Lenovo ThinkServer TD350 70DG - Basic troubleshooting tables

•Useanydocumentationthatcomeswiththenewheatsinkandfollowthoseinstructionsinadditionto
theinstructionsinthistopic.
Toreplacetheheatsink,dothefollowing:
1.Removeallexternalmediafromthedrivesandturnoffallattacheddevicesandtheserver.Then,
disconnectallpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedto
theserver.
2.Iftheserverisinstalledinarackcabinet,removetheserverfromtherackcabinetandplaceitonaflat,
clean,andstatic-protectivesurface.SeetheRackInstallationInstructionsthatcomeswiththeserver.If
theserverisintowerformfactor,laytheserveronitssideforeasieroperation.
3.Removetheservercover.See“Removingtheservercover”onpage70.
4.Removethecoolingshroud.See“Removingthecoolingshroud”onpage73.
5.Removethefourscrewsthatsecuretheheatsinktothesystemboard.Itisrecommendedthatyou
carefullyremovethefourscrewsusingthefollowingmethodtoavoidanypossibledamagetothe
systemboard.
a.Partiallyremovescrew1,thencompletelyremovescrew3,andthenreturntoscrew1and
completelyremoveit.
b.Partiallyremovescrew2,thencompletelyremovescrew4,andthenreturntoscrew2and
completelyremoveit.
Note:Thefourscrewsareintegratedpartsoftheheatsink.Donottrytoremovethefourscrews
fromtheheatsink.
Figure133.Removingthescrewsthatsecuretheheatsink
6.Gentlytwisttheheatsinktofreeitfromthemicroprocessorandthenlifttheheatsinkoffthesystem
board.
166ThinkServerTD350UserGuideandHardwareMaintenanceManual