Lenovo C240 All-in-One User Manual Page 45

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Step5.Disconnectthepowerswitchboardcablefromtheconnectoronthemotherboard.1
Step6.Removethescrewthatsecuresthepowerswitchboardtotherearcoverandliftupthepower
switchboardtoremoveit.2
1
2
Step7.Toinstallthepowerswitchboard:
a.Lineuptheholesonthenewpowerswitchboardwiththemountingholesontherearcover
andsecurethenewpowerswitchboardwiththescrews.
b.Connectthedatacabletotheconnectoronthenewmotherboard.
Step8.Reattachtherearcoverandsecureitwiththescrews.
Replacingthemotherboard
Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingtherearcover.
Toreplacethemotherboard:
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.Removetherearcover.Referto“Removingtherearcover”.
Step5.Removeallmemorymodules.Referto“Replacingamemorymodule”.
Step6.Removetheheat-sink.Referto“Replacingtheheat-sink”.
Step7.RemovetheWi-Ficard.Referto“ReplacingtheWi-Ficard”.
Chapter8.Replacinghardware39
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