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Removal and replacement procedures
Maintenance and Service Guide 4–47
Subwoofer
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 4-7).
5. Remove the following components:
a. Primary and secondary hard drive covers (see
“Hard drive covers” on page 4-9)
b. Primary and secondary hard drives (see
“Hard drive” on page 4-12)
c. Optical drive (see
“Optical drive” on page 4-8)
d. Switch cover and keyboard (see
“Switch cover and keyboard” on page 4-21)
e. Speaker assembly (see
“Speaker assembly” on page 4-26)
f. Display assembly (see
“Display assembly” on page 4-28)
g. Top cover (see
“Top cover” on page 4-37)
h. USB board (see
“USB board” on page 4-46)
Remove the subwoofer:
1. Remove the three Phillips PM2.5×5.0 broadhead screws 1 that secure the subwoofer to the base enclosure.
2. Ensure that the rubber grommets 2 that contained the broadhead screws are still in place.
3. Remove the subwoofer 3.
Reverse this procedure to install the subwoofer.
Description Spare part number
Subwoofer 516333-001