Heat sink and fan
Description Spare part number
Fan 854468-001
Heat sink 854469-001
IMPORTANT: Make special note of each screw and screw lock size and location during removal
and replacement.
Before removing the heat sink and the fan, follow these steps:
1. Shut down the computer.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet and then
unplugging the AC adapter from the computer.
4. Remove the base enclosure (see Base enclosure on page 20), and then remove the following
components:
a. Battery (see Battery on page 22).
b. Optical drive dummy (see Optical drive dummy on page 22).
c. Hard drive (see Hard drive on page 23).
d. Memory (see Memory on page 25).
e. WLAN module (see WLAN module on page 28).
Remove the heat sink and the fan:
1. Disconnect the heat sink connector from the system board (1), and then loosen the cables from the
routing channels.
2. Remove 3 screws from the heat sink(2), and then loosen 3 captive screws from the fan (3).
30 Chapter 5 Removal and replacement procedures for authorized service provider parts
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