•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage183.
Replacingthecoverpresenceswitch(intrusionswitch)
Attention:DonotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingtheChapter
1“Readthisfirst:Importantsafetyinformation”onpage1
.
Toreplacethecoverpresenceswitch(alsoknownasintrusionswitch),dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Removethecomputercover.See“Removingthecomputercover”onpage111.
3.Laythecomputeronitssideforeasieraccesstothecoverpresenceswitchbracket.
4.Locatethecoverpresenceswitchbracket.See“Locatingcomponents”onpage30.
5.Notetheroutingofthecoverpresenceswitchcable,andthendisconnectthecoverpresenceswitch
cablefromthesystemboard.See“Locatingpartsonthesystemboard”onpage34.
6.Pivotthetab1onthecoverpresenceswitchbrackettotheleftasshown.Then,removethebracket
togetherwiththecoverpresenceswitchfromthechassis.
Figure28.Removingthecoverpresenceswitchbracket
126ThinkStationP900HardwareMaintenanceManual
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