4. Lift up on the front of the modem module (3) to disconnect it from the system board.
5. Remove the modem module.
Reverse the above procedure to install the modem module, making sure the connector on the bottom
of the modem module connects firmly into the system board.
Audio board
Description Spare part number
Audio board (includes audio connectors, infrared lens, and audio board cable) 486866-001
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 43).
5. Remove the following components:
a. Hard drive (see
Hard drive on page 46)
b. Optical drive (see
Optical drive on page 44)
c. Keyboard (see
Keyboard on page 56)
d. Switch cover (see
Switch cover on page 58)
e. Speaker assembly (see
Speaker assembly on page 60)
f. Display assembly (see
Display assembly on page 62)
g. Top cover (see
Top cover on page 69)
Component replacement procedures 77
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