Lenovo ThinkCentre Edge 92 - Replacing the System Board

Whattodonext:
•Toworkwithanotherpieceofhardware,gototheappropriatesection.
•Tocompletethereplacement,goto“Completingthepartsreplacement”onpage160.
Replacingthesystemboard
Attention:
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstanding“Importantsafetyinformation”
onpage1.
Thissectionprovidesinstructionsonhowtoreplacethesystemboard.
CAUTION:
Theheatsinkandmicroprocessormightbeveryhot.Turnoffthecomputerandwaitthreetove
minutestoletthecomputercoolbeforeopeningthecomputercover.
Toreplacethesystemboard,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Removethecomputercover.See“Removingthecomputercover”onpage121.
3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage122.
4.Pivottheopticaldrivebayassemblyupwardtogainaccesstothesystemboard.See“Accessingthe
systemboardcomponentsanddrives”onpage124.
5.RemoveallmemorymodulesandPCIcardsthatarecurrentlyinstalled.See“Installingorreplacinga
memorymodule”onpage127and“InstallingorreplacingaPCIcard”onpage125.
6.Removetheheatsinkandfanassemblyfromthefailingsystemboard.See“Replacingtheheatsinkand
fanassembly”onpage140.
7.Carefullytakenoteofthelocationofallcableconnectionsonthesystemboardanddisconnectallthe
cables.See“Locatingpartsonthesystemboard”onpage81.
146ThinkCentreEdgeHardwareMaintenanceManual