Figure17.Removingthemicroprocessor
9.Makesurethatthesmallhandleisintheraisedposition.
10.Removetheprotectivecoverthatprotectsthegoldcontactsonthenewmicroprocessor.
11.Holdthenewmicroprocessorandalignthesmalltriangleononecornerofthenewmicroprocessorwith
thecorrespondingsmalltriangleononecornerofthemicroprocessorsocket.
12.Lowerthenewmicroprocessorstraightdownintothemicroprocessorsocketonthesystemboard.
13.Lowerthesmallhandletosecurethenewmicropr ocessorinthesocket.
14.Reinstalltheheatsinkandfanassembly.See“Replacingtheheatsinkandfanassembly”onpage78.
15.Reinstallanyotherpartsorreconnectanyothercablesyouremoved.
16.Goto“CompletingtheFRUreplacement”onpage97.
Replacingthesystemboard
Attention
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre
SafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoreplacethesystemboar d.
CAUTION:
Theheatsinkandmicroprocessormightbeveryhot.Turnoffthecomputerandwait
threetoveminutestoletthecomputercoolbeforeremovingthecomputercover.
Note:Whenreplacingthesystemboard,youmustorderanewretentionmoduleforthenewsystemboard.
Makesureyouhavearetentionmoduleforthenewsystemboardbeforecontinuingthisprocedure.
Toreplacethesystemboard,dothefollowing:
1.Removethecomputercover.See“Removingthecomputercover”onpage68.
2.Removetheprimaryharddiskdrivewiththeharddiskdrivecage.See“Replacingtheprimaryhard
diskdrive”onpage83.
3.Laythecomputeronitssidetomakethesystemboar dmoreaccessible.
4.RemoveallmemorymodulesandPCIcardsthatarecurrentlyinstalled.See“Installingorreplacinga
memorymodule”onpage72and“InstallingorreplacingaPCIcard”onpage74.
5.Carefullytakenoteofthelocationofallcableconnectorsonthesyst emboardanddisconnectallthe
cables.See“Locatingpartsonthesystemboard”onpage70.
6.Removetheheatsinkandfanassemblyfromthefailingsystemboard.See“Replacingtheheatsinkand
fanassembly”onpage78.
7.Removethescrewsthatsecurethesystemboardtothechassis.
8.Carefullyremovethesystemboardoutofthechassis.
9.Removethemicroprocessorfromthefailingsystemboardandinstallitonthenewsystemboard.
See“Replacingthemicroprocessor”onpage80.
10.Installthenewretentionmoduleonthenewsystemboard.
82ThinkCentreHardwareMaintenanceManual