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•Themonitormightbeoperatinginalow-refreshratedisplaymode.Setthemonitortothehighest,
noninterlacedrefreshratesupportedbyyourmonitorandthevideocontrollerinyourcomputer.
Attention:Usingaresolutionorrefreshratethatisnotsupportedbyyourmonitormightdamageit.Check
thedocumentationthatcomeswithyourmonitortoverifythesupportedrefreshrates.
•Themonitormightbeaffectedbyinterferencefromnearbyequipment.Magneticeldsaroundother
devices,suchastransformers,appliances,uorescentlights,andothermonitorsmightbecausingthe
problem.Moveuorescentdesklightingoranyequipmentthatproducesmagneticeldsfartheraway
fromthemonitor.Ifthisdoesnotcorrecttheproblem,dothefollowing:
1.Turnoffthemonitor.(Movingacolormonitorwhileitisturnedonmightcausescreendiscoloration.)
2.Adjusttheplacementofthemonitorandotherdevicessothattheyareatleast305mm(12inches)
apart.
3.Turnonthemonitor.
•YoucanresettherefreshratethroughyouroperatingsystemControlPanel.
OntheWindows7operatingsystem,clickStart➙ControlPanel➙HardwareandSound➙Adjust
screenresolution➙AdvancedSettings.ThenclicktheMonitortabandselectanewrefreshrate.
•Seeyouroperatingsystemdocumentationorhelpforfurtherinformationonmonitorsettings.
Iftheseactionsdonotcorrecttheproblem,yourmonitormightneedservice.SeeChapter11“Getting
information,help,andservice”onpage103fordetails.
Theimageisdiscolored
Symptom:Theimageisdiscolored.
Action:Themonitormightbeaffectedbyinterferencefromnearbyequipment.Magneticeldsaroundother
devices,suchastransformers,appliances,uorescentlights,andothermonitorsmightbecausingthe
problem.Moveuorescentdesklightingoranyequipmentthatproducesmagneticeldsfurtherawayfrom
themonitor.Ifthisdoesnotcorrecttheproblem,dothefollowing:
1.Turnoffthemonitor.(Movingacolormonitorwhileitisturnedonmightcausescreendiscoloration.)
2.Adjusttheplacementofthemonitorandotherdevicessothattheyareatleast305mm(12inches)apart.
3.Turnonthemonitor.
Iftheseactionsdonotcorrecttheproblem,yourmonitormightneedservice.SeeChapter11“Getting
information,help,andservice”onpage103fordetails.
Networkingproblems
Thefollowingarethemostcommonnetworkingproblems.Selectyournetworkingproblemfromthe
followinglist:
•“Ethernetproblems”onpage92
•“AwirelessLANproblem”onpage94
•“AwirelessWANproblem”onpage94
•“Bluetoothproblems”onpage94
Formoreinformation,see“HelpandSupport”onpage103.
Ethernetproblems
ForEthernetproblems,selectyoursymptomfromthefollowinglist:
•“Yourcomputercannotconnecttothenetwork”onpage93
92ThinkCentreUserGuide
- ThinkCentre 1
- UserGuide 1
- ThirdEdition(June2012) 2
- Contents 3
- AppendixC.WEEEandrecycling 5
- Index.................119 5
- Importantsafetyinformation 7
- Powercordsandpoweradapters 8
- Plugsandoutlets 9
- Externaldevices 9
- Heatandproductventilation 9
- Operatingenvironment 10
- Modemsafetyinformation 10
- Lasercompliancestatement 11
- Powersupplystatement 11
- Cleaningandmaintenance 11
- ThinkCentreUserGuide 12
- Chapter1.Productoverview 13
- Chapter1.Productoverview3 15
- Specications 16
- Softwareoverview 16
- SoftwareprovidedbyLenovo 16
- LenovoThinkVantageTools 17
- LenovoWelcome 17
- FingerprintSoftware 17
- SimpleTap 17
- LenovoThinkVantageT oolbox 18
- ProductRecovery 18
- ThinkVantagePasswordManager 18
- ThinkVantagePowerManager 18
- ThinkVantageRescueandRecovery 18
- AdobeReader 19
- Antivirussoftware 19
- Locations 19
- 8ThinkCentreUserGuide 20
- .Productoverview9 21
- 10ThinkCentreUserGuide 22
- Locatingcomponents 23
