a.Placethenewspeakersystemintoposition,thensecureitwithfourscrews.
b.Connectthenewspeakercablestotheconnectoronthemotherboard.
Step13.ReattachtheEMIcover,middlecover,opticaldrive,standholder,footcoverandstandbase.
Replacingthepowerswitchboard
Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.
Note:Itmaybehelpfultoplacethecomputerface-downonasoftflatsurfaceforthisprocedure.Lenovo
recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.
Toreplacethepowerswitchboard
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.Pushthelockingpinoutwardtoreleasethepowerswitchboard,thenliftupthepowerswitch
boardtoremoveit.12
Step10.Disconnectthedatacablefromthepowerswitchboard.
Step11.Toinstallthepowerswitchboard:
a.Lineupthenotchesonthenewpowerswitchboardwiththekeysintheslot.
b.Securethepowerswitchboardwiththelockingpin.
Step12.Reattachthemiddlecover,opticaldrive,standholder,footcoverandstandbase.
Chapter7.Replacinghardware41
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