Lenovo System x3550 M5 - Page 288

Attention:
•Donotsetdowntheheatsinkafteryouremovetheplasticcover.
•Donottouchthethermalgreaseonthebottomoftheheatsinkafteryouremovetheplastic
cover.Touchingthethermalgreasewillcontaminateit.See“Thermalgrease”onpage275
formoreinformation.
Thermal
grease
Heat
sink
Figure207.Thermalgrease
a.Removetheplasticprotectivecoverfromthebottomoftheheatsink.
b.Positiontheheatsinkoverthemicroprocessor.Theheatsinkiskeyedtoassistwithproper
alignment.
Heat Sink
Figure208.Heatsinkinstallation
c.Alignandplacetheheatsinkontopofthemicroprocessorintheretentionbracket,thermal
materialsidedown.
d.Pressfirmlyontheheatsink.
e.Pressdownonthecenteroftheheatsink;then,pressfirmlyonthecaptivescrewsandtighten
them,alternatingbetweenthescrewsinafigure-8patternasillustratedontheheatsinklabel
untiltheyaretightened.Youcancausedamagetothemicroprocessorifyoutightenthe
274LenovoSystemx3550M5InstallationandServiceGuide