
Step5.Removethe3screwsthatsecurethesystemfantothemotherboard.
Step6.Disconnectthesystemfanpowercablesfromthemotherboard.
Step7.Removethesystemfanbyliftingitup.
Step8.Toinstallthenewsystemfan:
a.Lineupthenewsystemfanwiththemountingholesonthechassisandplaceitintoposition.
b.Securethenewsystemfanwiththe3screws.
c.Connectthenewsystemfanpowercabletotheconnectoronthemotherboard.
Step9.Reattachthecomputercover.
Replacingthemotherboard
Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.
Note:Itmaybehelpfultoplacethecomputerface-downonasoftatsurfaceforthisprocedure.Lenovo
recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
orotherdamage.
Toreplacethemotherboard:
Step1.Removeanymedia(disks,CDs,ormemorycards)fromthedrives,shutdowntheoperating
system,andturnoffthecomputerandallattacheddevices.
Step2.Unplugallpowercordsfromelectricaloutlets.
Step3.Disconnectallcablesattachedtothecomputer.Thisincludespowercords,input/output(I/O)
cables,andanyothercablesthatareconnectedtothecomputer.Referto“Leftandrightview”
and“Rearview”forhelpwithlocatingthevariousconnectors.
Step4.Removethecomputercover.Referto“Removingthecomputercover”.
Step5.Removetheharddiskdrive.Referto“Replacingtheharddiskdrive” .
34IdeaCentreQ190HardwareMaintenanceManual
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