Removal and replacement procedures 4–56
Subwoofer
✎
The subwoofer is included in the base enclosure spare part kit, spare part number 496469-001.
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 4-8).
5. Remove the following components:
a. Optical drive (see “Optical drive” on page 4-9)
b. Hard drive (see “Hard drive” on page 4-11)
c. TV tuner module (see “TV tuner module” on page 4-13)
d. Memory module (see “Memory module” on page 4-15)
e. WLAN module (see “WLAN module” on page 4-16)
f. Switch cover (see “Switch cover” on page 4-18)
g. Keyboard cover (see “Keyboard cover” on page 4-20)
h. Keyboard (see “Keyboard” on page 4-24)
i. Speaker assembly (see “Speaker assembly” on page 4-30)
j. Display assembly (see “Display assembly” on page 4-31)
k. Top cover (see “Top cover” on page 4-39)
l. System board (see “System board” on page 4-45)
m. USB board (see “USB board” on page 4-53)
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