8.Removethesixscrewsthatsecurethesystemboard.
Figure69.Removingthesixscrewsthatsecurethesystemboard
9.Liftthesystemboardoutofthechassis.
10.Removethemicroprocessorfromthefailingsystemboardandinstallitonthenewsystemboard.See
“Replacingthemicroprocessor”onpage130
.
11.Installthenewsystemboardintothechassisbyaligningthesixmountingstudsinthechassiswiththe
correspondingholesinthenewsystemboard.Then,installthesixscrewstosecurethesystemboard.
12.Installtheheatsinkandfanassemblyandconnecttheheatsinkandfanassemblycabletothenew
systemboard.See“Replacingtheheatsinkandfanassembly”onpage127.
13.InstallallmemorymodulesandPCIcardsremovedfromthefailingsystemboardonthenewsystem
board.See“Installingorreplacingamemorymodule”onpage115and“InstallingorreplacingaPCI
card”onpage113.
14.Reconnectallremainingcablestothesystemboard.See“Locatingpartsonthesystemboard”on
page107.
15.Lowertheopticaldrivebayassembly.
16.Tocompletethereplacement,goto“Completingthepartsreplacement”onpage139.
Thefailingsystemboardmustbereturnedwithamicroprocessorsocketcovertoprotectthepinsduring
shippingandhandling.
Toinstallthemicroprocessorsocketcover,dothefollowing:
1.Releasetheleversecuringthemicroprocessorretainerandopentheretainertoaccessthe
microprocessor.
134ThinkCentreHardwareMaintenanceManual
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