e. Display assembly (see Display assembly on page 74)
f. Top cover (see
Top cover on page 80)
Remove the ExpressCard board:
1. Remove the two Phillips PM2.5×3.0 broad-head screws (1) that secure the ExpressCard board to
the computer.
2. Remove the ExpressCard board (2).
Reverse this procedure to install the ExpressCard board.
Audio board
Description Spare part number
Audio board (includes cable) 486250-001
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 46).
5. Remove the following:
a. Hard drive (see
Hard drive on page 52)
b. Optical drive (see
Optical drive on page 55)
c. Keyboard (see
Keyboard on page 60)
d. Switch cover (see
Switch cover on page 65)
84 Chapter 4 Removal and replacement procedures
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