Maintenance and Service Guide

System board
To remove the system board you must rst remove the stand bracket and plastic piece. You must also remove
the metal I/O bracket on the side of the system board.
To remove the system board:
1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 16).
2. Remove the base unit rear and front access panels (see Base unit access covers on page 17).
3. Move the fans aside (see Fans on page 27). You do not have to disconnect the fans from the computer to
remove the system board.
4. Remove the memory modules (see Memory on page 22).
5. Remove the WLAN module (see WLAN module on page 33).
6. Remove the heat sink (see Heat sink on page 36).
7. Remove the processor (see Processor on page 38).
8. Disconnect the hard drive cable from the system board.
9. Remove the two Torx screws (1) that secure the display stand bracket to the computer, and then lift the
bracket out of the computer (2).
System board 41