Lenovo ThinkServer RD650 User Manual And Hardware Maintenance Manual page 143

CAUTION:
The heat sink might be very hot. Turn off the server and wait several minutes to let the server cool
before removing the server cover.
Before you begin, print all the related instructions or ensure that you can view the PDF version on another
computer for reference.
Note: Depending on the model, the heat sink might look different from the illustrations in this topic.
To install or replace a heat sink, do the following:
1. Remove all external media from the drives and turn off all attached devices and the server. Then,
disconnect all power cords from electrical outlets and disconnect all cables that are connected to
the server.
2. Prepare your server. See "Removing or extending the server from the rack cabinet" on page 69.
3. Remove the server cover. See "Removing the server cover" on page 69.
4. Remove the cooling shroud. See "Removing and reinstalling the cooling shroud" on page 72.
5. Locate the heat sink or the place for installing the second heat sink. See "Server components" on
page 29.
6. If you are replacing a heat sink, do the following:
a. Remove the four screws that secure the heat sink to the system board. It is recommended that you
carefully remove the four screws from the system board using the following method to avoid any
possible damage to the system board.
1) Partially remove screw
completely remove it.
2) Partially remove screw
completely remove it.
Note: The four screws are integrated parts of the heat sink. Do not try to remove the four screws
from the heat sink.
Figure 105. Removing the screws that secure the heat sink
1 , then completely remove screw
2 , then completely remove screw
1 2
4
3 , and then return to screw
4 , and then return to screw
3
.
Chapter 6
1 and
2 and
129
Replacing hardware