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136 Adding and Replacing Parts
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The system board’s BIOS chip contains the Service Tag, which is also visible on a barcode label
on the bottom of the computer. The replacement kit for the system board includes a CD that
provides a utility for transferring the Service Tag to the replacement system board.
NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any
installed batteries.
1
Remove the keyboard (see page 114).
2
Remove the display (see page 124).
3 Remove the palm rest (see page 130).
4 Remove the video card (see page 128).
5 Remove the processor thermal-cooling assembly (see page 129).
6 Remove the processor (see page 132).
7 Turn the system over and remove the two M2.5 x 6-mm screws from the system-board
bottom assembly.
M2.5 x 6-mm screws (2)
system-board bottom assembly