Lenovo 3376, Maintenance Manual

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Figure 82. Installing the heat sink fan duct
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 158.
Replacing the microprocessor
Attention:
Do not open your computer or attempt any repair before reading and understanding “Important safety information”
on page 1.
This section provides instructions on how to replace the microprocessor.
CAUTION:
The heat sink and microprocessor might be very hot. Turn off the computer and wait three to five
minutes to let the computer cool before removing the computer cover.
To replace the microprocessor, do the following:
1. Remove all media from the drives and turn off all attached 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 119.
3. Remove the heat sink and fan assembly. See “Replacing the heat sink and fan assembly” on page 138.
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.
4. Locate the system board and disconnect all cables connected to the system board. See “Locating
parts on the system board” on page 79.
Chapter 10
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Replacing FRUs (machine types: 3377, 3386, and 3388)
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