![](/images/new-backgrounds/1270545/270545163x1.webp)
4. Remove the audio board (4).
Reverse the above procedure to install the audio board.
Bluetooth module
Description | Spare part number |
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Bluetooth module (includes Bluetooth module cable) | |
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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