6Connect the chassis fan cable to the system board (see "System Board Components" on page 107).

7Replace the computer cover (see "Replacing the Computer Cover" on page 165).

System Board

Removing the System Board

CAUTION: To guard against electrical shock, laceration by moving fan blades, or other unexpected injuries, always unplug your computer from the electrical outlet before opening the cover.

CAUTION: The heat sink assembly, power supply, and other components may be very hot during normal operation. Be sure that they have had sufficient time to cool before you touch them.

NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted metal surface to dissipate any static electricity that could harm internal components.

1Follow the procedures in "Before You Begin" on page 101.

2Remove the computer cover (see "Removing the Computer Cover" on page 103).

3Remove any add-in cards on the system board (see "Removing a PCI/PCI Express Card" on page 121).

4Remove the processor and the heat sink assembly (see "Removing the Processor" on page 148).

5Remove the memory modules (see "Removing Memory" on page 115) and document which memory module is removed from each memory socket so that the memory modules can be installed in the same location after the board is replaced.

6Disconnect all cables from the system board. Note the routing of all cables as you remove them so that you can re-route them correctly after installing the new system board.

7Remove the eight screws from the system board.

8Lift the system board up and out.

162

Removing and Installing Parts

Page 162
Image 162
Dell 531S owner manual Removing the System Board