Lenovo ThinkSystem SR650 Maintenance Manual page 197

Note: The heat sink, processor, and processor retainer for your system might be different than those shown
in the illustrations.
1. Remove the existing PHM, if one is installed. See "Remove a processor and heat sink" on page 184.
2. If you are replacing a heat sink, replace the processor retainer. Processor retainers should not be reused.
Note: Replacement processors come with both rectangular and square processor retainers. A
rectangular retainer comes attached to the processor. The square retainer can be discarded.
a. Remove the old processor retainer.
Figure 148. Removing a processor retainer
Note: When the processor is out of its retainer, hold the processor by the long edges to prevent
touching the contacts or the thermal grease, if it is applied.
With the processor-contact side up, flex the ends of the retainer down and away from the processor
to release the retaining clips; then, remove the processor from the retainer. Discard the old retainer.
b. Install a new processor retainer.
.
Chapter 3 Hardware replacement procedures
189