Audio board
Description Spare part number
Audio board (includes audio connectors, infrared lens, and audio board cable) 448626-001
Before removing the audio 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.
WLAN cover (see
WLAN module on page 55)
c.
Optical drive (see
Optical drive on page 62)
d.
Keyboard (see
Keyboard on page 63)
e.
Switch cover (see
Switch cover on page 65)
f.
Display assembly (see
Display assembly on page 68)
g.
Top cover (see
Top cover on page 73)
Remove the audio board:
1.
Release the ZIF connector to which the audio board cable is connected and disconnect the cable
(1) from the system board.
2. Remove the two Phillips PM2.5×5.0 screws (2) that secure the audio board to the computer.
3. Release the audio board (3) by sliding it back until the audio connectors disengage from the base
enclosure.
82 Chapter 4 Removal and replacement procedures
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