Lenovo System x3250 M4 - Page 207

•Droppingthemicroprocessorduringinstallationorremovalcandamagethecontacts.
•Donottouchthemicroprocessorcontacts;handlethemicroprocessorbytheedgesonly.Contaminants
onthemicroprocessorcontacts,suchasoilfromyourskin,cancauseconnectionfailuresbetween
thecontactsandthesocket.
•Thepinsonthesocketsarefragile.Anydamagetothepinsmightrequirereplacingthesystemboard.
Readthesafetyinformationin“Safety”onpagevand“Installationguidelines”onpage33.
Ifyouarereplacingaservercomponentintheserver,youneedtoturnofftheserverandperipheraldevices,
anddisconnectthepowercordsandallexternalcables.
Toremoveamicroprocessorandheatsink,completethefollowingsteps.
Step1.Removethecover(see“Removingthecover”onpage131).
Step2.Removetheairbaffleifinstalled(see“Removingtheairbaffle”onpage135).
Step3.Removetheheatsink:
CAUTION:
Theheatsinkmaybecomeveryhotduringnormaloperation.Allowtimefortheheatsink
tocooldownbeforeyoutouchit.
a.Loosenthescrewsandalternateamongthescrewsuntiltheybreakthesealwiththe
microprocessor.
b.Pressfirmlyonthecaptivescrewsandloosenthemwithascrewdriver.
c.Useyourfingerstogentlypulltheheatsinkfromthemicroprocessor.
System board
Heat sink
Step4.Lifttheheatsinkoutoftheserver.Afterremoval,placetheheatsinkonitssideonaclean,flat
surface.
Attention:Donottouchthethermalmaterialonthebottomoftheheatsink.Touchingthethermal
materialwillcontaminateit.Ifthethermalmaterialonthemicroprocessororheatsinkbecomes
contaminated,youmustwipeoffthecontaminatedthermalmaterialonthemicroprocessororheat
sinkwiththealcoholwipesandreapplycleanthermalgreasetotheheatsink.
Chapter6.Removingandreplacingcomponents193