Computer Hardware User Manual

Figure21.Installingthesystemfanassembly
8.Connectthecableofthenewsystemfanassemblytothesystemfanconnectoronthesystemboard.
9.Reinstalltheharddiskdriveifyouhaveremovedit.
Whattodonext:
•Toworkwithanotherpieceofhardware,gototheappropriatesection.
•Tocompletethereplacement,goto“Completingthepartsreplacement”onpage84.
Replacingthemicroprocessor
Attention
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre
SafetyandWarrantyGuide,goto:http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoreplacethemicroprocessor.
CAUTION:
Theheatsinkandmicroprocessormightbeveryhot.Turnoffthecomputerandwait
threetoveminutestoletthecomputercoolbeforeremovingthecomputercover.
Toreplacethemicroprocessor,dothefollowing:
1.Removethecomputercover.See“Removingthecomputercover”onpage68.
2.Removeanypartsanddisconnectanycablesthatmightpreventyouraccesstothesystemboard.
3.Locatetheheatsinkandremoveitfromthesystemboard.See“Locatingcomponents”onpage
66and“Replacingtheheatsink”onpage76.
4.Placetheheatsinkonitssidesothatthethermalgreaseonthebottomoftheheatsinkdoesnot
getincontactwithanything.
5.Liftthesmallhandle1andopentheretainer3toaccessthemicroprocessor2.
Chapter8.ReplacingFRUs79