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Heat sink
NOTE: The heat sink spare part kit includes replacement thermal material.
Description Spare part number
Heat sink 707907-001
Before removing the heat sink, follow these steps:
1. Turn off 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 the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 40), and then remove the following components:
a. Hard drive cover (see
Hard drive cover on page 45)
b. Hard drive (see
Hard drive/SSD drive on page 46)
c. Service cover (see
Service cover on page 51)
d. WLAN module (see
WLAN module on page 56)
e. WWAN module (see
WWAN module on page 54)
f. Fan (see
Fan on page 66)
g. Keyboard (see
Keyboard on page 58)
h. Base enclosure (see
Base enclosure on page 61)
i. System board (see
System board on page 67)
Remove the heat sink:
1. Following the 1, 2, 3, 4 sequence stamped into the heat sink, loosen the four captive Philllips
screws (1) that secure the heat sink to the system board.
70 Chapter 4 Removal and replacement procedures