- Locatingpartsonthesystemboard 24
- Locatinginternaldrives 25
- Machinetypeandmodellabel 26
- Chapter2.Usingyourcomputer 27
- Usingangerprintreader 28
- Usingthewheelmouse 28
- Adjustingaudio 28
- Aboutyourcomputeraudio 28
- UsingCDsandDVDs 29
- PlayingaCDorDVD 30
- RecordingaCDorDVD 30
- Chapter3.Youandyourcomputer 31
- Glareandlighting 32
- Aircirculation 32
- Voltage-selectionswitch 33
- Replacementpowercords 33
- 22ThinkCentreUserGuide 34
- Chapter4.Security 35
- Lockingthecomputercover 36
- Usingpasswords 37
- BIOSpasswords 37
- Windowspasswords 38
- Conguringthengerprintreader 38
- Usingandunderstandingrewalls 38
- Protectingdataagainstviruses 38
- .Security27 39
- 28ThinkCentreUserGuide 40
- Installingorreplacinghardware 41
- Installingexternaloptions 41
- Removingthecomputercover 42
- InstallingorreplacingaPCIcard 43
- 1toopenthecardlatch2 44
- Figure12.RemovingaPCIcard 45
- Figure13.InstallingaPCIcard 46
- Attention: 46
- Installingthecardreader 51
- Replacingthecardreader 53
- Replacingthebattery 54
- Replacingthemicroprocessor 59
- 1,pin2,pin3 64
- Replacingthefrontfanassembly 65
- 54ThinkCentreUserGuide 66
- Replacingtherearfan 67
- Figure43.Removingtherearfan 68
- Figure44.Installingtherearfan 69
- Replacingtheinternalspeaker 70
- Replacingthekeyboardormouse 72
- Completingthepartsreplacement 73
- Obtainingdevicedrivers 74
- Chapter6.Recoveryinformation 75
- Usingrecoverymedia 76
- Performingabackupoperation 76
- Performingarecoveryoperation 77
- Creatingandusingarescuemedium 78
- Creatingarescuemedium 78
- Usingarescuemedium 78
- Reinstallingsoftwareprograms 80
- Reinstallingdevicedrivers 80
- Solvingrecoveryproblems 80
- .Recoveryinformation69 81
- 70ThinkCentreUserGuide 82
- Viewingandchangingsettings 83
- Passwordconsiderations 84
- Power-OnPassword 84
- AdministratorPassword 84
- HardDiskPassword 84
- Enablingordisablingadevice 85
- Selectingastartupdevice 86
- EnablingErPcompliancemode 86
- ExitingtheSetupUtilityprogram 87
- 76ThinkCentreUserGuide 88
- Usingsystemprograms 89
- Chapter9.Preventingproblems 91
- UsingSystemUpdate 92
- Cleaningyourcomputer 93
- Goodmaintenancepractices 94
- Movingyourcomputer 94
- Basictroubleshooting 95
- Troubleshootingprocedure 96
- Troubleshooting 96
- Audioproblems 97
- CDproblems 98
- DVDproblems 99
- DVDmoviewillnotplay 100
- Playbackisverysloworchoppy 100
- Intermittentproblems 101
- Monitorproblems 102
- Networkingproblems 104
- AwirelessLANproblem 106
- AwirelessWANproblem 106
- Bluetoothproblems 106
- Optionproblems 107
- Performanceandlockupproblems 108
- Printerproblems 109
- Serialportproblems 110
- Softwareproblems 110
- USBproblems 111
- Diagnosticprograms 111
- LenovoSolutionCenter 112
- LenovoThinkVantageToolbox 112
- PC-DoctorforDOS 113
- 102ThinkCentreUserGuide 114
- ©CopyrightLenovo2011,2012 115
- LenovoSupportWebsite 116
- Helpandservice 116
- Callingforservice 116
- Usingotherservices 117
- Purchasingadditionalservices 117
- 106ThinkCentreUserGuide 118
- AppendixA.Notices 119
- Trademarks 120
- Exportclassicationnotice 121
- Televisionoutputnotice 121
- Electronicemissionsnotices 121
- 112ThinkCentreUserGuide 124
- ImportantWEEEInformation 125
- Recyclinginformation 125
- RecyclinginformationforBrazil 126
- 116ThinkCentreUserGuide 128
- ChinaRoHS 129
- TurkishRoHS 129
- UkraineRoHS 129
- IndiaRoHS 130
- 120ThinkCentreUserGuide 132
- 122ThinkCentreUserGuide 134
- *1P0B07068* 136
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