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Chapter2.Safetyinformation
Thischaptercontainsthesafetyinformationthatyouneedtobefamiliarwithbeforeservicingacomputer.
Generalsafety
Followtheserulestoensuregeneralsafety:
•Observegoodhousekeepingintheareaofthemachinesduringandaftermaintenance.
•Whenliftinganyheavyobject:
1.Ensureyoucanstandsafelywithoutslipping.
2.Distributetheweightoftheobjectequallybetweenyourfeet.
3.Useaslowliftingforce.Nevermovesuddenlyortwistwhenyouattempttolift.
4.Liftbystandingorbypushingupwithyourlegmuscles;thisactionremovesthestrainfromthe
musclesinyourback.Donotattempttoliftanyobjectsthatweighmorethan16kg(35lb)orobjects
thatyouthinkaretooheavyforyou.
•Donotperformanyactionthatcauseshazardstothecustomer,orthatmakestheequipmentunsafe.
•Beforeyoustartthemachine,ensurethatotherservicerepresentativesandthecustomer'spersonnelare
notinahazardousposition.
•Placeremovedcoversandotherpartsinasafeplace,awayfromallpersonnel,whileyouareservicing
themachine.
•Keepyourtoolcaseawayfromwalkareassothatotherpeoplewillnottripoverit.
•Donotwearlooseclothingthatcanbetrappedinthemovingpartsofamachine.Ensurethatyoursleeves
arefastenedorrolledupaboveyourelbows.Ifyourhairislong,fastenit.
•Inserttheendsofyournecktieorscarfinsideclothingorfastenitwithanonconductiveclip,approximately
8centimeters(3inches)fromtheend.
•Donotwearjewelry,chains,metal-frameeyeglasses,ormetalfastenersforyourclothing.
Remember:Metalobjectsaregoodelectricalconductors.
•Wearsafetyglasseswhenyouare:hammering,drilling,soldering,cuttingwire,attachingsprings,using
solvents,orworkinginanyotherconditionsthatmightbehazardoustoyoureyes.
•Afterservice,reinstallallsafetyshields,guards,labels,andgroundwires.Replaceanysafetydevice
thatiswornordefective.
•Reinstallallcoverscorrectlybeforereturningthemachinetothecustomer.
Electricalsafety
CAUTION:
Electricalcurrentfrompower,telephone,andcommunicationcablescanbehazardous.Toavoid
personalinjuryorequipmentdamage,disconnecttheattachedpowercords,telecommunication
systems,networks,andmodemsbeforeyouopenthecentrecovers,unlessinstructedotherwisein
theinstallationandconfigurationprocedures.
Observethefollowingruleswhenworkingonelectricalequipment.
©CopyrightLenovo2013,2014
3
- ThinkCentreE73 1
- HardwareMaintenanceManual 1
- FourthEdition(December2014) 2
- Contents 3
- Chapter1.Aboutthismanual 5
- Chapter2.Safetyinformation 7
- Voltage-selectionswitch 9
- Safetyinspectionguide 9
- Groundingrequirements 10
- Chapter2.Safetyinformation7 11
- .Safetyinformation9 13
- Chapter2.Safetyinformation11 15
- .Safetyinformation13 17
- .Safetyinformation15 19
- Chapter2.Safetyinformation17 21
- ≥18kg≥32kg≥55kg 23
- .Safetyinformation21 25
- Chapter2.Safetyinformation25 29
- Chapter3.Generalinformation 33
- Lenovoprograms 34
- Chapter3.Generalinformation31 35
- LenovoSupportWebsite 36
- Chapter4.Generalcheckout 37
- Basictroubleshooting 39
- Troubleshootingprocedure 40
- Troubleshooting 41
- Audioproblems 41
- NoaudioinWindows 42
- CDproblems 43
- DVDproblems 44
- Intermittentproblems 45
- Harddiskdriveproblems 45
- Monitorproblems 48
- Networkingproblems 49
- AwirelessLANproblem 51
- Bluetoothproblem 51
- Optionproblems 52
- Performanceandlockupproblems 52
- Printerproblems 54
- Serialportproblems 55
- Softwareproblems 55
- USBproblems 56
- Diagnostics 57
- LenovoSolutionCenter 57
- UEFIdiagnosticprogram 57
- Viewingandchangingsettings 59
- Usingpasswords 59
- Passwordconsiderations 60
- Power-OnPassword 60
- AdministratorPassword 60
- HardDiskPassword 60
- Enablingordisablingadevice 61
- Selectingastartupdevice 62
- EnablingErPLPScompliancemode 62
- ExitingtheSetupUtilityprogram 63
- Chapter7.Symptom-to-FRUindex 65
- POSTerrorcodes 66
- .Symptom-to-FRUindex63 67
- Miscellaneouserrormessages 68
- Undeterminedproblems 69
- Chapter8.Locations 71
- LocatingmajorFRUsandCRUs 73
- Figure3.Componentlocations 74
- LookingupFRUinformation 75
- Locatingpartsonthesystemboard 76
- Locatinginternaldrives 77
- .Locations75 79
- .Locations77 81
- Installingexternaloptions 85
- Installingorreplacinghardware 85
- Replacingtherearfanassembly 93
- Installingthesolid-statedrive 98
- Replacingtheslimcardreader 101
- Replacingthethermalsensor 107
- Replacingthemicroprocessor 109
- 2onthemicroprocessor 111
- Replacingthesystemboard 112
- ReplacingtheWi-Fiunits 115
- RemovingtheWi-Ficardmodule 117
- InstallingtheWi-Fiunits 118
- InstallingtherearWi-Fiantenna 121
- RemovingtherearWi-Fiantenna 121
- Replacingthekeyboardormouse 124
- Completingthepartsreplacement 125
- Obtainingdevicedrivers 126
- 10BF,and10BG) 127
- Removingthecomputercover 128
- 1inwardandpivotthedrivebay 131
- 1asshownto 132
- Replacingthebattery 134
- Replacingtheharddiskdrive 135
- Replacingtheopticaldrive 137
- Replacingthesolid-statedrive 143
- Replacingthesystemfanassembly 162
- RemovingtheWi-Fiadaptercard 166
- InstallingthefrontWiFiantenna 172
- RemovingthefrontWi-Fiantenna 173
- ©CopyrightLenovo2013,2014 177
- Powermanagement 180
- AutomaticPower-onfeatures 180
- AppendixA.Notices 181
- Televisionoutputnotice 182
- EuropeanconformanceCEmark 182
- Trademarks 182
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