Reverse the preceding procedure to install the system board.
Speaker assembly
Description Spare part number
Speaker assembly 451747-001
Before removing the speaker assembly, 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 41).
5. Remove the following components:
a. Hard drive (see
Hard drive on page 52)
b. Optical drive (see
Optical drive on page 56)
c. Switch cover (see
Switch cover on page 57)
d. Keyboard (see
Keyboard on page 59)
e. Display assembly (see
Display assembly on page 62)
f. Top cover (see
Top cover on page 67)
g. System board (see
System board on page 70)
Remove the speaker assembly:
1. Remove the Torx T8M2.5×4.0 screw (1) that secures the speaker assembly to the base
enclosure.
Component replacement procedures 73
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