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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 47), and then remove the following components:
a. Hard drive (see
Hard drive on page 48)
b. Optical drive (see
Optical drive on page 52)
c. Keyboard (see
Keyboard on page 56)
d. Top cover (see
Top cover on page 65)
e. Speakers (see
Speakers on page 84)
f. USB board (see
USB board on page 86)
Remove the subwoofer:
1. Remove the two Phillips PM2.0×2.0 broad head screws (1) that secure the subwoofer to the
base enclosure.
Component replacement procedures
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