Lenovo ThinkCentre A58e English (User guide) - Page 27

Replacing the heat sink

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What to do next: v To work with another piece of hardware, go to the appropriate section. v To complete the replacement, go to "Completing the parts replacement" on page 24. Replacing the heat sink Attention Do not open your computer or attempt any repair before reading and understanding the "Important safety information" in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide, go to: http://www.lenovo.com/support This section provides instructions on how to replace the heat sink. CAUTION: The heat sink 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 heat sink, do the following: 1. Remove the computer cover. See "Removing the computer cover" on page 12. 2. Locate the heat sink. See "Locating components" on page 9. 3. Remove the four screws that secure the heat sink. Then, lift the heat sink off the system board. Notes: a. Carefully remove the four screws from the system board to avoid any possible damage. The four screws cannot be removed from the heat sink. b. You might have to gently twist the heat sink to free it from the microprocessor. c. When handling the heat sink, do not touch the thermal grease on the bottom of the heat sink. Figure 16. Removing the heat sink Chapter 2. Installing or replacing hardware 19

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What to do next:
v
To work with another piece of hardware, go to the appropriate section.
v
To complete the replacement, go to “Completing the parts replacement” on
page 24.
Replacing the heat sink
Attention
Do not open your computer or attempt any repair before reading and understanding the
“Important safety information” in the
ThinkCentre Safety and Warranty Guide
that came with
your computer. To obtain a copy of the
ThinkCentre Safety and Warranty Guide
, go to:
This section provides instructions on how to replace the heat sink.
CAUTION:
The heat sink 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 heat sink, do the following:
1.
Remove the computer cover. See “Removing the computer cover” on page 12.
2.
Locate the heat sink. See “Locating components” on page 9.
3.
Remove the four screws that secure the heat sink. Then, lift the heat sink off
the system board.
Notes:
a.
Carefully remove the four screws from the system board to avoid any
possible damage. The four screws cannot be removed from the heat sink.
b.
You might have to gently twist the heat sink to free it from the
microprocessor.
c.
When handling the heat sink, do not touch the thermal grease on the
bottom of the heat sink.
Figure 16. Removing the heat sink
Chapter 2. Installing or replacing hardware
19