Reverse this procedure to install the audio/infrared board.
USB board
Description Spare part number
USB board (includes cable) 486798-001
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 52).
5. Remove the following components:
a. Hard drive (see
Hard drive on page 62).
b. Optical drive (see
Optical drive on page 55).
c. Switch cover and keyboard (see
Switch cover and keyboard on page 69).
d. Speaker assembly (see
Speaker assembly on page 74).
e. Display assembly (see
Display assembly on page 76).
f. Top cover (see
Top cover on page 84).
Remove the USB board:
1. Disconnect the USB board cable (1) from the LIF connector on the system board.
2. Remove the Phillips PM2.5×7.0 screw (2) that secures the USB board to the base enclosure.
90 Chapter 4 Removal and replacement procedures
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