System board
NOTE: The system board spare part kit includes replacement thermal material. Replacement thermal
material is also available in the Thermal Material Kit, spare part number 651046-001.
Description Spare part number
For use only with computer models equipped with an AMD processor and a graphics subsystem with
discrete video memory (includes 1-GB of graphics subsystem memory)
653427-001
For use only with computer models equipped with an AMD processor and a graphics subsystem with
UMA video memory
653428-001
For use only with computer models equipped with an Intel processor and a graphics subsystem with
discrete video memory (includes 1-GB of graphics subsystem memory)
650486-001
For use only with computer models equipped with an Intel processor and a graphics subsystem with
UMA video memory
650485-001
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 41), and then remove the following components:
a. WLAN module (see
WLAN module on page 44)
b. WWAN module (see
WWAN module on page 47)
c. Optical drive (see
Optical drive on page 52)
d. Hard drive (see
Hard drive on page 55)
e. Keyboard (see
Keyboard on page 57)
f. Top cover (see
Top cover on page 60)
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:
●
SIM (see
SIM on page 42)
●
RTC battery (see
RTC battery on page 49)
●
Memory module (see
Memory module on page 50)
●
Heat sink (see
Heat sink on page 80)
●
Fan (see
Fan on page 88)
●
Processor (see
Processor on page 85)
76 Chapter 4 Removal and replacement procedures
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