Lenovo System x3650 M4 Installation And Service Manual page 146

Figure 129. Thermal grease
a. Remove the plastic protective cover from the bottom of the heat sink.
b. Position the heat sink over the microprocessor. The heat sink is keyed to assist with proper
alignment.
Figure 130. Heat sink installation
c. Align and place the heat sink on top of the microprocessor in the retention bracket, thermal
material side down.
d. Press firmly on the heat sink.
e. Rotate the heat sink retention module release lever to the closed position and hook it
underneath the lock tab.
Step 11. If you installed the second microprocessor, install the fourth fan (see "Replacing a hot-swap
fan" on page 312).
If you have other devices to install or remove, do so now. Otherwise, go to "Completing the installation" on
page 136.
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Lenovo System x3650 M4 Installation and Service Guide