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System board
NOTE: The system board spare kit includes replacement thermal material.
Description Spare part number
System board with ATI Mobility Radeon HD 4650 discrete graphics subsystem and 1-GB of
dedicated memory
516294-001
System board with ATI Mobility Radeon HD 4650 discrete graphics subsystem and 1-GB of
dedicated memory
516293-001
System board with ATI Mobility Radeon HD 4530 discrete graphics subsystem and 512-MB of
dedicated memory
516292-001
System board with Intel GMA 4700MHD UMA graphics subsystem and shared memory 516291-001
System board bracket 516334-001
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 43).
5. Remove the following components:
a. Hard drive (see
Hard drive on page 48)
b. Optical drive (see
Optical drive on page 44)
c. Switch cover (see
Switch cover and keyboard on page 57)
d. Speaker assembly (see
Speaker assembly on page 62)
e. Display assembly (see
Display assembly on page 64)
f. Top cover (see
Top cover on page 74)
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 55)
●
RTC battery (see
RTC battery on page 53)
●
Memory module (see
Memory module on page 54)
●
WLAN module (see
Bluetooth module on page 63)
●
Modem module (see
Modem module on page 77)
Component replacement procedures 79