Figure19.Screwsthatsecuretheheatsinkandfanassembly
7.Lifttheheatsinkandfanassemblyoffthesystemboard.
Notes:
a.Youmighthavetogentlytwisttheheatsinkandfanassemblytofreeitfromthemicroprocessor.
b.Whenhandlingtheheatsinkandfanassembly,donottouchthethermalgreaseonthebottom
oftheheatsinkandfanassembly.
8.Placethenewheatsinkandfanassemblyonthesystemboardsothatthefourscrewsarealigned
withthecorrespondingholesinthesystemboard.Makesurethatyouproperlyplacethenewheat
sinkandfanassemblysothatyoucaneasilyconnectthenewheatsinkandfanassemblycablet othe
microprocessorfanconnectoronthesystemboard.
9.Followthissequencetoinstallthefourscrewstosecurethenewheatsinkandfanassembly,asshown
inFigure19“Screwsthatsecuretheheatsinkandfanassembly”onpage24:
a.Partiallytightenscrew1,thenfullytightenscrew2,andthenfullytightenscrew1.
b.Partiallytightenscrew3,thenfullytightenscrew4,andthenfullytightenscrew3.
10.Connectthenewheatsinkandfanassemblycabletothemicroprocessorfanconnectoronthesystem
board.See“Locatingpartsonthesystemboard”onpage9.
11.Lowerandpositiontheheatsinkfanductonthetopoftheheatsinkandfanassemblyuntilthetwo
screwholesintheheatsinkfanductarealignedwiththoseintheheatsinkandfanassembly .Install
thetwoscr ewstosecur etheheatsinkfanduct.
24ThinkCentreUserGuide