Audio board
Description Spare part number
Audio board for use in models with 8300H/8750H processors L20326-001
Audio board for use in models with 8250U/8550U processors L20327-001
Audio board cable L20328-001
Before removing the audio board and security bracket, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is o 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 rst unplugging the power cord from the AC outlet and then
unplugging the AC adapter from the computer.
4. Remove the bottom cover (see Bottom cover on page 36).
5. Remove the battery (see Battery on page 39).
6. Remove the hard drive (see Hard drive on page 47).
To remove the audio board:
1. Disconnect the cable from the audio board ZIF connector (1).
2. Remove the Phillips M2.0×3.0 screw (2) that secures the board to the computer.
3. Rotate the back of the board up and pull it away from the side of the computer to remove it (3).
Reverse this procedure to install the audio board.
Component replacement procedures 57
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