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System Board
1. Prepare the computer for disassembly (Preparation for Disassembly on page 74).
2. Remove the access panel (
Access Panel on page 75).
3. Remove all expansion boards (
Expansion Cards on page 83).
4. Disconnect all cables connected to the system board, noting their location for reinstallation.
5. Remove the heat sink (
Heat sink on page 107).
6. Remove the eight screws that secure the system board to the chassis.
7. Slide the system board toward the front of the computer to disengage the I/O panel from the rear
of the chassis.
8. Lift the system board out of the computer.
When reinstalling the system board, first insert the I/O panel back into the slots in the rear of the chassis,
and then align the board with the chassis screw holes.
NOTE: When replacing the system board, you must change the chassis serial number in the BIOS.
112 Chapter 8 Removal and Replacement Procedures Microtower (MT) Chassis