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Important:
Useonlyapprovedtoolsandtestequipment.Somehandtoolshavehandlescoveredwithasoftmaterial
thatdoesnotinsulateyouwhenworkingwithliveelectricalcurrents.
Manycustomershave,neartheirequipment,rubberfloormatsthatcontainsmallconductivefibersto
decreaseelectrostaticdischarges.Donotusethistypeofmattoprotectyourselffromelectricalshock.
•Findtheroomemergencypower-off(EPO)switch,disconnectingswitch,orelectricaloutlet.Ifanelectrical
accidentoccurs,youcanthenoperatetheswitchorunplugthepowercordquickly.
•Donotworkaloneunderhazardousconditionsornearequipmentthathashazardousvoltages.
•Disconnectallpowerbefore:
–Performingamechanicalinspection
–Workingnearpowersupplies
–Removingorinstallingmainunits
•Beforeyoustarttoworkonthemachine,unplugthepowercord.Ifyoucannotunplugit,askthecustomer
topower-offthewallboxthatsuppliespowertothemachine,andtolockthewallboxintheoffposition.
•Ifyouneedtoworkonamachinethathasexposedelectricalcircuits,observethefollowingprecautions:
–Ensurethatanotherperson,familiarwiththepower-offcontrols,isnearyou.
Attention:Anotherpersonmustbetheretoswitchoffthepower,ifnecessary.
–Useonlyonehandwhenworkingwithpowered-onelectricalequipment;keeptheotherhandinyour
pocketorbehindyourback.
Attention:Anelectricalshockcanoccuronlywhenthereisacompletecircuit.Byobservingtheabove
rule,youmaypreventacurrentfrompassingthroughyourbody.
–Whenusingtesters,setthecontrolscorrectlyandusetheapprovedprobeleadsandaccessoriesfor
thattester.
–Standonsuitablerubbermats(obtainedlocally,ifnecessary)toinsulateyoufromgroundssuchas
metalfloorstripsandmachineframes.
Observethespecialsafetyprecautionswhenyouworkwithveryhighvoltages;Instructionsforthese
precautionsareinthesafetysectionsofmaintenanceinformation.Useextremecarewhenmeasuring
highvoltages.
•Regularlyinspectandmaintainyourelectricalhandtoolsforsafeoperationalcondition.
•Donotusewornorbrokentoolsandtesters.
•Neverassumethatpowerhasbeendisconnectedfromacircuit.First,checkthatithasbeenpoweredoff.
•Alwayslookcarefullyforpossiblehazardsinyourworkarea.Examplesofthesehazardsaremoistfloors,
nongroundedpowerextensioncables,powersurges,andmissingsafetygrounds.
•Donottouchliveelectricalcircuitswiththereflectivesurfaceofaplasticdentalmirror.Thesurfaceis
conductive;suchtouchingcancausepersonalinjuryandmachinedamage.
•Donotservicethefollowingpartswiththepoweronwhentheyareremovedfromtheirnormaloperating
placesinamachine:
–Powersupplyunits
–Pumps
–Blowersandfans
–Motorgenerators
–Similarunitstolistedabove
Thispracticeensurescorrectgroundingoftheunits.
•Ifanelectricalaccidentoccurs:
–Usecaution;donotbecomeavictimyourself.
–Switchoffpower.
–Sendanotherpersontogetmedicalaid.
2HardwareMaintenanceManual
- HardwareMaintenanceManual 1
- FirstEdition(May2014) 2
- ©CopyrightLenovo2014 2
- No.GS-35F-05925 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
- 36HardwareMaintenanceManual 42
- LCDFRUsandCRUs 43
- 38HardwareMaintenanceManual 44
- .Locations39 45
- 40HardwareMaintenanceManual 46
- .Locations41 47
- 42HardwareMaintenanceManual 48
- .Locations43 49
- 44HardwareMaintenanceManual 50
- Screwnotices 52
- Generalguidelines 53
- 1010Batterypack 54
- 1020Bottomslotcover 54
- 1030Memorymodules 55
- 1,andthencarefullyremovethe 56
- 1040Harddiskdriveassembly 57
- StepScrew(quantity)Color 58
- Black0.392Nm 58
- (4.0kgf-cm) 58
- 1060mSATAsolid-statedrive 59
- 1070Backupbattery 60
- 1080Keyboard 61
- Pushhardtounlatchthekeyboard 62
- 56HardwareMaintenanceManual 62
- 1090Keyboardbezel 63
- Removethescrews1and2 64
- 58HardwareMaintenanceManual 64
- .RemovingorreplacingaFRU59 65
- Black0.181Nm 66
- (1.85kgf-cm) 66
- 1120Powerboard 67
- 1130Mediacardreaderslotboard 67
- 1140Systemboardassembly 69
- 1150Thermalmoduleassembly 72
- 1.Loosenthescrews2to7 73
- Removalstepsofthespeakers 75
- .RemovingorreplacingaFRU69 75
- 4,returntheoldpart 77
- 1170DC-inconnector 78
- 2010LCDfrontbezel 79
- 2020Cameraandmicrophoneboard 79
- 78HardwareMaintenanceManual 84
- AppendixA.Notices 85
- Trademarks 86
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