Computer Hardware User Manual

9.Followthefollowingsequencetoinstallthefourscrewstosecureeachnewheatsinkandfanassembly.
Donotover-tightenthescrews.
a.Partiallytightenscrew1,thenfullytightenscrew2,andthenfullytightenscrew1.
b.Partiallytightenscrew3,thenfullytightenscrew4,andthenfullytightenscrew3.
10.Connecttheheatsinkandfanassemblycablestothemicroprocessorfanconnectorsonthesystem
board.See“Locatingpartsonthesystemboard”onpage58.
Whattodonext:
•Toworkwithanotherpieceofhardware,gototheappropriatesection.
•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage104.
Replacingtheharddiskdrivefanassembly
Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Important
SafetyInformation”onpage1
.
Thissectionprovidesinstructionsonhowtoreplacetheharddiskdrivefanassembly.
Toreplacetheharddiskdrivefanassembly,dothefollowing:
1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.
2.Removethecomputercover.See“Removingthecomputercover”onpage64.
3.Disconnecttheharddiskdrivefanassemblycablefromthesystemboard.See“Locatingpartsonthe
systemboard”onpage58.
4.Removeanypartsthatmightpreventyouraccesstotheharddiskdrivefanassembly.Dependingon
yourcomputermodel,youmightneedtoremovethePCIExpressx16graphicscardforeasieraccessto
theharddiskdrivefanassembly.See“InstallingorreplacingaPCIcard”onpage66
.
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