Lenovo ThinkServer sd350 Installation And Service Manual page 143

a. Use a screwdriver to loosen the captive screw on one side of the heat sink to break the seal
with the microprocessor.
b. Loosen all the captive screws on the heat sink, rotating each screw one full turn until each
screw is loose.
c. Gently lift the heat sink from the microprocessor. After removal, place the heat sink (with the
thermal grease side up) on a clean, flat surface.
Heat sink for cpu 1
Figure 66. Heat sink removal
Step 8. Open the microprocessor socket release levers and retainer.
Figure 67. Microprocessor socket levers and retainer disengagement
a. Identify which release lever is labeled as the first release lever to open and open it.
b. Open the second release lever on the microprocessor socket.
c. Open the microprocessor retainer.
Attention: Do not touch the microprocessor contacts. Contaminants on the microprocessor
contacts, such as oil from your skin, can cause connection failures between the contacts
and the socket.
Heat sink for cpu 2
.
Chapter 5 Removing and replacing server components
127