Thermal Grease - Lenovo x3550 M4 Installation And Service Manual

Table of Contents

Figure 72. Thermal grease

Figure 73. Heat sink installation

11. If you installed the second microprocessor, install the fourth and sixth fans

If you have other devices to install or remove, do so now. Otherwise, go to

"Completing the installation" on page 92.

Thermal grease

The thermal grease must be replaced whenever the heat sink has been removed

from the top of the microprocessor and is going to be reused or when debris is

found in the grease.

System x3550 M4 Type 7914: Installation and Service Guide

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.

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.

(see "Replacing a hot-swap fan" on page 258).