Toinstallthemicroprocessorsocketcover,dothefollowing:
1.Afteryouhaveremovedthemicroprocessorfromthefailingsystemboard,closethemicroprocessor
retainerandthenputthelevertothelockedpositiontosecuretheretainerinplace.
2.Notetheorientationofthesocketcover,andinstallonesideofthesocketcoverontothemicroprocessor
socket.Carefullypresstheothersideofthesocketcoverdownwarduntilthesocketcoversnaps
intoposition.
Note:Yourmicroprocessorsocketandcovermightlookslightlydifferentfromtheillustration.
Figure105.Installingthesocketcoverontothemicroprocessorsocket
3.Carefullycheckthefourcornersofthesocketcovertoensurethatthecoverisseatedsecurely.
4.Followanyadditionalinstructionsincludedwiththereplacementpartyoureceived.
Replacingthesystemfanassembly
Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstanding“Important
safetyinformation”onpage1.
Thissectionprovidesinstructionsonhowtoreplacethesystemfanassembly.
Toreplacethesystemfanassembly,dothefollowing:
1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.
2.Removethecomputercover.See“Removingthecomputercover”onpage124.
3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage124.
4.Pivotthedrivebayassemblyupwardtogainaccesstothesystemfanassembly.See“Accessingthe
systemboardcomponentsanddrives”onpage126.
5.Removetheharddiskdriveforeasieraccesstothesystemfanassembly.See“Replacingthehard
diskdrive”onpage131
.
6.Removetheheatsinkfanduct.See“Replacingtheheatsinkandfanassembly”onpage148.
7.Recordthecableroutinganddisconnectthesystemfanassemblycablefromthepowerfanconnector
onthesystemboard.See“Locatingpartsonthesystemboard”onpage79
.
8.Thesystemfanassemblyisattachedtothechassisbyfourrubbermounts.Removethesystemfan
assemblybycuttingthefourrubbermounts1andliftingthesystemfanassemblyoutofthechassis.
Note:Thenewsystemfanassemblywillhavefournewrubbermountsattached.
158ThinkCentreE73HardwareMaintenanceManual
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