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4. Remove the audio board (4).
Reverse the above procedure to install the audio board.
Bluetooth module
Description Spare part number
Bluetooth module (includes Bluetooth module cable) 397923-002
Before removing the Bluetooth module, 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 40).
5. Remove the following components:
a. Hard drive (see
Hard drive on page 45)
b. WLAN cover (see
WLAN module on page 48)
c. Optical drive (see
Optical drive on page 53)
d. Keyboard (see
Keyboard on page 54)
e. Switch cover (see
Switch cover on page 56)
f. Display assembly (see
Display assembly on page 59)
g. Top cover (see
Top cover on page 65)
h. Audio board (see
Audio board on page 73)
74 Chapter 4 Removal and replacement procedures