Personal Computer User Manual

10.ReconnectthefrontaudioandUSBassemblycablestothefrontaudioconnectorandthefrontUSB
connectoronthesystemboard.See“Locatingpartsonthesystemboard”onpage9.
Whattodonext:
•Toworkwithanotherpieceofhardware,gototheappropriatesection.
•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage32.
Replacingthesystemfan
Attention:
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre
SafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoreplacethesystemfan.
Toreplacethesystemfan,dothefollowing:
1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.
2.Openthecomputercover.See“Openingthecomputercover”onpage12.
3.Removethefrontbezelbyreleasingthethreeplastictabsandpivotingthefrontbezeloutward.
Figure26.Removingthefrontbezel
4.Pivottheopticaldrivebayassemblyupward.See“Accessingthesystemboardcomponentsanddrives”
onpage12.
5.Locatethesystemfan.See“Locatingcomponents”onpage8.
6.Disconnectthesystemfancablefromthemicroprocessorfanconnectoronthesystemboard.See
“Locatingpartsonthesystemboard”onpage9.
7.Releasethefourtabsonthebottomofthesystemfanasshown,andthenliftthesystemfanstraightup
tocompletelyremoveitfromthechassis.
Chapter2.Installingorreplacinghardware27