Remove the rear USB board:
1
.
Disconnect the rear USB board cable
(1)
from the system board.
2
.
Remove the Phillips PM2.5×4.0 screw
(2)
that secures rear USB board the to the computer.
3
.
Remove the rear USB board
(3)
.
Reverse this procedure to install the rear USB board.
Subwoofer
Description
Spare part number
Subwoofer (includes rubber isolators)
448164-001
Before removing the subwoofer, 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 36
).
5
.
Remove the following components:
a
.
Hard drive (see
Hard drive on page 42
)
b
.
Optical drive (see
Optical drive on page 49
)
c
.
Keyboard (see
Keyboard on page 50
)
d
.
Hinge cover (see
Hinge cover on page 52
)
e
.
Rear cover (see
Rear cover on page 53
)
f
.
Top cover (see
Top cover on page 55
)
Component replacement procedures 67
