Lenovo A540 All In One User Manual download pdf (Page 35)

Step7.Removetheheat-sinkbyliftingitup.

Attention:Placetheheat-sinkupsidedownonaﬂatsurfacetopreventthermalgreasefromcontaminating

othercomponents.

Attention:Useanalcoholpadtowipethethermalgreaseofftheheat-sinkandCPU.

Step8.Useathermalgreasesyringetoplace5dropsofgreaseonthetopofthemicroprocessor.Each

dropofgreaseshouldbe0.03ml(3tickmarksonthegreasesyringe).

Step9.Lineupthenewheat-sinkthensecureittothemotherboardwiththe8screws.

Step10.Attachthesystemfantothenewheat-sinkandsecureitwiththescrews.

Step11.Reattachthebasecoverandsecureitwiththescrews.

Replacingthespeakersystem

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.

Toreplacethespeakersystem:

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.Disconnectthespeakercablefromtheconnectorsonthemotherboard.

Chapter7.Replacinghardware29

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Lenovo A540 All In One User Manual Page 35