Step9.RemovetheEMIcover.Referto“RemovingtheEMIcover” .
Step10.Removetheheat-sink.Referto“Replacingtheheatsink” .
Step11.Removethescrewthatsecurescameratothefrontbezel.
Step12.Liftupthecameraanddisconnectthedatacablefromthecamera.
Step13.Removethetwoscrewsthatsecurethecameratothebracket,thenputasidethebracket.
Step14.Toinstallthenewcamera:
a.Lineupthenewcamerawiththebracket,thensecurethecameratothebracketwiththe
twoscrews.
b.Connectthedatacabletothenewcamera.
c.Lineuptheholesinthenewcamerawiththemountingholesonthefrontbezelandsecureit
withthescrew.
Step15.Reattachtheheat-sink,EMIcover,middlecover,opticaldrive,standholder,footcoverandstand
base.
ReplacingtheCPU
Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.
Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo
recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.
ToreplacetheCPU
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” .
48LenovoC540HardwareMaintenanceManual
