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3. Lift the modem module (3) straight up to disconnect it from the system board.
Reverse this procedure to install the modem module.
Audio/infrared board
Description Spare part number
Audio/infrared board for use with computers equipped with discrete graphics memory (includes
cable)
512836-001
Audio/infrared board for use with computers equipped with UMA graphics memory (includes cable) 511892-001
Before removing the audio/infrared 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 48).
5. Remove the following components:
a. Hard drive (see
Hard drive on page 57).
b. Optical drive (see
Optical drive on page 51).
c. Switch cover and keyboard (see
Switch cover and keyboard on page 63).
d. Display assembly (see
Display assembly on page 68).
e. Top cover (see
Top cover on page 80).
84 Chapter 4 Removal and replacement procedures