Lenovo ThinkCentre A70z - Replacing the Microprocessor and Heat Sink Assembly; Removing the Microprocessor and Heat Sink Assembly

6.Reinstalltheopticaldrive.See“Installinganopticaldrive”onpage78.
7.Reinstalltheheatsinkassembly.See“Installingthemicroprocessorandheatsinkassembly”onpage87.
8.Closethesystemboardshielding.See“Closingthesystemboardshielding”onpage72.
9.Goto“CompletingtheFRUinstallation”onpage108.
Replacingthemicroprocessorandheatsinkassembly
CAUTION:
Themicroprocessorandheatsinkassemblymightbeveryhot.Turnoffthecomputer
andwaitthreetoveminutestoletthecomputercoolbeforeopeningthecomputercover.
Attention
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafety
information”intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.Toobtainacopy
oftheThinkCentreSafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoreplacethemicroprocessorandheatsinkassembly.
Removingthemicroprocessorandheatsinkassembly
Toremovethemicroprocessorandheatsinkassembly,dothefollowing:
1.Turnoffthecomputer.
2.Disconnectallcables,powercords,andexternaloptionsfromyourcomputer.See“Rearconnectors”
onpage65
.
3.Placeasoft,cleantowelorclothonthedeskorsurface.Holdthesidesofyourcomputerandgentlylay
itdownsothatthescreenisagainstthesurfaceandthecoverisfacingup.
4.Removethecomputercover.See“Removingthecomputercover”onpage70.
5.Openthesystemboardshielding.See“Openingthesystemboardshielding”onpage71.
6.Locatethemicroprocessorandheatsinkassembly.See“Systemboardconnectors”onpage68.
7.Followthissequencetoremovethefourscrewsthatsecuretheheatsinkassemblytothesystemboard:
Chapter8.ReplacingFRUs85