Specifications

3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 34), and then remove the following components:
a. Service door (see
Service door on page 35)
b. Hard drive (see
Hard drive on page 36)
c. Optical drive (see
Optical drive on page 39)
d. WLAN module (see
WLAN module on page 43)
e. Keyboard (see
Keyboard on page 46)
f. Top cover (see
Top cover on page 49)
g. System board (see
System board on page 56)
Remove the fan/heat sink assembly:
1. Turn the system board upside down, with the front toward you.
NOTE: Steps 2 through 5 apply to computer models equipped with a graphics subsystem with
discrete memory. See steps 6 and 9 for fan/heat sink assembly removal information for
computer models equipped with a graphics subsystem with UMA memory.
2. Disconnect the fan cable (1) from the system board.
3. Following the 1, 2, 3, 4, 5, 6, 7 sequence stamped into the fan/heat sink assembly, loosen
the four Phillips M2.0×10.0 captive screws (2) and the three Phillips M2.0×3.5 captive screws (3)
that secure the fan/heat sink assembly to the system board.
4. Remove the Phillips M2.0×5.0 screw (4) that secures the fan/heat sink assembly to
the system board.
60 Chapter 4 Removal and replacement procedures