a.Lineuptheholesonthenewscalarboardwiththemountingholesonthemiddleframeand
secureitwiththe5screws.
b.Connectallthecablestothenewscalarboard.
c.Reattachthescalarshieldingtothemiddleframewiththe3screws.
Step12.ReattachtherearcovertotheLEDpanel.
Step13.Reattachthehingetothechassis,andreconnectthetouchandLEDpanelcablesbacktothe
motherboard.
Step14.Reattachthebasecoverandsecureitwiththescrews.
Replacingthetouchcontrolboard
Note:T urnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.
Toreplacethetouchcontrolboard:
Step1.Removeanymedia(disks,CDs,DVDs,ormemorycards)fromthedrives,shutdowntheoperating
system,andturnoffthecomputerandallattacheddevices.
Step2.Unplugallpowercordsfromelectricaloutlets.
Step3.Disconnectallcablesattachedtothecomput er.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.Disconnectallthetouchcablesfromthetouchcontrolboard.
Step8.Removethe2screwsthatsecurethetouchcontrolboardtothemiddleframe.
Step9.Liftupthetouchcontrolboardtoremoveit.
Step10.Toinstallthenewtouchcontr olboard:
52IdeaCentreA720HardwareMaintenanceManual