Lenovo ThinkCentre A70z - Replacing the Microprocessor Fan Assembly; Removing the Microprocessor Fan Assembly

7.Goto“CompletingtheFRUinstallation”onpage108.
Replacingthemicroprocessorfanassembly
Attention
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafety
information”intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.Toobtainacopy
oftheThinkCentreSafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoreplacethemicroprocessorfanassembly.
Removingthemicroprocessorfanassembly
Toremovethemicroprocessorfanassembly,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.Disconnectthemicroprocessorfanassemblycablesfromthesystemboard.See“Systemboard
connectors”onpage68.
7.Removetheheatsinkassemblytogainaccesstothemicroprocessorfanassembly.See“Removingthe
microprocessorandheatsinkassembly”onpage85.
8.Removethefourscrewsthatattachthemicroprocessorfanassemblytothemainbracket.
Chapter8.ReplacingFRUs81