Step1.Removeanymedia(disks,CDs,DVDs,ormemorycards)fromthedrives,shutdowntheoperating
system,andturnoffthecomputerandallattacheddevices.
Step2.Unplugallpowercordsfromelectricaloutlets.
Step3.Disconnectallcablesattachedtothecomputer.Thisincludespowercords,input/output(I/O)
cables,andanyothercablesthatareconnectedtothecomputer.Referto“Leftandrightview”
and“Rearview”forhelpwithlocatingthevariousconnectors.
Step4.Removethebasecover.Referto“Removingthebasecover”.
Step5.Removethehingefromthechassis.Referto“Removingthehingefromthechassis”.
Step6.Removetherearcover.Referto“Removingtherearcover”.
Step7.Removethe3screwsthatsecurethecameratothefrontbezel.
Step8.Liftupthecameraanddisconnectthedatacablefromthecamera.
Step9.Toinstallthenewcamera:
a.Connectthedatacabletothenewcamera.
b.LineuptheholesinthenewcamerawiththemountingholesontheLEDpanelandsecure
itwiththe3screws.
Step10.ReattachtherearcovertotheLEDpanel.
Step11.Reattachthehingetothechassis,andreconnectthetouchandLEDpanelcablestothe
motherboard.
Step12.Reattachthebasecoverandsecureitwiththescrews.
ReplacingtheLEDpanel
Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.
40LenovoA540/A740HardwareMaintenanceManual
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