Personal Computer User Manual

Step7.Puttheheadofaatheadscrewdriverbetweenthemiddleframeandtherearcoverasshown.
Thenusingthescrewdriverasaleverandthemiddleframemetalbarasthefulcrum,prisetherear
coverawayfromthemiddleframe.1
Fulcrum
Le ve r
1
Step8.Workingaroundtheedgeinananti-clockwisedirection,useyourngerstopriseuptherearcover.
Therearcoverispinnedintoplace,useshort,sharpmovementstopriseitup.2
2
Step9.Pressdownthehingeandslideouttherearcover.
Step10.Toreattachtherearcover:
a.Raisethehinge,lineuptherearcoverwiththeLEDpanelandslideitbackintoposition.
b.PresstheedgeofrearcovertolockthecovertotheLEDpanelwiththepins.
c.Slidethereardecobackintoposition.
Step11.Reattachthehingetothechassis,andreconnectthetouchandLEDpanelcablesbacktothe
motherboard.
Step12.Reattachthebasecoverandsecureitwiththescrews.
Replacingthescalarboard
Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.
Toreplacethescalarboard
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.Removethe3screwsthatsecurethescalarshieldingtothemiddleframe.
50IdeaCentreA720HardwareMaintenanceManual