Removal and replacement procedures 4–34
Audio board
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 4-7).
5. Remove the following components:
a. Optical drive (see “Optical drive” on page 4-8)
b. Hard drive (see “Hard drive” on page 4-10)
c. Keyboard (see “Keyboard” on page 4-17)
d. Keyboard cover (see “Keyboard cover” on page 4-20)
e. Power button board (see “Power button board” on page 4-22)
f. Display assembly (see “Display assembly” on page 4-23)
Remove the audio board:
1. Release the ZIF connector 1 to which the audio board cable is attached, and disconnect the audio board
cable 2 from the system board.
2. Remove the two Phillips PM2.0×4.0 screws 3 that secure the audio board to the base enclosure.
3. Remove the audio board 4.
Reverse this procedure to install the audio board.
Description Spare Part Number
Audio board (includes audio board cable) 486634-001
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