Lenovo ThinkPad T410s User Manual Page 58
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Table6.LCD-relatedsymptoms
Symptomorerror
FRUoraction,insequence
Nobeep,power-onindicatoron,andablankLCDduring
POST.
Systemboard.
•LCDbacklightnotworking.
•LCDtoodark.
•LCDbrightnesscannotbeadjusted.
•LCDcontrastcannotbeadjusted.
1.ReseattheLCDconnectors.
2.LCDassembly.
3.Systemboard.
•LCDscreenunreadable.
•Charactersmissingpixels.
•Screenabnormal.
•Wrongcolordisplayed.
1.Seeimportantnotefor“LCD-relatedsymptoms.”
2.ReseatallLCDconnectors.
3.LCDassembly.
4.Systemboard.
HorizontalorverticallinesdisplayedonLCD.LCDassembly.
Intermittentproblems
Intermittentsystemhangproblemscanbeduetoavarietyofcausesthathavenothingtodowithahardware
defect,suchascosmicradiation,electrostaticdischarge,orsoftwareerrors.FRUreplacementshouldbe
consideredonlywhenaproblemrecurs.
Whenanalyzinganintermittentproblem,dothefollowing:
1.Runthediagnostictestforthesystemboardinloopmodeatleast10times.
2.Ifnoerrorisdetected,donotreplaceanyFRUs.
3.Ifanyerrorisdetected,replacetheFRUshownbytheFRUcode.Rerunthetesttoverifythatno
moreerrorsexist.
Undeterminedproblems
Ifthediagnostictestsdidnotidentifytheadapterordevicethathasfailed,ifwrongdevicesareinstalled,
orifthesystemsimplyisnotoperating,followtheseprocedurestoisolatethefailingFRU(donotisolate
FRUsthathavenodefects).
Verifythatallattacheddevicesaresupportedbythecomputer.
Verifythatthepowersupplybeingusedatthetimeofthefailureisoperatingcorrectly.(See“Powersystem
checkout”onpage35.)
1.Turnoffthecomputer.
2.VisuallycheckeachFRUfordamage.ReplaceanydamagedFRU.
3.Removeordisconnectallofthefollowingdevices:
a.Non-ThinkPaddevices
b.Devicesattachedtothedockingstationortheportreplicator
c.Printer,mouse,andotherexternaldevices
d.Batterypack
e.Harddiskdrive
f.Externaldiskettedriveoropticaldrive
g.DIMM
h.Opticaldiskordisketteintheinternaldrive
i.PCCards
4.Turnonthecomputer.
5.Determinewhethertheproblemhasbeensolved.
6.Iftheproblemdoesnotrecur,reconnecttheremoveddevicesoneatatimeuntilyoundthefailingFRU.
52HardwareMaintenanceManual
- HardwareMaintenanceManual 1
- EighthEdition(April2012) 2
- ©CopyrightLenovo2009,2012 2
- Contents 3
- Chapter9.Locations........105 4
- AppendixA.Notices.........157 4
- Aboutthismanual 5
- Chapter1.Safetyinformation 7
- Electricalsafety 8
- Safetyinspectionguide 9
- Groundingrequirements 10
- Chapter1.Safetyinformation5 11
- 6HardwareMaintenanceManual 12
- .Safetyinformation7 13
- Chapter1.Safetyinformation9 15
- Chapter1.Safetyinformation11 17
- 12HardwareMaintenanceManual 18
- .Safetyinformation13 19
- 14HardwareMaintenanceManual 20
- .Safetyinformation15 21
- 16HardwareMaintenanceManual 22
- Chapter1.Safetyinformation17 23
- 18HardwareMaintenanceManual 24
- .Safetyinformation19 25
- 20HardwareMaintenanceManual 26
- .Safetyinformation21 27
- 22HardwareMaintenanceManual 28
- StrategyforreplacingFRUs 29
- Howtouseerrormessage 30
- Productdenition 30
- 26HardwareMaintenanceManual 32
- Chapter3.Generalcheckout 33
- Checkoutguide 34
- Chapter3.Generalcheckout29 35
- Chapter3.Generalcheckout31 37
