5. Before you remove the existing system board, visually compare the replacement system board to the existing board to ensure that you have the correct
part.
6. Remove the six screws that secure the system board to the bottom of the computer.
7. Slide the system board assembly toward the front of the computer, and then carefully lift the system board up and out of the computer.
8. 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 into the chassis and slide it toward the back of the computer.
2. Replace the six screws to secure the system board to the computer.
3. Transfer components from the existing system board to the replacement system board:
a. Remove the memory modules and install them on the replacement system board (see Memory).
b. Remove the heat sink assembly (see Removing the Heat Sink Assembly) and processor package (see Removing the Processor) from the existing
system board and transfer them to the replacement system board.
c. Remove the modem from the existing system board and transfer it to the replacement system board (see Modem).
4. Replace any components and cables that you removed from the original system board.
5. Reconnect all cables to their connectors at the back of the computer.
6. Replace the computer cover (see Replacing the Computer Cover).
7. Connect your computer and devices to electrical outlets, and then turn them on.
8. Set the jumpers on the replacement system board so that they are identical to the ones on the existing system board (see Jumper Settings).
CAUTION: The heat sink assembly and processor package can get hot. To avoid burns, ensure that the assembly and package have had sufficient
time to cool before you touch them.
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