6.Followthissequencetoremovethefourscrewsthatsecuretheheatsinktothesystemboard:
a.Partiallyremovescrew1,thenfullyremovescrew2,andthenfullyremovescrew1.
b.Partiallyremovescrew3,thenfullyremovescrew4,andthenfullyremovescrew3.
Note:Carefullyremovethefourscrewsfromthesystemboardtoavoidanypossibledamagetothe
systemboard.Thefourscrewscannotberemovedfromtheheatsink.
Figure23.Removingtheheatsink
7.Liftthefailingheatsinkoffthesystemboard.
Notes:
a.Youmighthavetogentlytwisttheheatsinktofreeitfromthemicroprocessor.
b.Donottouchthethermalgreasewhilehandlingtheheatsink.
8.Positionthenewheatsinkonthesystemboardsothatthefourscrewsarealignedwiththe
correspondingholesinthesystemboard.
9.Followthissequencetoinstallthefourscrewstosecuretheheatsink,asshowninFigure23“Removing
theheatsink”onpage31.
a.Partiallytightenscrew1,thenfullytightenscrew2,andthenfullytightenscrew1.
b.Partiallytightenscrew3,thenfullytightenscrew4,andthenfullytightenscr ew3.
10.Toreinstallthefanduct,positionthefanductontheheatsinkandthenpressthefanductdownward
untilthetwotabsonthefanductaresecuredintoplace.
Whattodonext:
•Toworkwithanotherpieceofhardware,gototheappropriatesection.
•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage52.
Chapter2.Installingorreplacinghardware31