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•Thebatteriesareproperlyinstalled.
•Thebatteriesstillretaintheircurrent.
•ThewirelessKeyboardislocatedlessthantenmetersawayfromthetransceiver.
•Thetransceiverisfullyinstalled.
Action:IftheTransceiverCommunicationsLEDisnoton,reconnectthetransceiverandthekeyboard.
Monitorproblems
Note:Manymonitorshavestatus-indicatorlightsandbuilt-incontrolsforadjustingbrightness,contrast,
width,height,andotherpictureadjustments.However,thecontrolsvaryfrommonitortypetomonitortype.
Forinformationaboutthestatuslightsandusingthecontrols,refertothedocumentationthatcomes
withyourmonitor.
Selectyoursymptomfromthefollowinglist:
•“Wrongcharactersappearonthescreen”onpage71
•“Themonitorworkswhenyouturnonthecomputer,butgoesblankaftersomeperiodofcomputer
inactivity”onpage71
•“Themonitorworkswhenyouturnonthecomputer,butgoesblankwhenyoustartsomeapplication
programs”onpage71
•“Theimageappearstobeflickering”onpage72
•“Theimageisdiscolored”onpage72
Wrongcharactersappearonthescreen
Symptom:Wrongcharactersappearonthescreen.
Action:Havethecomputerserviced.Fordetails,seeChapter11“Gettinginformation,help,andservice”
onpage81.
Themonitorworkswhenyouturnonthecomputer,butgoesblankaftersomeperiod
ofcomputerinactivity
Symptom:Themonitorworkswhenyouturnonthecomputer,butgoesblankaftersomeperiodofcomputer
inactivity.
Action:Thecomputerisprobablysetforenergysavingswiththepower-managementfeature.Ifthe
power-managementfeatureisenabled,disablingitorchangingthesettingsmightsolvetheproblem.
Iftheseactionsdonotcorrecttheproblem,runtheLenovoSolutionCenterprogram.Ifyouneedtechnical
assistance,seeChapter11“Gettinginformation,help,andservice”onpage81.
Themonitorworkswhenyouturnonthecomputer,butgoesblankwhenyoustart
someapplicationprograms
Symptom:Themonitorworkswhenyouturnonthecomputer,butgoesblankwhenyoustartsome
applicationprograms.
Actions:
•Makesurethemonitorsignalcableissecurelyconnectedtothemonitorandthemonitorconnectoron
thecomputer.Aloosecablecancauseintermittentproblems.
•Verifythatthenecessarydevicedriversfortheapplicationprogramsareinstalled.Refertothe
documentationfortheaffectedapplicationprogramtoseeifdevicedriversarerequired.
Chapter10.Troubleshootinganddiagnostics71
- ThinkCentreM73z 1
- UserGuide 1
- ThirdEdition(June2014) 2
- Contents 3
- Importantsafetyinformation 7
- Powercordsandpoweradapters 8
- Plugsandoutlets 9
- Externaldevices 9
- Heatandproductventilation 9
- Operatingenvironment 10
- Modemsafetyinformation 10
- Lasercompliancestatement 11
- Powersupplystatement 11
- Cleaningandmaintenance 11
- Chapter1.Productoverview 13
- Chapter1.Productoverview3 15
- Specifications 16
- Lenovoprograms 16
- Chapter1.Productoverview5 17
- Chapter1.Productoverview7 19
- Locations 20
- .Productoverview9 21
- 10ThinkCentreM73zUserGuide 22
- .Productoverview11 23
- Adjustingtheframestand 24
- Chapter1.Productoverview13 25
- Chapter1.Productoverview15 27
- Machinetypeandmodellabel 28
- Chapter2.Usingyourcomputer 29
- NavigatingonWindows8 30
- NavigatingonWindows8.1 31
- Usingthekeyboard 33
- UsingWindowsshortcutkeys 33
- Usingafingerprintreader 33
- Usingthewheelmouse 34
