System board
NOTE: All system board spare part kits include replacement thermal material.
Description Spare part number
For use in computer models with Intel processors:
Equipped with a discrete graphics subsystem 448596-001
Equipped with a UMA graphics subsystem 448598-001
For use in computer models with AMD processors
453413-001
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 47).
5.
Remove the following components:
a.
Hard drive (see
Hard drive on page 52)
b.
Optical drive (see
Optical drive on page 62)
c.
Keyboard (see
Keyboard on page 63)
d.
Switch cover (see
Switch cover on page 65)
e.
Display assembly (see
Display assembly on page 68)
f.
Top cover (see
Top cover on page 73)
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:
●
RTC battery (see
RTC battery on page 59)
●
Memory modules (see
Memory module on page 60)
●
WLAN module (see
WLAN module on page 55)
●
Modem module (see
Modem module on page 80)
Remove the system board:
1. Disconnect the power connector cable (1) from the system board.
Component replacement procedures 91
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