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b. Partially tighten screw
10. Connect the heat sink and fan assembly cable to the microprocessor fan connector on the system
board. See "Parts on the system board" on page 34.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to "Completing the parts replacement" on page 108.
Replacing the microprocessor
Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 "Read this first: Important safety information" on page 1.
CAUTION:
The heat sink and microprocessor 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 microprocessor, 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 82.
3. Locate the microprocessor. See "Computer components" on page 31.
4. Disconnect all cables connected to the system board.
5. Remove the heat sink and fan assembly. See "Replacing the heat sink and fan assembly" on page 95.
Note: Place the heat sink and fan assembly on its side so that the thermal grease on the bottom of it
does not get in contact with anything.
6. Lift the small handle
Figure 27. Accessing the microprocessor
3
, then fully tighten screw
1
and open the retainer
4
, and then fully tighten screw
2
to access the microprocessor
Chapter 9
3
.
3
.
.
Installing or replacing hardware
97
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