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Electricalsafety
Observethefollowingruleswhenworkingonelectricalequipment.
Important:Useonlyapprovedtoolsandtestequipment.Somehandtoolshavehandlescoveredwithasoft
materialthatdoesnotinsulateyouwhenworkingwithliveelectricalcurrents.Manycustomershave,near
theirequipment,rubberoormatsthatcontainsmallconductiveberstodecreaseelectrostaticdischarges.
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
metaloorstripsandmachineframes.
Observethespecialsafetyprecautionswhenyouworkwithveryhighvoltages;Instructionsforthese
precautionsareinthesafetysectionsofmaintenanceinformation.Useextremecarewhenmeasuring
highvoltages.
•Regularlyinspectandmaintainyourelectricalhandtoolsforsafeoperationalcondition.
•Donotusewornorbrokentoolsandtesters.
•Neverassumethatpowerhasbeendisconnectedfromacircuit.First,checkthatithasbeenpoweredoff.
•Alwayslookcarefullyforpossiblehazardsinyourworkarea.Examplesofthesehazardsaremoistoors,
nongroundedpowerextensioncables,powersurges,andmissingsafetygrounds.
•Donottouchliveelectricalcircuitswiththereectivesurfaceofaplasticdentalmirror.Thesurfaceis
conductive;suchtouchingcancausepersonalinjuryandmachinedamage.
•Donotservicethefollowingpartswiththepoweronwhentheyareremovedfromtheirnormaloperating
placesinamachine:
–Powersupplyunits
–Pumps
–Blowersandfans
–Motorgenerators
–Similarunitstolistedabove
Thispracticeensurescorrectgroundingoftheunits.
•Ifanelectricalaccidentoccurs:
–Usecaution;donotbecomeavictimyourself.
–Switchoffpower.
2HardwareMaintenanceManual
- HardwareMaintenanceManual 1
- Contents 3
- Chapter9.Locations........127 4
- Aboutthismanual 5
- Chapter1.Safetyinformation 7
- Electricalsafety 8
- Safetyinspectionguide 9
- Groundingrequirements 10
- Chapter1.Safetyinformation5 11
- 6HardwareMaintenanceManual 12
- .Safetyinformation7 13
- 8HardwareMaintenanceManual 14
- Chapter1.Safetyinformation9 15
- Chapter1.Safetyinformation11 17
- .Safetyinformation13 19
- 14HardwareMaintenanceManual 20
- .Safetyinformation15 21
- 16HardwareMaintenanceManual 22
- .Safetyinformation17 23
- 18HardwareMaintenanceManual 24
- .Safetyinformation19 25
- 20HardwareMaintenanceManual 26
- Chapter1.Safetyinformation21 27
- Chapter1.Safetyinformation23 29
- .Safetyinformation25 31
- 26HardwareMaintenanceManual 32
- Chapter1.Safetyinformation27 33
- .Safetyinformation29 35
- 30HardwareMaintenanceManual 36
- StrategyforreplacingFRUs 37
- Howtouseerrormessage 38
- Productdenition 38
- UsingtheHMM 40
- 34HardwareMaintenanceManual 40
- Chapter3.Generalcheckout 41
- Checkoutguide 42
- Testingthecomputer 43
- Chapter3.Generalcheckout39 45
- PC-DoctorforRescueandRecovery 46
- FRUtests 46
- Powersystemcheckout 47
- CheckingtheACadapter 47
- Checkingoperationalcharging 48
- Checkingthebatterypack 48
- Checkingthebackupbattery 49
- 44HardwareMaintenanceManual 50
- ©CopyrightLenovo 51
- Passwords 53
- Power-onpassword 53
- Hard-diskpassword 53
- Supervisorpassword 53
- Powermanagement 54
- Screenblankmode 55
- Sleep(standby)mode 55
- Hibernationmode 55
- Symptom-to-FRUindex 56
- Numericerrorcodes 57
- 52HardwareMaintenanceManual 58
- .Relatedserviceinformation53 59
- 54HardwareMaintenanceManual 60
- Errormessages 61
- Beepsymptoms 62
- No-beepsymptoms 63
- LCD-relatedsymptoms 63
- Intermittentproblems 64
- Undeterminedproblems 64
- 60HardwareMaintenanceManual 66
- Chapter5.Statusindicators 67
- 62HardwareMaintenanceManual 68
