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2. Remove the speaker assembly (2) from the base enclosure.
Reverse this procedure to install the speaker assembly.
Fan/heat sink assembly
NOTE: All fan/heat sink assembly spare part kits include thermal material.
Description Spare part number
Fan/heat sink assembly 451731-001
Before removing the fan/heat sink 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)
74 Chapter 4 Removal and replacement procedures