Step6.Removetherearcover.Referto“Removingtherearcover”.
Step7.Removethe2screwsthatsecurethetransformboardtotherearcover,andthenliftitupto
removeit.
Step8.Disconnectallthecablesfromthetransformboard.
Step9.LiftuptheWi-Ficardtoremoveitfromthetransformboard.
Step10.Toinstallthenewtransformboard:
a.InstalltheWi-Ficardtothenewtransformboard.
b.Connectallthecablestothenewtransformboard.
c.Securethetransformboardtotherearcoverwiththescrews.
Step11.ReattachtherearcovertotheLEDpanel.
Step12.Reattachthehingetothechassis,andreconnectthetouchandLEDpanelcablesbacktothe
motherboard.
Step13.Reattachthebasecoverandsecureitwiththescrews.
ReplacingtheWi-Ficard
Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.
ToreplacetheWi-Ficard:
Step1.Removeanymedia(disks,CDs,DVDs,ormemorycards)fromthedrives,shutdowntheoperating
system,andturnoffthecomputerandallattacheddevices.
Step2.Unplugallpowercordsfromelectricaloutlets.
36LenovoA540/A740HardwareMaintenanceManual
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