Replacing The System Board; Removing The Power Supply - Dell Dimension 5100 Service Manual

1 mounting-bracket screws (2)
2 system-board screws (8)
11. Place the system board assembly that you just removed next to the replacement system board to ensure that it is identical.

Replacing the System Board

1. Gently align the system board in the chassis and slide the board toward the back of the computer.
2. Replace the eight system-board screws and the two mounting-bracket screws.
3. Replace any components and cables that you removed from the system board.
4. Reconnect all cables to their connectors at the back of the computer.
5. Replace the computer cover.
NOTICE: To connect a network cable, first plug the cable into the network port or device, and then plug the cable into the computer.
6. Connect your computer and devices to electrical outlets, and turn them on.
Power Supply
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your
computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.

Removing the Power Supply

1. Follow the procedures in "Before You
2. Remove the computer cover.
3. Disconnect the DC power cables from the system board and the drives.
Begin."