ThinkPad T420 - Symptom-To-FRU Index; Numeric Error Codes

Symptom-to-FRUindex
Thissectioncontainsfollowinginformation:
•“Numericerrorcodes”onpage47
•“Errormessages”onpage49
•“Beepsymptoms”onpage50
•“No-beepsymptoms”onpage50
•“LCD-relatedsymptoms”onpage50
•“Intermittentproblems”onpage52
•“Undeterminedproblems”onpage52
Thesymptom-to-FRUindexinthissectionlistssymptomsanderrorsandtheirpossiblecauses.Themost
likelycauseislistedrst,inboldfacetype.
Note:DotheFRUreplacementorotheractionsinthesequenceshowninthecolumnheaded“FRUor
action,insequence.”IfreplacingaFRUdoesnotsolvetheproblem,puttheoriginalpartbackinthe
computer.DonotreplaceanondefectiveFRU.
Thisindexcanalsohelpyoudetermine,duringregularservicing,whatFRUsarelikelytoneedtobe
replacednext.
AnumericerrorisdisplayedforeacherrordetectedinPOSTorsystemoperation.Inthedisplays,ncan
beanynumber.
Ifnonumericcodeisdisplayed,checkthenarrativedescriptionsofsymptoms.Ifthesymptomisnot
describedthere,goto“Intermittentproblems”onpage52
.
Note:ForadevicenotsupportedbydiagnosticcodesintheThinkPadNotebooks,seethemanualforthatdevice.
Numericerrorcodes
Table2.Numericerrorcodes
Symptomorerror
FRUoraction,insequence
0177
BadSVPdata,stopPOSTtask—Thechecksumofthe
supervisorpasswordintheEEPROMisnotcorrect.
Systemboard.
0182
BadCRC2.EntertheThinkPadSetupprogramandload
Setupdefaults.—ThechecksumoftheCRS2settingin
theEEPROMisnotcorrect.
1.RuntheThinkPadSetupprogram.PressF9,and
Entertoloadthedefaultsetting.Thensavethe
currentsettingbypressingF10.
2.Systemboard.
0183
BadCRCofSecuritySettingsinEFIVariable.Enterthe
ThinkPadSetupprogram.
0187
EAIAdataaccesserror—TheaccesstoEEPROMisfailed.
Systemboard.
0188
InvalidRFIDSerializationInformationArea.
Systemboard.
0189
InvalidRFIDcongurationinformationarea—The
EEPROMchecksumisnotcorrect.
Systemboard.
0190
Criticallow-batteryerror
1.Chargethebatterypack.
2.Batterypack.
Chapter4.Relatedserviceinformation47
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