Lenovo C470 All in One User Manual download pdf (Page 46)

Step9.RemovetheEMIcover.Referto“RemovingtheEMIcover”.

Step10.Removethespeakersystem.Referto“Replacingthespeakersystem” .

Step11.Removethescrewthatsecuresfrontindicatorboardtothefrontbezel.

Step12.Disconnectthedatacablefromthefrontindicatorboard.

Step13.Liftupthefrontindicatorboardtoremoveit.

Step14.Toinstallthefrontindicatorboard:

a.Lineuptheholeonthenewfrontindicatorboardwiththemountingholeonthechassis,

thenplaceitintoposition.

b.Securethefrontindicatorboardwiththescrew.

c.Connectthepowercabletothenewfrontindicatorboard.

Step15.Reattachthespeakersystem,EMIcover,middlecover,opticaldrive,standholder,footcover

andstandbase.

Replacingthemotherboard

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftﬂatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches

orotherdamage.

Toreplacethemotherboard:

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.Removethestandbase.Referto“Removingthestandbase” .

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Lenovo C470 All in One User Manual Page 46