Lenovo System x3250 M4 - Page 209

•Themicroprocessorspeedsareautomaticallysetforthisserver;therefore,youdonothavetosetany
microprocessorfrequency-selectionjumpersorswitches.
•Ifthethermal-greaseprotectivecover(forexample,aplasticcaportapeliner)isremovedfromtheheat
sink,donottouchthethermalgreaseonthebottomoftheheatsinkorsetdowntheheatsink.Formore
informationaboutapplyingorworkingwiththermalgrease,see“Thermalgrease”onpage197
.
Note:Removingtheheatsinkfromthemicroprocessordestroystheevendistributionofthethermal
greaseandrequiresreplacingthethermalgrease.
Attention:
•Microprocessorsaretobeinstalledonlybytrainedtechnicians.
Important:Alwaysusethemicroprocessorinstallationtooltoinstallamicroprocessor.Failingtouse
themicroprocessorinstallationtoolmaydamagethemicroprocessorsocketsonthesystemboard.Any
damagetothemicroprocessorsocketsmayrequirereplacingthesystemboard.
•Donotallowthethermalgreaseonthemicroprocessorandheatsinktocomeincontactwithanything.
Contactwithanysurfacecancompromisethethermalgreaseandthemicroprocessorsocket.
•Droppingthemicroprocessorduringinstallationorremovalcandamagethecontacts.
•Donottouchthemicroprocessorcontacts;handlethemicroprocessorbytheedgesonly.Contaminants
onthemicroprocessorcontacts,suchasoilfromyourskin,cancauseconnectionfailuresbetween
thecontactsandthesocket.
•Thepinsonthesocketsarefragile.Anydamagetothepinsmightrequirereplacingthesystemboard.
Readthesafetyinformationin“Safety”onpagev
and“Installationguidelines”onpage33.
Ifyouarereplacingaservercomponentintheserver,youneedtoturnofftheserverandperipheraldevices,
anddisconnectthepowercordsandallexternalcables.
Toinstallamicroprocessorandheatsink,completethefollowingsteps.
Step1.Carefullyturntheserveronitssidesothatitislyingflat,withthecoverfacingup.
Attention:
•Whenyouhandlestatic-sensitivedevices,takeprecautionstoavoiddamagefromstatic
electricity.Fordetailsabouthandlingthesedevices,see“Handlingstatic-sensitivedevices”on
page35.
•Themicroprocessorcontactsarefragile;handlethemicroprocessorverycarefully.Donottouch
themicroprocessorcontactswithyourskin.
•Themicroprocessorfitsonlyonewayonthesocket.
Step2.Alignthemicroprocessorwiththesocket(notethealignmentmarkandthepositionofthenotches);
then,carefullyplacethemicroprocessoronthesocket,closethemicroprocessorbracketframe,
andclosethemicroprocessorreleaselatch.
Chapter6.Removingandreplacingcomponents195