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Replacing the heat sink and fan assembly
Attention: Do not open your computer or attempt any repair before reading and understanding the "Read
this first: Important safety information" on page iii .
CAUTION:
The heat sink and fan assembly might be very hot. Before you open the computer cover, turn off the
computer and wait several minutes until the computer is cool.
To replace the heat sink and fan assembly, do the following:
1. Remove any media from the drives and turn off all connected devices and the computer. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to the
computer.
2. Remove the computer cover. See "Removing the computer cover" on page 56.
3. Lay the computer on its side for easier access to the system board.
4. Locate the heat sink and fan assembly. See "Computer components" on page 5 .
5. Disconnect the heat sink and fan assembly cable from the microprocessor fan connector on the system
board.
6. Follow the following sequence to remove the four screws that secure the heat sink and fan assembly
to the system board:
a. Partially remove screw
b. Partially remove screw
Note: Carefully remove the four screws from the system board to avoid any possible damage to the
system board. The four screws cannot be removed from the heat sink and fan assembly.
Figure 21. Removing the heat sink and fan assembly
7. Lift the failing heat sink and fan assembly off the system board.
1
, then fully remove screw
3
, then fully remove screw
2
, and then fully remove screw
4
, and then fully remove screw
.
Chapter 7
Installing or replacing hardware
1
.
3
.
65
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