Lenovo ThinkCentre E73z - Page 96

Thissectionprovidesinstructionsonhowtoreplacethemicroprocessor.
CAUTION:
Theheatsinkandfanassemblymightbeveryhot.Turnoffthecomputerandwaitthreetove
minutestoletthecomputercoolbeforeremovingthecomputercover.
Toreplacethemicroprocessor,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Placeasoft,cleantowelorclothonthedeskorotheratsurface.Holdthesidesofyourcomputerand
gentlylayitdownsothatthescreenisagainstthesurfaceandthecoverisfacingup.
3.Removethecomputercover.See“Removingthecomputercover”onpage75.
4.Locatethemicroprocessoronthesystemboard.See“LocatingmajorFRUsandCRUs”onpage66.
5.Removethesystemboardshield.See“Removingandreinstallingthesystemboardshield”onpage83.
6.Removetheheatsinkassemblytogainaccesstothemicroprocessor.See“Replacingtheheatsink
assembly”onpage90
.
7.Pressthesmallhandle1toopentheretainer2toaccessthemicroprocessor3.
Figure28.Openingtheretainertoaccessthemicroprocessor
92ThinkCentreE73zHardwareMaintenanceManual