Computer Hardware User Manual

Chapter4.Generalcheckout

Attention

Thedrivesinthecomputeryouareservicingmighthavebeenrearrangedorthedrivestartupsequencemight

havebeenchanged.Beextremelycarefulduringwriteoperationssuchascopying,saving,orformatting.

Dataorprogramscanbeoverwrittenifyouselectanincorrectdrive.

Generalerrormessagesappearifaproblemorconictisfoundbyanapplicationprogram,theoperating

system,orboth.Fortheexplanationofthesemessages,refertotheinformationsuppliedwiththatsoftware

package.

BeforereplacingaFRU,ensurethatthelatestlevelofBIOSisinstalledonthesystem.Adown-levelBIOS

mightcausefalseerrorsandunnecessaryreplacementofthesystemboard.Formoreinformationonhowto

determineandobtainthelatestlevelBIOS,see“BIOSlevels”onpage469

Usethefollowingproceduretohelpdeterminethecauseofaproblem:

1.Power-offthecomputerandallexternaldevices.

2.Checkallcablesandpowercords.

3.Setalldisplaycontrolstothemiddleposition.

4.Power-onallexternaldevices.

5.Power-onthecomputer.

•Lookfordisplayederrorcodes

•Listenforbeepcodes

•Lookforreadableinstructionsoramainmenuonthedisplay.

Ifyoudidnotreceivethecorrectresponse,proceedtostep6.

Ifyoudoreceivethecorrectresponse,proceedtostep7.

6.Lookatthefollowingconditionsandfollowtheinstructions:

•IfyouhearbeepcodesduringPOST,goto“Beepsymptoms”onpage67

•IfthecomputerdisplaysaPOSTerror,goto“POSTerrorcodes”onpage68.

•Ifthecomputerhangsandnoerrorisdisplayed,turnoffthecomputerandthepower.Then,turnthe

powerandthecomputerbackon,continueatstep7.

7.RuntheDiagnosticprograms.SeeChapter5“Diagnosticprograms”onpage39.

•Ifyoureceiveanerror,replacethepartthatthediagnosticprogramcallsoutorgoto“Diagnostic

errorcodes”onpage49

•Iftheteststopsandyoucannotcontinue,replacethelastdevicetested.

Problemdeterminationtips

Duetothevarietyofhardwareandsoftwarecombinationsthatcanbeencountered,usethefollowing

informationtoassistyouinproblemdetermination.Ifpossible,havethisinformationavailablewhen

requestingassistancefromServiceSupportandEngineeringfunctions.

•Machinetypeandmodel

•Processororharddiskdriveupgrades

•Failuresymptom

–Dodiagnosticsindicateafailure?

–What,when,where,single,ormultiplesystems?