Computer Hardware User Manual

Table Of Contents
20.Connecttheheatsinkandfanassemblycabletothesystemboard.See"Locatingpartsonthesystem
board"onpage71.
21.Installthenewsystemboardintothechassisandalignthescrewholeswiththoseinthechassis.Insert
andtightenthescrewsthatsecurethesystemboard.
22.Pivottheharddiskdrivebackintoposition.
23.Connectthepowerandsignalcablestotheharddiskdrive.
24.Connectallremainingcablestothesystemboard.See"Locatingpartsonthesystemboard"onpage71.
25.Goto"CompletingtheFRUreplacement"onpage91.
Replacingthemicroprocessor
Attention
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe"Importantsafetyinformation"
intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre
SafetyandWarrantyGuide,goto:http://www.lenovo.com/support
CAUTION:
Theheatsinkandmicroprocessormightbeveryhot.Turnoffthecomputerandwait
threetoveminutestoletthecomputercoolbeforeopeningthecomputercover.
Thissectionprovidesinformationonhowtoremoveandreplacethemicroprocessor.
Toremoveorreplacethemicroprocessor,dothefollowing:
1.Removethecover.See"Removingthecover"onpage68.
2.Placethecomputeronitsrightsidetohelpmakethemicroprocessormoreaccessible.
3.Disconnecttheheatsinkandfanassemblycablefromthesystemboard.See"Locatingpartsonthe
systemboard"onpage71.
4.Rotatehandle1toreleasetheheatsinkclampandthendisengagetheclampfromtheplasticretention
bracket.
Chapter8ReplacingFRUs(Types7061,7090,9353,9421,9485,9623,9625,9705,9786,9795,9935,9946,9953)77