Lenovo ThinkServer TD350 User Manual And Hardware Maintenance Manual page 184

• Depending on the model, your server might look slightly different from the illustrations in this topic.
• Use any documentation that comes with the new heat sink and follow those instructions in addition to
the instructions in this topic.
To replace the 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. If the server is installed in a rack cabinet, remove the server from the rack cabinet and place it on a flat,
clean, and static-protective surface. See the Rack Installation Instructions that comes with the server. If
the server is in tower form factor, lay the server on its side for easier operation.
3. Remove the server cover. See "Removing the server cover" on page 72.
4. Remove the cooling shroud. See "Removing the cooling shroud" on page 75.
5. Remove the four screws that secure the heat sink to the system board. It is recommended that you
carefully remove the four screws using the following method to avoid any possible damage to the
system board.
a. Partially remove screw
completely remove it.
b. 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 138. Removing the screws that secure the heat sink
6. Gently twist the heat sink to free it from the microprocessor and then lift the heat sink off the system
board.
170
ThinkServer TD350 User Guide and Hardware Maintenance Manual
1
, then completely remove screw
2 , then completely remove screw
3
, and then return to screw
4 , and then return to screw
1
and
2 and