Lenovo Personal Computer 4155 Uživatelský manuál stáhnout pdf (Strana 41)

Chapter4.GeneralCheckout

Attention

Thedrivesinthecomputeryouareservicingmighthavebeenrearrangedorthedrivestartupsequence

changed.Beextremelycarefulduringwriteoperationssuchascopying,saving,orformatting.Dataor

programscanbeoverwrittenifyouselectanincorrectdrive.

Generalerrormessagesappearifaproblemorconictisfoundbyanapplicationprogram,theoperating

system,orboth.Foranexplanationofthesemessages,refertotheinformationsuppliedwiththatsoftware

package.

BeforereplacinganyFRUs,ensurethatthelatestlevelofBIOSisinstalledonthesystem.Adown-levelBIOS

mightcausefalseerrorsandunnecessaryreplacementofthesystemboard.Formoreinformationonhowto

determineandobtainthelatestlevelBIOS,see“BIOSlevels”onpage251

Usethefollowingproceduretohelpdeterminethecauseoftheproblem:

1.Power-offthecomputerandallexternaldevices.

2.Checkallcablesandpowercords.

3.Setalldisplaycontrolstothemiddleposition.

4.Power-onallexternaldevices.

5.Power-onthecomputer.

•Lookfordisplayederrorcodes

•Listenforbeepcodes

•Lookforreadableinstructionsoramainmenuonthedisplay.

Ifyoudidnotreceivethecorrectresponse,proceedtostep6onpage33

Ifyoudoreceivethecorrectresponse,proceedtostep7onpage33.

6.Lookatthefollowingconditionsandfollowtheinstructions:

•IfyouhearbeepcodesduringPOST,goto“Beepsymptoms”onpage71

•IfthecomputerdisplaysaPOSTerror,goto“POSTerrorcodes”onpage72.

•Ifthecomputerhangsandnoerrorisdisplayed,continueatstep7onpage33.

7.RuntheDiagnosticprograms.SeeChapter5“Diagnostics”onpage35.

•Ifyoureceiveanerror,replacethepartthatthediagnosticprogramcallsoutorgoto“Diagnostic

errorcodes”onpage54.

•Iftheteststopsandyoucannotcontinue,replacethelastdevicetested.

Problemdeterminationtips

Duetothevarietyofhardwareandsoftwarecombinationsthatcanbeencountered,usethefollowing

informationtoassistyouinproblemdetermination.Ifpossible,havethisinformationavailablewhen

requestingassistancefromServiceSupportandEngineeringfunctions.

•Machinetypeandmodel

•Processororharddiskupgrades

•Failuresymptom

–Dodiagnosticsindicateafailure?

–What,when,where,single,ormultiplesystems?

–Isthefailurerepeatable?

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Lenovo Personal Computer 4155 Uživatelský manuál Strana 41