Lenovo ThinkCentre A70z - Installing a System Board

3.Placeasoft,cleantowelorclothonthedeskorsurface.Holdthesidesofyourcomputerandgentlylay
itdownsothatthescreenisagainstthesurfaceandthecoverisfacingup.
4.Removethecomputercover.See“Removingthecomputercover”onpage70.
5.Openthesystemboardshielding.See“Openingthesystemboardshielding”onpage71.
6.Notethelocationsofallcableconnectionsonthesystemboardanddisconnectallcables.See“System
boardconnectors”onpage68
.
7.Removethemicroprocessorandheatsinkassemblyfromthesystemboard.See“Removingthe
microprocessorandheatsinkassembly”onpage85.
8.Removethefourscrewsthatattachthesystemboardtothemainbracket1.
9.Carefullyliftthesystemboardoutofthechassis.
10.Removethememorymodulesfromthefailingsystemboardandinstalltheminthesamelocationson
thenewsystemboard.
Installingasystemboard
Toinstallasystemboard,dothefollowing:
1.Installthenewsystemboardintothechassisandalignthescrewholeswiththoseinthechassis.
2.Insertandtightenthefourscrews1thatsecurethesystemboardtothemainbracket.
Chapter8.ReplacingFRUs89