Thermalgrease
Thethermalgreasemustbereplacedwhenevertheheatsinkhasbeenremovedfromthetopofthe
microprocessorandisgoingtobereusedorwhendebrisisfoundinthegrease.Usethisinformationto
replacedamagedorcontaminatedthermalgreaseonthemicroprocessorandheatsink.
Whenyouareinstallingtheheatsinkonthesamemicroprocessorthatitwasremovedfrom,makesure
thatthefollowingrequirementsaremet:
•Thethermalgreaseontheheatsinkandmicroprocessorisnotcontaminated.
•Additionalthermalgreaseisnotaddedtotheexistingthermalgreaseontheheatsinkandmicroprocessor.
Notes:
•Readthesafetyinformationin“Safety”onpagev.
•Readthe“Installationguidelines”onpage35.
•Read“Handlingstatic-sensitivedevices”onpage37.
Toreplacedamagedorcontaminatedthermalgreaseonthemicroprocessorandheatsink,completethe
followingsteps.
Step1.Placetheheatsinkonacleanworksurface.
Step2.Removethecleaningpadfromitspackageandunfolditcompletely.
Step3.Usethecleaningpadtowipethethermalgreasefromthebottomoftheheatsink.
Note:Makesurethatallofthethermalgreaseisremoved.
Step4.Useacleanareaofthecleaningpadtowipethethermalgreasefromthemicroprocessor;then,
disposeofthecleaningpadafterallofthethermalgreaseisremoved.
Microprocessor
0.02 mL of thermal
grease
Figure75.9uniformlyspaceddotsonthetopofthemicroprocessor
Step5.Usethethermal-greasesyringetoplace9uniformlyspaceddotsof0.02mLeachonthetopof
themicroprocessor.Theoutermostdotsmustbewithinapproximately5mmoftheedgeofthe
microprocessor.Thisistoensureuniformdistributionofthegrease.
Figure76.Thermal-greasesyringe
Chapter2.Installingoptionaldevices91
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