Lenovo ThinkServer TD200x - Manual (Page 110)

Attention: Do not touch the thermal grease 1 on the bottom of the heat
sink 2 or set down the heat sink after you remove the plastic cover. Touching
the thermal grease will contaminate it. If the thermal grease is contaminated,
call Lenovo service and support to request a replacement thermal grease kit.
For information about installing the replacement thermal grease, see “Thermal
grease” on page 95.
a. Make sure that the heat-sink release lever is in the fully open position.
b. Remove the plastic protective cover from the bottom of the heat sink.
c. Align the heat sink above the microprocessor, using the alignment key on
the heat sink, with the thermal-grease side down.
1 Heat sink 2
2 Alignment key
3 Microprocessor release lever
4 Alignment key tab
5 VRM connector
6 Microprocessor 2 VRM
7 Microprocessor 2
94 ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Installation and User Guide