Lenovo ThinkStation C20 - Chapter 4. General Checkout; Problem Determination Tips

Chapter4.GeneralCheckout
Attention
Thedrivesinthecomputeryouareservicingmighthavebeenrearrangedorthedrivestartupsequencemight
havebeenchanged.Beextremelycarefulduringwriteoperationssuchascopying,saving,orformatting.
Dataorprogramscanbeoverwrittenifyouselectanincorrectdrive.
Generalerrormessagesappearifaproblemorconictisfoundbyanapplicationprogram,theoperating
system,orboth.Foranexplanationofthesemessages,refertotheinformationsuppliedwiththatsoftware
package.
BeforereplacingaFRU,ensurethatthelatestlevelofBIOSisinstalledonthesystem.Adown-levelBIOS
mightcausefalseerrorsandunnecessaryreplacementofthesystemboard.Formoreinformationonhowto
determineandobtainthelatestlevelBIOS,see“BIOSlevels”onpage229
.
Usethefollowingproceduretohelpdeterminethecauseofaproblem:
1.Turnoffthecomputerandallexternaldevices.
2.Checkallcablesandpowercords.
3.Setalldisplaycontrolstothemiddleposition.
4.Turnonallexternaldevices.
5.Turnonthecomputer.
•Lookfordisplayederrorcodes
•Listenforbeepcodes
•Lookforreadableinstructionsoramainmenuonthedisplay.
Ifyoudidnotreceivethecorrectresponse,proceedtostep6onpage31
.
Ifyoudoreceivethecorrectresponse,proceedtostep7onpage31.
6.Lookatthefollowingconditionsandfollowtheinstructions:
•IfyouhearbeepcodesduringPOST,goto“Beepsymptoms”onpage63
.
•IfthecomputerdisplaysaPOSTerror,goto“POSTerrorcodes”onpage64.
•Ifthecomputerhangsandnoerrorisdisplayed,continueatstep7onpage31.
7.RuntheDiagnosticprograms.SeeChapter5“Diagnostics”onpage33.
•Ifyoureceiveanerror,replacethepartthatthediagnosticprogramcallsoutorgoto“Diagnostic
errorcodes”onpage46.
•Iftheteststopsandyoucannotcontinue,replacethelastdevicetested.
Problemdeterminationtips
Duetothevarietyofhardwareandsoftwarecombinationsthatcanbeencountered,usethefollowing
informationtoassistyouinproblemdetermination.Ifpossible,havethisinformationavailablewhen
requestingassistancefromServiceSupportandEngineeringfunctions.
•Machinetypeandmodel
•Processororharddiskdriveupgrades
•Failuresymptom
–Dodiagnosticsindicateafailure?
–What,when,where,single,ormultiplesystems?
–Isthefailurerepeatable?
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