Lenovo ThinkCentre Edge - Replacing the Microprocessor

9.Followthesequence1,2,3,4ontheheatsinkassemblytotightenthefourscrewstosecuretheheat
sinkassemblytothesystemboard,asshowninFigure27“Loosingthefourscrewsthatsecuretheheat
sinkassemblytothesystemboard”onpage106.
10.Reinstallthesystemboardshield.See“Removingandreinstallingthesystemboardshield”onpage102.
11.Goto“Completingthepartsreplacement”onpage125.
Replacingthemicroprocessor
Attention
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafety
information”intheThinkCentreEdgeSafetyandWarrantyGuidethatcamewithyourcomputer.Toobtaina
copyoftheThinkCentreEdgeSafetyandWarrantyGuide,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”onpage95.
4.Locatethemicroprocessoronthesystemboard.See“FRUlocations”onpage86.
5.Removethesystemboardshield.See“Removingandreinstallingthesystemboardshield”onpage102.
6.Removetheheatsinkassemblytogainaccesstothemicroprocessor.See“Replacingtheheatsink
assembly”onpage105.
7.Pressthesmallhandle1toopentheretainer2toaccessthemicroprocessor3.
Chapter8.ReplacingFRUs107