- Adjustingaudio 34
- Aboutyourcomputeraudio 34
- UsingCDsandDVDs 35
- PlayingaCDorDVD 36
- RecordingaCDorDVD 36
- Chapter2.Usingyourcomputer25 37
- 26ThinkCentreM73zUserGuide 38
- Chapter3.Youandyourcomputer 39
- Glareandlighting 40
- Aircirculation 40
- Accessibilityinformation 40
- Chapter3.Youandyourcomputer29 41
- Chapter3.Youandyourcomputer31 43
- Registeringyourcomputer 44
- Chapter4.Security 45
- Usingpasswords 46
- BIOSpasswords 46
- Windowspasswords 47
- Configuringthefingerprintreader 47
- Usingandunderstandingfirewalls 47
- Protectingdataagainstviruses 47
- 36ThinkCentreM73zUserGuide 48
- Installingorreplacinghardware 49
- Installingexternaloptions 49
- Replacingthewirelesskeyboard 50
- Replacingthewirelessmouse 51
- 40ThinkCentreM73zUserGuide 52
- Obtainingdevicedrivers 53
- 42ThinkCentreM73zUserGuide 54
- Chapter6.Recoveryinformation 55
- Creatingrecoverymedia 56
- Usingrecoverymedia 56
- Performingabackupoperation 56
- Performingarecoveryoperation 57
- Creatingandusingarescuemedium 58
- Reinstallingsoftwareprograms 60
- Reinstallingdevicedrivers 60
- Solvingrecoveryproblems 60
- Refreshingyourcomputer 61
- Viewingandchangingsettings 63
- Passwordconsiderations 64
- Power-OnPassword 64
- AdministratorPassword 64
- HardDiskPassword 64
- Enablingordisablingadevice 65
- Selectingastartupdevice 65
- EnablingErPLPScompliancemode 66
- Smartperformancechoices 67
- ExitingtheSetupUtilityprogram 67
- 56ThinkCentreM73zUserGuide 68
- Usingsystemprograms 69
- Chapter9.Preventingproblems 71
- UsingSystemUpdate 72
- Cleaningyourcomputer 73
- Goodmaintenancepractices 74
- Movingyourcomputer 74
- Basictroubleshooting 75
- Troubleshootingprocedure 76
- Troubleshooting 76
- Audioproblems 77
- CDproblems 78
- DVDproblems 79
- DVDmoviewillnotplay 80
- Playbackisverysloworchoppy 80
- Intermittentproblems 81
- Monitorproblems 83
- Theimageappearstobeflickering 84
- Theimageisdiscolored 84
- Networkingproblems 85
- AwirelessLANproblem 86
- Optionproblems 87
- Performanceandlockupproblems 88
- Printerproblems 90
- Serialportproblems 90
- Softwareproblems 90
- Softwaredoesnotworkasexpected 91
- USBproblems 92
- LenovoSolutionCenter 92
- Informationresources 93
- LenovoThinkVantageTools 93
- HelpandSupport 93
- SafetyandWarranty 93
- LenovoWebsite 93
- LenovoSupportWebsite 94
- Helpandservice 94
- Callingforservice 94
- Usingotherservices 95
- Purchasingadditionalservices 95
- 84ThinkCentreM73zUserGuide 96
- AppendixA.Notices 97
- Trademarks 98
- Exportclassificationnotice 99
- Electronicemissionsnotices 99
- ThinkCentreM73zUserGuide 100
- Eurasiancompliancemark 101
- Brazilregulatorynotice 101
- Mexicoregulatorynotice 101
- 90ThinkCentreM73zUserGuide 102
- ImportantWEEEinformation 103
- RecyclinginformationforJapan 103
- RecyclinginformationforBrazil 104
- 94ThinkCentreM73zUserGuide 106
- EuropeanUnionRoHS 107
- ChinaRoHS 107
- TurkishRoHS 107
- UkraineRoHS 108
- IndiaRoHS 108
- AppendixE.ChinaEnergyLabel 109
- 98ThinkCentreM73zUserGuide 110
- ©CopyrightLenovo2013,2014 111
- 100ThinkCentreM73zUserGuide 112
- 102ThinkCentreM73zUserGuide 114
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