4–38
Maintenance and Service Guide
Removal and replacement procedures
Fan/heat sink assembly
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 4-7
).
5. Remove the following components:
a. Optical drive (see
“Optical drive” on page 4-8
)
b. Hard drive (see
“Hard drive” on page 4-10
)
c. Keyboard (see
“Keyboard” on page 4-17
)
d. Switch cover (see
“Switch cover” on page 4-20
)
e. Power button board (see
“Power button board” on page 4-22
)
f. Display assembly (see
“Display assembly” on page 4-23
)
g. Top cover (see
“Top cover” on page 4-30
)
h. Bluetooth module (see
“Bluetooth module” on page 4-35
)
i. System board (see
“System board” on page 4-36
)
Description
Spare part number
Fan/heat sink assembly (includes replacement thermal material) for use only with computer models
with UMA graphics subsystem memory
531210-001
Fan/heat sink assembly (includes replacement thermal material) for use only with computer models
with discrete graphics subsystem memory
531220-001
