Lenovo ThinkServer RD450 - Page 139

Note:Dependingonthemodel,theheatsinkmightlookdifferentfromtheillustrationsinthistopic.
Toinstallorreplaceaheatsink,dothefollowing:
1.Removeallexternalmediafromthedrivesandturnoffallattacheddevicesandtheserver.Then,
disconnectallpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedto
theserver.
2.Prepareyourserver.See“Removingorextendingtheserverfromtherackcabinet”onpage65.
3.Removetheservercover.See“Removingtheservercover”onpage65.
4.Removethecoolingshroud.See“Removingandreinstallingthecoolingshroud”onpage68.
5.Locatetheheatsinkortheplaceforinstallingthesecondheatsink.See“Servercomponents”on
page25.
6.Ifyouarereplacingaheatsink,dothefollowing:
a.Removethefourscrewsthatsecuretheheatsinktothesystemboard.Itisrecommendedthatyou
carefullyremovethefourscrewsfromthesystemboardusingthefollowingmethodtoavoidany
possibledamagetothesystemboard.
1)Partiallyremovescrew1,thencompletelyremovescrew3,andthenreturntoscrew1and
completelyremoveit.
2)Partiallyremovescrew2,thencompletelyremovescrew4,andthenreturntoscrew2and
completelyremoveit.
Note:Thefourscrewsareintegratedpartsoftheheatsink.Donottrytoremovethefourscrews
fromtheheatsink.
1 2
3
4
Figure93.Removingthescrewsthatsecuretheheatsink
b.Gentlytwisttheheatsinktofreeitfromthemicroprocessorandthenlifttheheatsinkoffthesystem
board.
c.Layasidetheoldheatsink.
Notes:
•Useacleaningpadtowipethethermalgreasefromthetopofthemicroprocessorbeforeinstalling
thenewheatsink.Disposeofthecleaningpadafterallofthethermalgreaseisremovedfrom
themicroprocessor.
•Whenhandlingtheheatsink,donottouchthethermalgreaseonthebottomofit.
Chapter6.Replacinghardware125