Lenovo ThinkCentre Edge 91 - Replacing the power supply assembly

Foradditionalinformation,refertotheLenovoSolutionCenterhelpsystem.
Note:Ifyouareunabletoisolateandrepairtheproblemyourselfafterrunningtheprogram,saveandprint
theloglescreatedbytheprogram.YouwillneedthelogleswhenyouspeaktoaLenovotechnical
supportrepresentative.
PC-DoctorforDOS
YoucanalsodownloadthelatestversionofthePC-DoctorforDOSdiagnosticprogramfrom
http://www.lenovo.com/support.ThePC-DoctorforDOSdiagnosticprogramrunsindependentlyofthe
Windowsoperatingsystem.UsethePC-DoctorforDOSdiagnosticprogramifyouareunabletostartthe
Windowsoperatingsystem.YoucanrunthePC-DoctorforDOSdiagnosticprogramfromadiagnostic
discthatyoucreated.
Creatingadiagnosticdisc
Thissectionprovidesinstructionsonhowtocreateadiagnosticdisc.
Tocreateadiagnosticdisc,dothefollowing:
1.Downloadaself-startingbootablediscimage(knownasanISOimage)ofthediagnosticprogramfrom:
http://www.lenovo.com/support
2.UseanydiscburningsoftwaretocreateadiagnosticdiscwiththeISOimage.
Runningthediagnosticprogramfromthediagnosticdisc
Thissectionprovidesinstructionsonhowtorunthediagnosticprogramfromthediagnosticdiscthat
youcreated.
Torunthediagnosticprogramfromthediagnosticdiscthatyoucreated,dothefollowing:
1.Makesureyourcomputeristurnedoff.
2.RepeatedlypressandreleasetheF12keywhenturningonthecomputer.WhentheStartupDevice
Menuwindowopens,releasetheF12key.
3.Insertthediagnosticdiscintotheopticaldrive.
4.SelecttheopticaldrivewiththediagnosticdiscasthestartupdeviceandpressEnter.Thediagnostic
programopens.
5.Followtheinstructionsonthescreentorunthedesireddiagnostictest.Foradditionalhelp,press
theF1key.
6.Removethediagnosticdiscfromtheopticaldriveaftercompletingthediagnostictest.
Navigatingthroughthediagnosticprograms
Usethecursormovementkeystonavigatewithinthemenus.
•TheEnterkeyisusedtoselectamenuitem.
•TheEsckeyisusedtobackuptothepreviousmenu.
•Foronlinehelp,selectF1.
Runningtests
Therearefourwaystorunthediagnostictests.
•Usingthecursormovementkeys,highlightRunNormalTestorRunQuickTestfromtheDiagnostics
menuandthenpressEnter.Thisautomaticallyrunsapre-denedgroupoftestsfromeachtestcategory.
40ThinkCentreHardwareMaintenanceManual