Reverse this procedure to install the USB board.
Subwoofer
Description Spare part number
Subwoofer (includes cables and 2 rubber isolators) 686926-001
Before removing the subwoofer, follow these steps:
1. Turn off 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 the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 48), and then remove the following components:
a. Hard drive (see
Hard drive on page 49)
b. Optical drive (see
Optical drive on page 53)
c. Keyboard (see
Keyboard on page 57)
d. Top cover (see
Top cover on page 66)
e. Speakers (see
Speakers on page 87)
f. USB board (see
USB board on page 89)
Remove the subwoofer:
1. Remove the two Phillips PM2.0×2.0 broad head screws (1) that secure the subwoofer to the
base enclosure.
90 Chapter 4 Removal and replacement procedures
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