Lenovo ThinkCentre Edge 91 - Replacing the Rear Fan Assembly

5.Carefullypresstheothersideofthesocketcoverdownwardsuntilthesocketcoversnapsintoplace.
Figure30.Securingthesocketcover
6.Carefullycheckthefourcornersofthesocketcovertomakesurethatthecoverissecuredinthe
microprocessorsocket.
7.Lowerthemicroprocessorretainerandthenlowerthelevertosecuretheretainer.Makesurethe
leverislockedintoposition.
8.Followanyadditionalinstructionsincludedwiththereplacementpartyoureceived.
Replacingtherearfanassembly
Attention:
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre
SafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoreplacetherearfanassembly.
Toreplacetherearfanassembly,dothefollowing:
1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.
2.Removethecomputercover.See“Removingthecomputercover”onpage79.
3.Locatetherearfanassembly.See“Locatingcomponents”onpage76.
4.Disconnecttherearfanassemblycablefromthesystemfanconnectoronthesystemboard.See
“Locatingpartsonthesystemboard”onpage77.
Chapter8.ReplacingFRUs(MachineTypes:1852,1853,and1855)101