System board
NOTE: All system board spare part kits include the ExpressCard assembly.
NOTE: All system board spare part kits include replacement thermal material.
Description Spare part number
For use only with computer models equipped with AMD processors 497613-001
For use only with computer models equipped with Intel processors with UMA graphics subsystem
and a GM45 system board
501354-001
For use only with computer models equipped with Intel processors with UMA graphics subsystem
and a GL40 system board
491250-001
For use only with computer models equipped with Intel processors (includes 128-MB DDR2 discrete
graphics system memory)
491977-001
For use only with computer models equipped with Intel processors (includes 256-MB DDR2 discrete
graphics system memory)
491976-001
Before removing the system board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 46).
5. Remove the following components:
a. Hard drive (see
Hard drive on page 47)
b. Optical drive (see
Optical drive on page 55)
c. Keyboard (see
Switch cover and keyboard on page 57)
d. Switch cover (see
Switch cover and keyboard on page 57)
e. Speakers (see
Speakers on page 61)
f. Display assembly (see
Display assembly on page 62)
g. Top cover (see
Top cover on page 68)
h. USB connector module (see
USB connector module on page 72)
i. Bluetooth module (see
Bluetooth module on page 73)
j. Fan (see
Fan on page 77)
k. RTC battery (see
RTC battery on page 75)
Component replacement procedures 79