Lenovo M490s notebook User Manual Page 7
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Chapter1.Safetyinformation
Thischapterpresentsfollowingsafetyinformationthatyouneedtobefamiliarwithbeforeyouservicea
Lenovonotebookcomputer.
•“Generalsafety”onpage1
•“Electricalsafety”onpage1
•“Safetyinspectionguide”onpage3
•“Handlingdevicesthataresensitivetoelectrostaticdischarge”onpage3
•“Groundingrequirements”onpage4
•“Safetynotices(multilingualtranslations)”onpage4
Generalsafety
Followtheserulestoensuregeneralsafety:
•Observegoodhousekeepingintheareaofthemachinesduringandaftermaintenance.
•Whenliftinganyheavyobject:
1.Makesurethatyoucanstandsafelywithoutslipping.
2.Distributetheweightoftheobjectequallybetweenyourfeet.
3.Useaslowliftingforce.Nevermovesuddenlyortwistwhenyouattempttolift.
4.Liftbystandingorbypushingupwithyourlegmuscles;thisactionremovesthestrainfromthe
musclesinyourback.Donotattempttoliftanyobjectthatweighsmorethan16kg(35lb)orthatyou
thinkistooheavyforyou.
•Donotperformanyactionthatcauseshazardstothecustomer,orthatmakestheequipmentunsafe.
•Beforeyoustartthemachine,makesurethatotherservicetechniciansandthecustomer'spersonnelare
notinahazardousposition.
•Placeremovedcoversandotherpartsinasafeplace,awayfromallpersonnel,whileyouareservicing
themachine.
•Keepyourtoolcaseawayfromwalkareassothatotherpeoplewillnottripoverit.
•Donotwearlooseclothingthatcanbetrappedinthemovingpartsofamachine.Makesurethatyour
sleevesarefastenedorrolledupaboveyourelbows.Ifyourhairislong,fastenit.
•Inserttheendsofyournecktieorscarfinsideclothingorfastenitwithanonconductiveclip,about8
centimeters(3inches)fromtheend.
•Donotwearjewelry,chains,metal-frameeyeglasses,ormetalfastenersforyourclothing,becausemetal
objectsaregoodelectricalconductors.
•Wearsafetyglasseswhenyouarehammering,drilling,soldering,cuttingwire,attachingsprings,using
solvents,orworkinginanyotherconditionsthatmightbehazardoustoyoureyes.
•Afterservice,reinstallallsafetyshields,guards,labels,andgroundwires.Replaceanysafetydevice
thatiswornordefective.
•Reinstallallcoverscorrectlybeforereturningthemachinetothecustomer.
•Fanlouversonthemachinehelptopreventoverheatingofinternalcomponents.Donotobstructfan
louversorcoverthemwithlabelsorstickers.
Electricalsafety
Observethefollowingruleswhenworkingonelectricalequipment.
©CopyrightLenovo2013
1
- HardwareMaintenanceManual 1
- FirstEdition(January2013) 2
- ©CopyrightLenovo2013 2
- Contents 3
- Aboutthismanual 5
- Chapter1.Safetyinformation 7
- Safetyinspectionguide 9
- Groundingrequirements 10
- Chapter1.Safetyinformation5 11
- 6HardwareMaintenanceManual 12
- .Safetyinformation7 13
- Chapter1.Safetyinformation9 15
- VORSICHT 17
- .Safetyinformation11 17
- 12HardwareMaintenanceManual 18
- .Safetyinformation13 19
- 14HardwareMaintenanceManual 20
- .Safetyinformation15 21
- 16HardwareMaintenanceManual 22
- .Safetyinformation17 23
- 18HardwareMaintenanceManual 24
- .Safetyinformation19 25
- 20HardwareMaintenanceManual 26
- Chapter2.Generalcheckout 27
- Powersystemcheckout 28
- Checkingtheacpoweradapter 28
- Checkingoperationalcharging 29
- Checkingthebatterypack 29
- Recoveringthecomputersettings 31
- Usingpasswords 31
- Powermanagement 32
- Screenblankmode 32
- Sleepmode 32
- Hibernationmode 33
- 28HardwareMaintenanceManual 34
- Chapter4.Statusindicators 35
- 30HardwareMaintenanceManual 36
- Chapter5.Fnkeycombinations 37
- 32HardwareMaintenanceManual 38
- Chapter6.Locations 39
- Bottomview 40
- LocatingFRUsandCRUs 40
- MajorFRUsandCRUs 41
- LCDFRUsandCRUs 42
- LookingupFRUinformation 43
- 38HardwareMaintenanceManual 44
- Screwnotices 46
- Generalguidelines 47
- 1010Batterypack 48
- 1020Bottomslotcover 48
- 1030Memorymodules 49
- 1,andthencarefullyremovethe 50
- 1040Harddiskdriveassembly 51
- StepScrew(quantity)Color 52
- Black0.392Nm 52
- (4.0kgf-cm) 52
- 1060mSATAsolid-statedrive 53
- 1070Backupbattery 54
- 1080Basecover 55
- 8,returntheoldpart 56
- 1090Mediacardreaderslotboard 57
- Detachthengerprintconnector 59
- .RemovingorreplacingaFRU53 59
- 1120Thermalmoduleassembly 60
- 1130DC-inconnector 62
- 1140Powerboard 63
- 1150Systemboardassembly 65
- Black0.181Nm 69
- (1.85kgf-cm) 69
- 2010LCDfrontbezel 70
- 2020Cameraandmicrophoneboard 71
- 70HardwareMaintenanceManual 76
- AppendixA.Notices 77
- Electronicemissionsnotices 78
- Trademarks 78
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