Lenovo ThinkCentre Edge 91 - Replacing the System Fan Assembly

Whattodonext:
•Toworkwithanotherpieceofhardware,gototheappropriatesection.
•Tocompletethereplacement,goto“Completingthepartsreplacement”onpage57.
Replacingthesystemfanassembly
Attention:
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
onpagev.
Thissectionprovidesinstructionsonhowtoreplacethesystemfanassembly.
Toreplacethesystemfanassembly,dothefollowing:
1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.
2.Removethecomputercover.See“Removingthecomputercover”onpage30.
3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage30.
4.Pivotthedrivebayassemblyupwardtogainaccesstothesystemfanassembly.See“Accessingthe
systemboardcomponentsanddrives”onpage32.
5.Removetheharddiskdriveforeasieraccesstothesystemfanassembly.See“Replacingthehard
diskdrive”onpage38.
6.Removetheheatsinkfanduct.See“Replacingtheheatsinkandfanassembly”onpage48.
7.Notethecableroutinganddisconnectthesystemfanassemblycablefromthepowerfanconnectoron
thesystemboard.See“Locatingpartsonthesystemboard”onpage12.
8.Thesystemfanassemblyisattachedtothechassisbyfourrubbermounts.Removethesystemfan
assemblybycuttingthefourrubbermounts1andliftingthesystemfanassemblyoutofthechassis.
Note:Thenewsystemfanassemblywillhavefournewrubbermountsattached.
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Figure40.Removingthesystemfanassembly
54ThinkCentreEdgeUserGuide