Lenovo ThinkServer RD550 Manual de usuario Pagina 156

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19.Installthenewsystemboardintothechassisandpressthesystemboardtotherearoftheserver.
Ensurethat:
Thenewsystemboardisengagedbythemountingstudonthechassis.
Therearconnectorsonthenewsystemboardareinsertedintothecorrespondingholesinthe
rearpanel.
Figure122.Installingthesystemboard
20.Removethemicroprocessorsfromtheoldsystemboardandinstallthemonthenewsystemboard.See
“Installingorreplacingthemicroprocessoronpage107.
Note:Donotdropanythingontothemicroprocessorsocketontheoldsystemboardwhileitisexposed.
Thesocketpinsmustbekeptascleanaspossible.
21.Useacleaningpadtowipethethermalgreasefromtheheatsinksandthetopofthemicroprocessors.
Disposeofthecleaningpadafterallofthethermalgreaseisremoved.
22.Useoneofthefollowingmethodstoapplyappropriateamountofthermalgreasetothetopofthe
microprocessorsintheshapeofacrossoracircleasshown.Usingtoomuchortoolessthermalgrease
cancauseathermalproblemduetoimperfectcontactwiththecomponents.
Notes:
Donottouchthethermalgrease.
Keepthethermalgreaseoffthesystemboard.
Figure123.Applyingthethermalgreasetothetopofthemicroprocessor
142ThinkServerRD550UserGuideandHardwareMaintenanceManual
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