6.Positionthenewcoverpresenceswitchsothatthescrewholeinthecoverpresenceswitchisaligned
withthecorrespondingholeinthechassis.Theninstallthescrewtosecurethecoverpresence
switchtothechassis.
Figure50.Installingthenewcoverpresenceswitch
7.Reconnectthecoverpresenceswitchcabletothesystemboard.See“Locatingpartsonthesystem
board”onpage73.
Whattodonext:
•Toworkwithanotherpieceofhardware,gototheappropriatesection.
•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage131.
ReplacingtheWi-Fiunits
Attention:Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe
“Importantsafetyinformation”onpage1.
ThissectionprovidesinstructionsonhowtoreplacetheWi-Fiunits.TheWi-FiunitsincludeaWi-Fiadapter
card,aWi-Ficardmodule,andarearWi-Fiantennacable.
ReplacingtheWi-Fiunitsinvolvesthefollowingoperations:
•“RemovingtheWi-Fiadaptercard”onpage120
•“RemovingtheWi-Ficardmodule”onpage122
•“InstallingtheWi-Fiunits”onpage124
RemovingtheWi-Fiadaptercard
ToremoveaWi-Fiadaptercard,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
120ThinkCentreM73HardwareMaintenanceManual
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