Lenovo ThinkCentre Edge 91z - Opening the System Board Shield Window

7.Removethetwoscrews1thatsecurethecardreader,andthenliftthecardreaderoutofthecomputer.
Figure33.Removingthecardreader
8.Toreinstallthecardreader,alignthescrewholesinthenewcardreaderwiththoseinthecomputer,and
theninstallthetwoscrewstosecurethecardreader.
9.Connectthecardreadercabletothenewcardreader.
10.Reinstallthesystemboardshield.See“Removingandreinstallingthesystemboardshield”onpage102.
11.Goto“Completingthepartsreplacement”onpage127.
Openingthesystemboardshieldwindow
Attention
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafety
information”intheThinkCentreEdgeSafetyandWarrantyGuidethatcamewithyourcomputer.Toobtaina
copyoftheThinkCentreEdgeSafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoopenandclosethesystemboardshieldwindow.
Toopenandclosethesystemboardshieldwindow,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Placeasoft,cleantowelorclothonthedeskorotheratsurface.Holdthesidesofyourcomputerand
gentlylayitdownsothatthescreenisagainstthesurfaceandthecoverisfacingup.
3.Removethecomputercover.See“Removingthecomputercover”onpage95.
4.Locatethesystemboardshieldwindow.See“FRUlocations”onpage86.
112ThinkCentreHardwareMaintenanceManual