Remove the audio/infrared board:
1. Disconnect the audio/infrared board cable (1) from the LIF connector on the system board.
2. Remove the Phillips PM2.5x7.0 screw (2) that secures the audio/infrared board to the base
enclosure.
3. Release the clip (3) built into the base enclosure that secures the audio/infrared board.
4. Lift the audio/infrared board (4) straight up to remove it from the base enclosure.
Reverse this procedure to install the audio/infrared board.
USB board
Description Spare part number
USB board (includes cable) 516497-001
Before removing the USB 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).
Component replacement procedures 85
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