Removal and replacement procedures
Maintenance and Service Guide 4–41
USB board
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 4-6).
5. Remove the following components:
a. Optical drive (see “Optical drive” on page 4-7)
b. Hard drive (see “Hard drive” on page 4-11)
c. TV tuner module (see “TV tuner module” on page 4-18)
d. Switch cover and keyboard (see “Switch cover and keyboard” on page 4-19)
e. Speaker assembly (see “Speaker assembly” on page 4-23)
f. Display assembly (see “Display assembly” on page 4-25)
g. Top cover (see “Top cover” on page 4-34)
Remove the USB board:
1. Disconnect the USB board cable 1 from the LIF connector on the system board.
2. Disconnect the cable 2 from the subwoofer.
3. Remove the Phillips PM2.5×5.0 screw 3 that secures the USB board to the base enclosure.
4. Remove the USB board 4 from the base enclosure.
Reverse this procedure to install the USB board.
Description Spare part number
USB board (includes cable) 516332-001
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