Lenovo ThinkCentre Edge 72z - Replacing the Microprocessor

9.Followthesequence1,2,3,4ontheheatsinkassemblytotightenthefourscrewstosecuretheheat
sinkassemblytothesystemboard,asshowninFigure27“Loosingthefourscrewsthatsecuretheheat
sinkassemblytothesystemboard”onpage105.
10.Reinstallthesystemboardshield.See“Removingandreinstallingthesystemboardshield”onpage101.
11.Goto“Completingthepartsreplacement”onpage124.
Replacingthemicroprocessor
Attention
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafety
information”intheSafety,Warranty,andSetupGuidethatcamewithyourcomputer.Toobtainacopyofthe
Safety,Warranty,andSetupGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoreplacethemicroprocessor.
CAUTION:
Theheatsinkandfanassemblymightbeveryhot.Turnoffthecomputerandwaitthreetove
minutestoletthecomputercoolbeforeremovingthecomputercover.
Toreplacethemicroprocessor,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Placeasoft,cleantowelorclothonthedeskorotheratsurface.Holdthesidesofyourcomputerand
gentlylayitdownsothatthescreenisagainstthesurfaceandthecoverisfacingup.
3.Removethecomputercover.See“Removingthecomputercover”onpage94.
4.Locatethemicroprocessoronthesystemboard.See“LocatingmajorFRUsandCRUs”onpage82.
5.Removethesystemboardshield.See“Removingandreinstallingthesystemboardshield”onpage101.
6.Removetheheatsinkassemblytogainaccesstothemicroprocessor.See“Replacingtheheatsink
assembly”onpage104.
7.Pressthesmallhandle1toopentheretainer2toaccessthemicroprocessor3.
106ThinkCentreEdgeHardwareMaintenanceManual