- .Statusindicators63 69
- 64HardwareMaintenanceManual 70
- Chapter6.Fnkeycombinations 71
- 66HardwareMaintenanceManual 72
- .Fnkeycombinations67 73
- 68HardwareMaintenanceManual 74
- Screwnotices 75
- Retainingserialnumbers 76
- RetainingtheUUID 77
- 72HardwareMaintenanceManual 78
- 1010Batterypack 81
- •“1010Batterypack”onpage75 82
- Attention: 82
- 76HardwareMaintenanceManual 82
- .RemovingandreplacingaFRU77 83
- 1040DIMM 84
- .RemovingandreplacingaFRU79 85
- 80HardwareMaintenanceManual 86
- .RemovingandreplacingaFRU81 87
- 82HardwareMaintenanceManual 88
- •1010Batterypack 89
- .RemovingandreplacingaFRU83 89
- 84HardwareMaintenanceManual 90
- 1070Keyboard 91
- 86HardwareMaintenanceManual 92
- .RemovingandreplacingaFRU87 93
- 88HardwareMaintenanceManual 94
- 1080Backupbattery 95
- 90HardwareMaintenanceManual 96
- .RemovingandreplacingaFRU91 97
- 92HardwareMaintenanceManual 98
- .RemovingandreplacingaFRU93 99
- .RemovingandreplacingaFRU95 101
- 96HardwareMaintenanceManual 102
- .RemovingandreplacingaFRU97 103
- •“1070Keyboard”onpage85 105
- .RemovingandreplacingaFRU99 105
- 1150LCDunit 106
- .RemovingandreplacingaFRU101 107
- 102HardwareMaintenanceManual 108
- .RemovingandreplacingaFRU105 111
- 106HardwareMaintenanceManual 112
- .RemovingandreplacingaFRU107 113
- 108HardwareMaintenanceManual 114
- .RemovingandreplacingaFRU109 115
- 2010LCDbezelassembly 118
- .RemovingandreplacingaFRU113 119
- 2020LCDlatchLandR 120
- .RemovingandreplacingaFRU115 121
- 2040LEDsubcard 122
- .RemovingandreplacingaFRU117 123
- 2050LCDpanel 124
- 2060LCDcable 126
- 2070Hingekit 127
- 122HardwareMaintenanceManual 128
- 2080LEDcable 129
- 126HardwareMaintenanceManual 132
- Chapter9.Locations 133
- Rearview 134
- Bottomview 135
- 130HardwareMaintenanceManual 136
- Chapter10.Partslist 137
- 132HardwareMaintenanceManual 138
- .Partslist133 139
- 134HardwareMaintenanceManual 140
- .Partslist135 141
- 136HardwareMaintenanceManual 142
- .Partslist137 143
- 138HardwareMaintenanceManual 144
- .Partslist139 145
- 140HardwareMaintenanceManual 146
- .Partslist141 147
- 142HardwareMaintenanceManual 148
- .Partslist143 149
- 144HardwareMaintenanceManual 150
- .Partslist145 151
- 146HardwareMaintenanceManual 152
- .Partslist147 153
- 148HardwareMaintenanceManual 154
- .Partslist149 155
- 150HardwareMaintenanceManual 156
- .Partslist151 157
- 152HardwareMaintenanceManual 158
- .Partslist153 159
- 154HardwareMaintenanceManual 160
- .Partslist155 161
- 156HardwareMaintenanceManual 162
- .Partslist157 163
- 158HardwareMaintenanceManual 164
- .Partslist159 165
- .Partslist161 167
- 162HardwareMaintenanceManual 168
- .Partslist163 169
- 164HardwareMaintenanceManual 170
- .Partslist165 171
- 166HardwareMaintenanceManual 172
- .Partslist167 173
- 168HardwareMaintenanceManual 174
- .Partslist169 175
- 170HardwareMaintenanceManual 176
- .Partslist171 177
- 172HardwareMaintenanceManual 178
- .Partslist173 179
- Keyboard 180
- Miscellaneousparts 181
- 176HardwareMaintenanceManual 182
- .Partslist177 183
- ACadapters 184
- Powercords 184
- Recoverydiscs 185
- Chapter10.Partslist181 187
- Chapter10.Partslist183 189
- Chapter10.Partslist185 191
- Windows7HomeBasic(32bit)DVDs 193
- Chapter10.Partslist189 195
- Chapter10.Partslist191 197
- Chapter10.Partslist193 199
- Commonservicetools 201
- 196HardwareMaintenanceManual 202
- Trademarks 204
- *45M2271_04* 206
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