10.Lowerthenewmicroprocessorstraightdownintothemicroprocessorsocketonthesystemboard.
Figure24.Installingthemicroprocessor
11.Closethemicroprocessorretainerandlockitintopositionwiththesmallhandletosecurethenew
microprocessorinthesocket.
12.Reinstalltheheatsinkandfanassembly.See“Replacingtheheatsinkandfanassembly”onpage90.
13.Reconnectallcablesthatweredisconnectedfromthesystemboard.
14.Tocompletethereplacement,goto“Completingthepartsreplacement”onpage101.
Replacingthesystemboard
Attention:
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheThinkCentreUserGuide.ToobtainacopyoftheThinkCentreUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides
Thissectionprovidesinstructionsonhowtoreplacethesystemboard.
CAUTION:
Theheatsinkandmicroprocessormightbeveryhot.Turnoffthecomputerandwaitthreetove
minutestoletthecomputercoolbeforeremovingthecomputercover.
Toreplacethesystemboard,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Removethecomputercover.See“Removingthecomputercover”onpage79.
3.Laythecomputeronitssideforeasieraccesstothesystemboard.
96ThinkCentreHardwareMaintenanceManual
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