Lenovo ThinkServer RD450 User Manual And Hardware Maintenance Manual page 133

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 61.
3. Remove the server cover. See "Removing the server cover" on page 61.
4. Remove the cooling shroud. See "Removing and reinstalling the cooling shroud" on page 64.
5. Locate the heat sink or the place for installing the second heat sink. See "Server components" on
page 25.
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 88. Removing the screws that secure the heat sink
b. Gently twist the heat sink to free it from the microprocessor and then lift the heat sink off the system
board.
c. Lay aside the old heat sink.
Notes:
• Use a cleaning pad to wipe the thermal grease from the top of the microprocessor before installing
the new heat sink. Dispose of the cleaning pad after all of the thermal grease is removed from
the microprocessor.
• When handling the heat sink, do not touch the thermal grease on the bottom of it.
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
119
Replacing hardware