3.Removethedirectcoolingairbaffle.See“Removingandreinstallingthedirectcoolingairbaffle”on
page128.
4.Laythecomputeronitssideforeasieraccesstothesystemboard.
5.Removethemulti-functionbrackets.See“Removingandreinstallingthemulti-functionbrackets”on
page139.
6.Removethefrontfanassemblies.See“Replacingthefrontfanassemblies”onpage141.
7.Removetherearfanassemblies.See“Replacingtherearfanassembly”onpage167.
8.Removethepowersupplyassembly.See“Replacingthepowersupplyassembly”onpage143.
9.Removetheflexadapterthatisinstalled.See“Installingorreplacingaflexadapter”onpage146.
10.RemovethePCIcardsthatareinstalled.See“InstallingorreplacingaPCIcard”onpage149.
11.Removethefull-lengthPCIExpresscardthatisinstalled.See“Installingorreplacingafull-lengthPCI
Expresscard”onpage154.
12.Removethememorymodulesthatareinstalled.See“Installingorreplacingamemorymodule”on
page163.
13.Removetheheatsinkandfanassemblies.See“Replacingtheheatsinkandfanassemblies”on
page165.
14.Recordthecableroutingandcableconnections,andthendisconnectallcablesfromthesystemboard.
See“Locatingpartsonthesystemboard”onpage34.
15.Pressthemetalretainertoreleasethefailingsystemboard.Thenpushthefailingsystemboardtoward
themetalretainerandcarefullyliftthesystemboardoutofthechassis.
Note:Carefullyhandlethesystemboardbyitsedges.
Figure100.Removingthesystemboard
16.Removethemicroprocessorfromthefailingsystemboard,andtheninstallitontothenewsystem
board.See“Installingorreplacingthemicroprocessor”onpage168
.
178ThinkStationP900HardwareMaintenanceManual
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