Lenovo B40-30 All-in-One Manuel d'utilisateur Page 48

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Step17.Removethesevenscrewsthatsecurethemotherboardtothechassisandliftthemotherboard
uptoremoveit.
Step18.Toinstallthenewmotherboard:
a.Lineuptheholesonthenewmotherboardwiththemountingholeschassisandplacethenew
motherboardintoposition.
b.Usethescrewstosecurethenewmotherboardtothechassis.
c.Connectallthecablestothenewmotherboard.
Step19.Installthefollowingpartstothenewmotherboard:
Wi-Ficard
TV-Tunercard
CPU
Heat-sink
Memorymodule
TV-Tunerantennajack
Step20.ReattachtheEMIcover,middlecover,opticaldrive,standholder,footcoverandstandbase.
Removingthereardeco
Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.
Note:Itmaybehelpfultoplacethecomputerface-downonasoftflatsurfaceforthisprocedure.Lenovo
recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.
Toremovethereardeco:
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.
42LenovoB40–30All-In-OneComputerHardwareMaintenanceManual
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