a.Placethenewsystemfanintoposition,andthensecureittothechassiswiththreescrews.
b.Connectthesystemfanpowercabletotheconnectoronthemotherboard.
c.Usethesealingtapetosealthegapin-betweenthesystemfanandheat-sink.
Step15.ReattachtheEMIcover,middlecover,opticaldrive,standholder,footcoverandstandbase.
Replacingthespeakersystem
Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.
Note:Itmaybehelpfultoplacethecomputerface-downonasoftflatsurfaceforthisprocedure.Lenovo
recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.
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.Removethestandbase.Referto“Removingthestandbase” .
Step5.Removethefootcover.Referto“Removingthefootcover” .
Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .
Step7.Removethestandholder.Referto“Removingthestandholder”.
Step8.Removethemiddlecover.Referto“Removingthemiddlecover” .
Step9.RemovetheEMIcover.Referto“RemovingtheEMIcover” .
Step10.Disconnectthespeakercablesfromtheconnectoronthemotherboard.
Step11.Removethefourscrewsthatsecurethespeakersystemtothechassis,thenliftupthespeaker
systemtoremoveit.
Step12.Toinstallthenewspeakersystem:
40LenovoB50–35All-In-OneComputerHardwareMaintenanceManual
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