Dell Dimension 8400 Service Manual

Also see for Dimension 8400 Series: Setup Quick reference guide Manual

9. Connect your computer and devices to electrical outlets, and turn them on.Power SupplyRemoving the Power Supply1. Follow the procedures in "Before You Begin."2. Disconnect the DC power cables from the system board and the drives.Note the routing of the DC power cables underneath the tabs in the computer frame as you remove them from the system board and drives. You mustroute these cables properly when you replace them to prevent their being pinched or crimped.3. Remove the two screws that attach the power supply to the back of the computer frame.4. Press the release button located on the floor of the computer frame.5. Slide the power supply toward the front of the computer approximately 1 inch.6. Lift the power supply up and out of the computer.Replacing the Power Supply1. Slide the power supply into place.2. Replace the two screws that secure the power supply to the back of the computer frame.3. Reconnect the DC power cables.4. Connect the AC power cable to the connector.5. Run the cables underneath the clips, and press the clips to close them over the cables.6. Close the computer cover.NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of yourcomputer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.