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System Board
DellPrecision™WorkStation340ServiceManual
Removing the System Board
1. Write down your BIOS settings before you turn off your computer.
See the User's Guide that came with your computer for instructions to find your BIOS settings.
2. Turn off the computer and devices, disconnect them from their electrical outlets, wait at least 10 to 20 seconds, lay the computer on its side, and open
the computer cover.
3. Remove any components that restrict access to the system board.
4. Disconnect all cables from the system board.
5. Before you remove the existing system board, visually compare the replacement system board to the existing system board to make sure that you have
the correct part.
6. Pull up on the tab and slide the system board toward the front of the computer; lift it up and away.
Removing the System Board
7. Place the system board that you just removed next to the replacement system board.
Replacing the System Board
1. Transfer components from the existing system board to the replacement system board.
2. Remove the memory modules and install them on the replacement board.
3. Remove the cooling fan/heat sink assembly and microprocessor from the existing system board and transfer them to the replacement system board.
4. Configure the settings of the replacement system board.
5. Set the jumpers on the replacement system board they are identical to the one on the existing board.
CAUTION: Before you perform this procedure, see "Safety First—For You and Your Computer."
NOTICE: Before disconnecting a device from the computer or removing a component from the system board, verify that the standby power light on the
system board has turned off. To locate this light, see "System Board Components."
CAUTION: Before you remove any component from the system board, read the steps in "Safety First—For You and Your Computer."
NOTE: The system board and metal tray are attached and are removed as one piece.
CAUTION: The microprocessor package and heat sink assembly can get hot. To avoid burns, be sure that the package and assembly have had
sufficient time to cool before you touch them.
NOTE: Some components and connectors on the replacement system board may be in different locations than the corresponding connectors on the
existing system board.