Theheatsinkandfanassemblymightbeveryhot.Turnoffthecomputerandwaitthreetove
minutestoletthecomputercoolbeforeremovingthecomputercover.
Toreplacetheheatsinkandfanassembly,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Removethecomputercover.See“Removingthecomputercover”onpage14.
3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage15.
4.Pivotthedrivebayassemblyupward.Removethefourscrewsthatsecuretheheatsinkfanductand
thenlifttheheatsinkfanductuptoremoveitfromthechassis.
Figure18.Removingtheheatsinkfanduct
5.Disconnecttheheatsinkandfanassemblycablefromthemicroprocessorfanconnectoronthesystem
board.See“Locatingpartsonthesystemboard”onpage9.
24ThinkCentreUserGuide