Lenovo C355 Specifications download pdf (Page 51)

Replacingtheheat-sink

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo

recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches

orotherdamage.

Toreplacetheheat-sink:

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” .

Step5.Removethefootcover.Referto“Removingthefootcover”.

Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .

Step7.Removethestandholder.Referto“Removingthestandholder”.

Step8.Removethemiddlecover.Referto“Removingthemiddlecover”.

Step9.RemovetheEMIcover.Referto“RemovingtheEMIcover”.

Step10.Removethesealingtapebetweenthesystemfanandheat-sink.

Step11.Removethescrewsthatsecuretheheat-sinktothemotherboardandchassis.

Step12.Removetheheat-sinkbyliftingitup.

Attention:Placetheheat-sinkupsidedownonaatsurfacetopreventthermalgreasefromcontaminating

othercomponents.

Attention:UseanalcoholpadtowipethethermalgreaseofftheCPU.

Step13.Toinstallthenewheat-sink:

a.Lineupthenewheat-sinkwithmountingholesonthemotherboard,thenplaceitintoposition.

b.Followthenumbersprintedonthenewheat-sinktosecureitinorderusingthescrews.

Chapter8.Replacinghardware45

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Lenovo C355 Specifications Page 51