Audio board
Description Spare part number
Audio board 844421-001
Before removing the audio board, follow these steps:
1. Turn o 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 the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the bottom cover (see Bottom cover on page 28)
5. Remove the battery (see Battery on page 29).
6. Remove the system board (see System board on page 48).
Remove the audio board:
▲
Rotate the side of the board upward (1), and then lift the board up and o the computer (2).
Reverse the removal procedures to install the audio board.
58 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts