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Reverse this procedure to install the microphone.
System board
Description Spare part number
System board (includes replacement thermal material) 453991-001
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 37).
5.
Remove the following components:
a.
Hard drive (see
Hard drive on page 38)
b.
Optical drive (see
Optical drive on page 45)
c.
Keyboard (see
Keyboard on page 47)
d.
Switch cover (see
Switch cover on page 49)
e.
Display assembly (see
Display assembly on page 51)
f.
Top cover (see
Top cover on page 55)
g.
Bluetooth module (see
Bluetooth module on page 61)
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:
●
Memory module (see
Memory module on page 40)
●
WLAN module (see
WLAN module on page 42)
●
ExpressCard assembly (see
ExpressCard assembly on page 67)
●
Modem module (see
Modem module on page 69)
●
Fan (see
Fan on page 71)
●
Heat sink (see
Heat sink on page 73)
●
Processor (see
Processor on page 75)
Remove the system board:
1. Remove the three Phillips PM2.5×6.0 screws (1) that secure the system board to the base enclosure.
Component replacement procedures 65