Lenovo T420i Technical Information Page 49
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- Table of contents
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Rated. / 5. Based on customer reviews
Symptom-to-FRUindex
Thissectioncontainsfollowinginformation:
•“Numericerrorcodes”onpage43
•“Errormessages”onpage45
•“Beepsymptoms”onpage46
•“No-beepsymptoms”onpage46
•“LCD-relatedsymptoms”onpage46
•“Intermittentproblems”onpage48
•“Undeterminedproblems”onpage48
Thesymptom-to-FRUindexinthissectionlistssymptomsanderrorsandtheirpossiblecauses.Themost
likelycauseislistedrst,inboldfacetype.
Note:DotheFRUreplacementorotheractionsinthesequenceshowninthecolumnheaded“FRUor
action,insequence.”IfreplacingaFRUdoesnotsolvetheproblem,puttheoriginalpartbackinthe
computer.DonotreplaceanondefectiveFRU.
Thisindexcanalsohelpyoudetermine,duringregularservicing,whatFRUsarelikelytoneedtobe
replacednext.
AnumericerrorisdisplayedforeacherrordetectedinPOSTorsystemoperation.Inthedisplays,ncan
beanynumber.
Ifnonumericcodeisdisplayed,checkthenarrativedescriptionsofsymptoms.Ifthesymptomisnot
describedthere,goto“Intermittentproblems”onpage48
.
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
InvalidRFIDcongurationinformationarea—The
EEPROMchecksumisnotcorrect.
Systemboard.
0190
Criticallow-batteryerror
1.Chargethebatterypack.
2.Batterypack.
Chapter4.Relatedserviceinformation43
- ThinkPadT420andT420i 1
- HardwareMaintenanceManual 1
- FourthEdition(November2011) 2
- ©CopyrightLenovo2011 2
- Contents 3
- Chapter9.Locations........125 4
- AppendixA.Notices.........167 4
- Aboutthismanual 5
- Chapter1.Safetyinformation 7
- Electricalsafety 8
- Safetyinspectionguide 9
- Groundingrequirements 10
- Chapter1.Safetyinformation5 11
- .Safetyinformation7 13
- Chapter1.Safetyinformation9 15
- Chapter1.Safetyinformation11 17
- .Safetyinformation13 19
- .Safetyinformation15 21
- Chapter1.Safetyinformation17 23
- .Safetyinformation19 25
- .Safetyinformation21 27
- StrategyforreplacingFRUs 29
- Howtouseerrormessage 30
- Productdenition 31
- Chapter3.Generalcheckout 33
- Whattodorst 34
- Checkoutguide 35
- LenovoThinkVantageT oolbox 37
- FRUtests 39
- Powersystemcheckout 40
- Checkingtheacpoweradapter 40
- Checkingoperationalcharging 40
- Checkingthebatterypack 41
- Checkingthebackupbattery 41
- Voltage(Vdc) 42
- Red+2.5to+3.2 42
- Passwords 44
- Power-onpassword 44
- Hard-diskpassword 44
- Supervisorpassword 45
- Powermanagement 47
- Screenblankmode 47
- Sleep(standby)mode 47
- Hibernationmode 47
- Symptom-to-FRUindex 49
- Numericerrorcodes 49
- Errormessages 51
- Beepsymptoms 52
- No-beepsymptoms 52
- LCD-relatedsymptoms 52
- .Relatedserviceinformation47 53
- Intermittentproblems 54
- Undeterminedproblems 54
- Chapter5.Statusindicators 55
- .Statusindicators51 57
- Chapter6.Fnkeycombinations 59
- .Fnkeycombinations55 61
- Screwnotices 63
- Retainingserialnumbers 64
- RetainingtheUUID 65
- 1010Batterypack 69
- 1020ExpressCardblankbezel 70
- 3tocompletelyremoveit 71
- Capturescrew(1) 72
- 1050DIMMslotcover 75
- 1080Keyboard 79
- Installationstepsofkeyboard 80
- 1.Attachthekeyboardconnector 80
- .RemovingandreplacingaFRU75 81
- 1100Backupbattery 85
- .RemovingandreplacingaFRU85 91
- .RemovingandreplacingaFRU87 93
- 1130SmartCard 94
- 1140Modemdaughtercard(MDC) 96
- 1150Speakerassembly 97
- 1160LCDunit 99
- StepScrew(quantity)Color 100
- Black0.181Nm 100
- (1.85kgfcm) 100
- Black0.392Nm 101
- (4.0kgfcm) 101
- 1170Fanassembly 103
- 3tosecuretheCPU 107
- .RemovingandreplacingaFRU103 109
- 1200Magnesiumstructureframe 112
- .RemovingandreplacingaFRU107 113
- 1220mSATAsolidstatedrive 116
- .RemovingandreplacingaFRU111 117
- 2010LCDbezelassembly 118
- 2020LEDboard 119
- 2030Integratedcamera 121
- 2040LCDpanelandLCDcable 123
- 2050Cameracable 125
- .RemovingandreplacingaFRU121 127
- .RemovingandreplacingaFRU123 129
- Chapter9.Locations 131
- Rearview 133
- Bottomview 134
- Chapter10.Partslist 135
- .Partslist131 137
- .Partslist133 139
- .Partslist135 141
- .Partslist137 143
- .Partslist139 145
- .Partslist141 147
- .Partslist143 149
- .Partslist145 151
- .Partslist147 153
- .Partslist149 155
- .Partslist151 157
- .Partslist153 159
- Keyboard 160
- .Partslist155 161
- Miscellaneousparts 162
- .Partslist157 163
- Powercords 165
- Recoverydiscs 166
- Chapter10.Partslist161 167
- Chapter10.Partslist163 169
- Chapter10.Partslist165 171
- Commonservicetools 172
- AppendixA.Notices 173
- Electronicemissionsnotices 174
- Trademarks 175
- *0A60007_03* 178
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