. See "Replacing the Fan Shroud" on page 20.

9Replace the computer cover. See "Replacing the Computer Cover" on page 18.

10Follow the instructions in "After Working Inside Your Computer" on page 11.

Power-Supply Unit

Dell 660S manual Replacing the Power-Supply Unit