Lenovo ThinkCentre A70z - Removing the Power Supply Assembly

Hazardousvoltage,current,andenergylevelsarepresentinsideanycomponentthathasthislabelattached.
Therearenoservicablepartsinsidethesecomponents.
Attention
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafety
information”intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.Toobtainacopy
oftheThinkCentreSafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoreplacethepowersupplyassembly.
Removingthepowersupplyassembly
Toremovethepowersupplyassembly,dothefollowing:
1.Turnoffthecomputer.
2.Disconnectallcables,powercords,andexternaloptionsfromyourcomputer.See“Rearconnectors”
onpage65
.
3.Placeasoft,cleantowelorclothonthedeskorsurface.Holdthesidesofyourcomputerandgentlylay
itdownsothatthescreenisagainstthesurfaceandthecoverisfacingup.
4.Removethecomputercover.See“Removingthecomputercover”onpage70.
5.Disconnectthepowersupplyassemblyconnectorfromthesystemboard.See“Systemboard
connectors”onpage68
.
6.RemovetherearI/Oassembly.See“RemovingtherearI/Oassembly”onpage92.
7.Removethepowerconnectorbracketbyremovingthevescrews1thatsecureittothemainbracket.
102ThinkCentreHardwareMaintenanceManual