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Audio board
Description Spare part number
Audio board (includes cable) 684245-001
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 31).
5. Remove the following components:
a. Bottom door (see
Bottom door on page 33).
b. Keyboard (see
Keyboard on page 45)
c. Top cover (see
Top cover on page 47)
Remove the audio board:
1. Position the top cover upside-down.
2. Disconnect the audio board cable (1).
3. Remove the two Phillips PM2.0×3.0 screws (2) that secure the audio board to the top cover.
54 Chapter 4 Removal and replacement procedures