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b.
Connect the thermal sensor cable to the motherboard.
Step 10. Reinstall all the removed parts, and then reconnect the cables.
Replacing the heat-sink and fan assembly
Note: For this procedure, it helps to lay the computer flat.
To replace the heat-sink and fan assembly:
Step 1.
Remove any media from the drives, shut down the operating system, and turn off the computer and
all attached devices.
Step 2.
Unplug all power cords from electrical outlets.
Step 3.
Disconnect all cables attached to the computer. This includes power cords, input/output (I/O)
cables, and any other cables that are connected to the computer. Refer to Chapter 7 "Locating
connectors, controls and components" on page 21 to locate the various connectors.
Step 4.
Remove the right computer cover. Refer to "Removing the right computer cover" on page 31.
Step 5.
Disconnect the heat sink and fan assembly cable from the microprocessor fan connector on the
motherboard.
Loosen the four screws that secure the heat sink and fan assembly to the motherboard in the following
sequence:
• a. Partially remove screw
• b. Partially remove screw
1
, fully remove screw
2
3
, fully remove screw
4
, and then fully remove screw
, and then fully remove screw
1
.
3
.
.
Chapter 10
Replacing hardware
53
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