6.Ifyouarereplacingaheatsink,removethefourscrewsthatsecuretheheatsinktothesystemboard.It
isrecommendedthatyoucarefullyremovethefourscrewsfromthesystemboardusingthefollowing
methodtoavoidanypossibledamagetothesystemboard.
a.Partiallyremovescrew1,thencompletelyremovescrew3,andthenreturntoscrew1and
completelyremoveit.
b.Partiallyremovescrew2,thencompletelyremovescrew4,andthenreturntoscrew2and
completelyremoveit.
Note:Thefourscrewsareintegratedpartsoftheheatsink.Donottrytoremovethefourscrews
fromtheheatsink.
Figure77.Removingtheheatsink
7.Gentlytwisttheheatsinktofreeitfromthemicroprocessorandthenlifttheheatsinkoffthesystem
board.
8.Layasidetheoldheatsink.Touchthestatic-protectivepackagethatcontainsthenewheatsinktoany
unpaintedsurfaceontheoutsideoftheserver.Then,takethenewheatsinkoutofthepackage.
Notes:
•Ifyouarereplacingaheatsink,useacleaningpadthatmightcomewiththenewheatsinktowipe
thethermalgreasefromthetopofthemicroprocessorbeforeinstallingthenewheatsink.Disposeof
thecleaningpadafterallofthethermalgreaseisremovedfromthemicroprocessor.
•Whenhandlingthenewheatsink,donottouchthethermalgreaseonthebottomofit.
9.Removeanyprotectivecoverthatprotectsthethermalgreaseonthebottomofthenewheatsink.Then,
placethenewheatsinkonthesystemboardsothatthefourscrewsonthenewheatsinkarealigned
withthecorrespondingmountingstudsonthesystemboard.
110ThinkServerRD550UserGuideandHardwareMaintenanceManual
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