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56 Removing and Replacing Parts
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13 Pull the right side of bottom case assembly, next to the external
headphone and microphone connectors, away from the system board
assembly as you simultaneously lift the front of the system board
assembly out and away from the bottom case assembly.
Replacing the System Board
1 Install the microprocessor on the replacement system board.
2 Connect the right and left speaker to the replacement system board.
3 Install the replacement system board.
a Insert the external microphone and headphone connectors
through the plastic bottom case assembly.
b Replace the nine M2.5 x 5-mm screws, starting on the right side of
the bottom case assembly.
c Replace the fan guard cover, inserting the tab into the bottom case
assembly and replace the three M2.5 x 5-mm screws (see
“Removing the System Board Assembly Screws”). If you replace
the screw opposite the tab first, it makes it easier to insert and
replace the other two screws.
4 Replace the memory modules, mini-PCI card, speaker assemblies, and
the thermal cooling assembly removed from the old system board.
NOTE: Be sure to route cables so that they will not be crimped or pinched
when the complete assembly is put back together.
5
Replace the palmrest assembly, the display assembly, the keyboard
assembly, and the hard drive.
6 Replace the modular bay devices and any PC Cards or plastic blanks in
the PC Card slot.
7 Insert the diskette or CD that accompanied the replacement system
board assembly into the appropriate drive, and turn on the computer.
Follow the instructions on the screen.
NOTE: After replacing the system board assembly, be sure to enter the
system’s service tag number into the BIOS of the replacement system
board assembly.