Lenovo ThinkServer RD650 Manuel d'utilisateur Page 191

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20.Installthenewsystemboardintothechassisandpressthesystemboardtotherearoftheserver.
Ensurethat:
Thenewsystemboardisengagedbythemountingstudonthechassis.
Therearconnectorsonthenewsystemboardareinsertedintothecorrespondingholesinthe
rearpanel.
Figure173.Installingthesystemboard
21.Removethemicroprocessorsfromtheoldsystemboardandinstallthemonthenewsystemboard.See
“Installingorreplacingthemicroprocessoronpage123.
Note:Donotdropanythingontothemicroprocessorsocketontheoldsystemboardwhileitisexposed.
Thesocketpinsmustbekeptascleanaspossible.
22.Useacleaningpadtowipethethermalgreasefromtheheatsinksandthetopofthemicroprocessors.
Disposeofthecleaningpadafterallofthethermalgreaseisremoved.
23.Useoneofthefollowingmethodstoapplyappropriateamountofthermalgreasetothetopofthe
microprocessorsintheshapeofacrossoracircleasshown.Usingtoomuchortoolittlethermalgrease
cancauseathermalproblemduetoimperfectcontactwiththecomponents.
Notes:
Donottouchthethermalgrease.
Keepthethermalgreaseoffthesystemboard.
Figure174.Applyingthethermalgreasetothetopofthemicroprocessor
24.Installtheheatsinksonthenewsystemboard.See“Installingorreplacingaheatsink”onpage121.
Chapter6.Replacinghardware177
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