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System board
NOTE: The system board spare kit includes replacement thermal material.
Description Spare part number
For use with computer models equipped with discrete graphics subsystem memory 511864-001
For use with computer models equipped with UMA graphics subsystem memory 511863-001
For use with computer models equipped with ATI Mobility Radeon HD4650 graphics with 1-GB
memory
518431-001
For use with computer models equipped with ATI Mobility Radeon HD4530 graphics with 512-MB
memory
518432-001
For use with computer models equipped with UMA graphics and GM47 chipset 518433-001
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 54).
5. Remove the following components:
a. Hard drive (see
Hard drive on page 63)
b. Optical drive (see
Optical drive on page 57)
c. Switch cover (see
Switch cover and keyboard on page 70)
d. Display assembly (see
Display assembly on page 75)
e. Top cover (see
Top cover on page 85)
When replacing the system board, be sure that the following components are removed from the defective
system board and installed on the replacement system board:
●
TV tuner module (see
TV tuner module on page 61)
●
RTC battery (see
RTC battery on page 62)
●
Memory module (see
Memory module on page 59)
●
WLAN module (see
Bluetooth module on page 88)
●
Modem module (see
WLAN module on page 66)
●
Fan/heat sink assembly (see
Fan/heat sink assembly on page 99)
●
Processor (see
Processor on page 101)
Remove the system board:
Component replacement procedures 95