Heat sink
Description Spare part number
Heat sink (includes the replacement thermal material) 942841-001
Before removing the heat sink, follow these steps:
1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn the computer
on, and then shut it down through the operating system.
2. 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.
3. Disconnect all external devices from the computer.
4. Remove the bottom cover (see Bottom cover on page 29), and then remove the following components:
a. Battery (see Battery on page 31)
b. Solid-state drive (see Solid-state drive on page 33)
c. Fans (see Fans on page 35)
d. System board (see System board on page 51)
Remove the heat sink:
1. Turn the system board upside down with the front toward you.
2. Remove the three Phillips M2.0×2.8 screws (1) that secure the heat sink to the system board.
54 Chapter 5 Removal and replacement procedures