Lenovo computer hardware 9421 Manual

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480 Pages English

Lenovo computer hardware 9421
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480
Attention
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe"Importantsafetyinformation"
intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre
SafetyandWarrantyGuide,goto:http://www.lenovo.com/support
Note:Whenreplacingthesystemboardyoumustalsoorderanewretentionmoduleforthenewsystem
board.Makesureyouhavearetentionmoduleforthenewsystemboardbeforecontinuingwiththis
procedure.
Thissectionprovidesinformationonhowtoremoveandreplacethesystemboard.
Toremoveorreplacethesystemboard,dothefollowing:
1.Removethecover.See"Removingthecover"onpage94.
2.Liftthefanductofftheheatsinkfan.
3.RemoveanyPCIadaptercardsinstalledinthePCIconnectors.
4.Youmighthavetoremovethedrivebayassemblytoaccessthesystemboard.See"Accessingsystem
boardcomponentsanddrives"onpage96.
5.Takenoteofthelocationofallcableconnectionsonthesystemboardanddisconnectallcables.See
"Locatingpartsonthesystemboard"onpage95.
6.Removetheharddiskdrive.See"Replacingtheharddiskdrive"onpage106.
7.Removethescrewsthatsecurethesystemboardtothechassis.
8.Liftthesystemboardoutofthechassis.
9.Removethememorymodulesfromthefailingsystemboardandinstalltheminthesamelocationon
thenewsystemboard.
10.Rotatehandle1toreleasetheheatsinkclampandthendisengagetheclampfromtheplasticretention
bracket.
11.Lifttheheatsinkandfanassemblyoffthefailingsystemboard.Placetheheatsinkonitssidesothatthe
thermalgreasedoesnotcomeincontactwithanything.
Note:Youmighthavetogentlytwisttheheatsinktofreeitfromthemicroprocessor.
12.Removetheretentionmodulefromtherearofthefailingsystemboardandinstallitinthesameposition
onthenewsystemboard.
Chapter9ReplacingFRUs(Types7057,7062,7092,9342,9344,9354,9426,9486,9624,9707,9787,9804,9945)101
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