- PC-DoctorforRescueandRecovery 38
- FRUtests 38
- LenovoSolutionCenter 39
- Quicktestprograms 39
- UEFIdiagnosticprogram 40
- Bootablediagnosticprograms 40
- Powersystemcheckout 41
- CheckingtheACadapter 41
- Checkingoperationalcharging 42
- Checkingthebatterypack 42
- Checkingthebackupbattery 43
- 38HardwareMaintenanceManual 44
- Passwords 47
- Power-onpassword 47
- Hard-diskpassword 47
- Supervisorpassword 47
- Powermanagement 48
- Screenblankmode 49
- Sleep(standby)mode 49
- Hibernationmode 49
- Symptom-to-FRUindex 50
- Numericerrorcodes 51
- 46HardwareMaintenanceManual 52
- .Relatedserviceinformation47 53
- 48HardwareMaintenanceManual 54
- Errormessages 55
- Beepsymptoms 56
- No-beepsymptoms 57
- LCD-relatedsymptoms 57
- Intermittentproblems 58
- Undeterminedproblems 58
- .Relatedserviceinformation53 59
- 54HardwareMaintenanceManual 60
- Chapter5.Statusindicators 61
- 56HardwareMaintenanceManual 62
- .Statusindicators57 63
- 58HardwareMaintenanceManual 64
- Chapter6.Fnkeycombinations 65
- 60HardwareMaintenanceManual 66
- Screwnotices 67
- Retainingserialnumbers 68
- RetainingtheUUID 69
- 64HardwareMaintenanceManual 70
- 1010Batterypack 72
- 1040DIMM 75
- 1,butdonotremovethem 77
- 1070Keyboard 80
- .RemovingandreplacingaFRU75 81
- Installationstepsofkeyboard 82
- 1.Attachthekeyboardconnector 82
- 76HardwareMaintenanceManual 82
- .RemovingandreplacingaFRU77 83
- 1080Backupbattery 84
- 1150LCDunit 91
- 2010LCDbezelassembly 100
- 2020LCDlatchLandR 101
- 2040LEDsubcard 103
- 2050LCDpanel 104
- 2060LCDcable 106
- 2070Hingekit 106
- 2080LEDcable 107
- StepScrew(quantity)Color 109
- Black0.181Nm 109
- (1.85kgfcm) 109
- 104HardwareMaintenanceManual 110
- Frontview 111
- Rearview 112
- Bottomview 112
- .Locations107 113
- 108HardwareMaintenanceManual 114
- Chapter10.Partslist 115
- 110HardwareMaintenanceManual 116
- .Partslist111 117
- 112HardwareMaintenanceManual 118
- .Partslist113 119
- 114HardwareMaintenanceManual 120
- .Partslist115 121
- 116HardwareMaintenanceManual 122
- .Partslist117 123
- 118HardwareMaintenanceManual 124
- .Partslist119 125
- 120HardwareMaintenanceManual 126
- .Partslist121 127
- 122HardwareMaintenanceManual 128
- .Partslist123 129
- 124HardwareMaintenanceManual 130
- .Partslist125 131
- 126HardwareMaintenanceManual 132
- .Partslist127 133
- 128HardwareMaintenanceManual 134
- .Partslist129 135
- 130HardwareMaintenanceManual 136
- .Partslist131 137
- 132HardwareMaintenanceManual 138
- .Partslist133 139
- 134HardwareMaintenanceManual 140
- .Partslist135 141
- 136HardwareMaintenanceManual 142
- .Partslist137 143
- Keyboard 144
- Miscellaneousparts 145
- 140HardwareMaintenanceManual 146
- .Partslist141 147
- ACadapters 148
- Powercords 148
- Recoverydiscs 149
- Chapter10.Partslist145 151
- Chapter10.Partslist147 153
- Chapter10.Partslist149 155
- Windows7HomeBasic(32bit)DVDs 157
- Chapter10.Partslist153 159
- Chapter10.Partslist155 161
- Commonservicetools 162
- AppendixA.Notices 163
- Trademarks 164
- *45M2271_07* 166
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