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•Ifanelectricalaccidentoccurs:
–Usecaution;donotbecomeavictimyourself.
–Switchoffpower.
–Sendanotherpersontogetmedicalaid.
Safetyinspectionguide
Thepurposeofthisinspectionguideistoassistyouinidentifyingpotentiallyunsafeconditions.Aseach
machinewasdesignedandbuilt,requiredsafetyitemswereinstalledtoprotectusersandservicetechnicians
frominjury.Thisguideaddressesonlythoseitems.Y oushouldusegoodjudgmenttoidentifypotential
safetyhazardsduetoattachmentofnon-Lenovofeaturesoroptionsnotcoveredbythisinspectionguide.
Ifanyunsafeconditionsarepresent,youmustdeterminehowserioustheapparenthazardcouldbeand
whetheryoucancontinuewithoutrstcorrectingtheproblem.
Considertheseconditionsandthesafetyhazardstheypresent:
•Electricalhazards,especiallyprimarypower(primaryvoltageontheframecancauseseriousorfatal
electricalshock)
•Explosivehazards,suchasadamagedCRTfaceorabulgingcapacitor
•Mechanicalhazards,suchaslooseormissinghardware
Todeterminewhetherthereareanypotentiallyunsafeconditions,usethefollowingchecklistatthebeginning
ofeveryservicetask.Beginthecheckswiththepoweroff,andthepowercorddisconnected.
Checklist:
1.Checkexteriorcoversfordamage(loose,broken,orsharpedges).
2.Turnoffthecomputer.Disconnectthepowercord.
3.Checkthepowercordfor:
a.Athird-wiregroundconnectoringoodcondition.Useametertomeasurethird-wireground
continuityfor0.1ohmorlessbetweentheexternalgroundpinandtheframeground.
b.Thepowercordshouldbetheauthorizedtypespeciedforyourcomputer.Goto:
http://www.lenovo.com/serviceparts-lookup.
c.Insulationmustnotbefrayedorworn.
4.Checkforcrackedorbulgingbatteries.
5.Removethecover.
6.Checkforanyobviousnon-Lenovoalterations.Usegoodjudgmentastothesafetyofanynon-Lenovo
alterations.
7.Checkinsidetheunitforanyobviousunsafeconditions,suchasmetallings,contamination,wateror
otherliquids,orsignsofreorsmokedamage.
8.Checkforworn,frayed,orpinchedcables.
9.Checkthatthepower-supplycoverfasteners(screwsorrivets)havenotbeenremovedortamperedwith.
Handlingdevicesthataresensitivetoelectrostaticdischarge
Anycomputerpartcontainingtransistorsorintegratedcircuits(ICs)shouldbeconsideredsensitiveto
electrostaticdischarge(ESD).ESDdamagecanoccurwhenthereisadifferenceinchargebetweenobjects.
ProtectagainstESDdamagebyequalizingthechargesothatthemachine,thepart,theworkmat,andthe
personhandlingthepartareallatthesamecharge.
Chapter1.Safetyinformation3
- HardwareMaintenanceManual 1
- SecondEdition(November2012) 2
- ©CopyrightLenovo2012 2
- Contents 3
- AppendixA.Notices..........97 4
- Aboutthismanual 5
- Chapter1.Safetyinformation 7
- Electricalsafety 8
- Safetyinspectionguide 9
- Groundingrequirements 10
- Chapter1.Safetyinformation5 11
- 6HardwareMaintenanceManual 12
- .Safetyinformation7 13
- Chapter1.Safetyinformation9 15
- Chapter1.Safetyinformation11 17
- 12HardwareMaintenanceManual 18
- .Safetyinformation13 19
- 14HardwareMaintenanceManual 20
- .Safetyinformation15 21
- 16HardwareMaintenanceManual 22
- Chapter1.Safetyinformation17 23
- 18HardwareMaintenanceManual 24
- .Safetyinformation19 25
- 20HardwareMaintenanceManual 26
- .Safetyinformation21 27
- 22HardwareMaintenanceManual 28
- StrategyforreplacingFRUs 29
- Howtouseerrorcodes 30
- Productdenition 30
- 26HardwareMaintenanceManual 32
- Chapter3.Generalcheckout 33
- Checkoutguide 34
- LenovoSolutionCenter 34
- Quicktestprograms 34
- UEFIdiagnosticprogram 35
- Bootablediagnosticprograms 35
- Powersystemcheckout 36
- Checkingtheacpoweradapter 36
- Checkingoperationalcharging 37
- Checkingthebatterypack 37
- Checkingthebackupbattery 38
- Passwords 41
- Power-onpassword 41
- Harddiskpassword 41
- Supervisorpassword 42
- Powermanagement 43
- Sleepmode 43
- Hibernationmode 43
- Symptom-to-FRUindex 44
- Numericerrorcodes 45
- Errormessages 45
- No-beepsymptoms 46
- LCD-relatedsymptoms 46
- Intermittentproblems 46
- Undeterminedproblems 47
- 42HardwareMaintenanceManual 48
- Chapter5.Statusindicators 49
- 44HardwareMaintenanceManual 50
- Chapter6.Specialkeys 51
- 46HardwareMaintenanceManual 52
- Chapter7.Locations 53
- Rearview 54
- Bottomview 54
- LocatingFRUsandCRUs 54
- .Locations49 55
- MajorFRUsandCRUs 56
- .Locations51 57
- LCDFRUsandCRUs 58
- LookingupFRUinformation 59
- 54HardwareMaintenanceManual 60
- Screwnotices 61
- Generalguidelines 63
- 1010Batterypack 64
- 1020Largebottomcover 65
- 1030Smallbottomcover 66
- 1040Opticaldriveorblankbezel 66
- 1050Memorymodules 67
- 1060Harddiskdriveassembly 68
- .RemovingorreplacingaFRU63 69
- •“1010Batterypack”onpage58 70
- 64HardwareMaintenanceManual 70
- 1080Backupbattery 71
- 1090Thermalfan 72
- 1100Thermalpipes 73
- 1110Keyboard 75
- Removalstepsofkeyboard 76
- 70HardwareMaintenanceManual 76
- Installationstepsofkeyboard 77
- 1.Attachtheconnectors 77
- .RemovingorreplacingaFRU71 77
- Removalstepsoftouchpad 81
- Removalstepsofdummycap 81
- .RemovingorreplacingaFRU75 81
- StepScrew(quantity)Color 82
- Black0.181Nm 82
- (1.85kgf-cm) 82
- 1140Systemboardassembly 83
- .RemovingorreplacingaFRU79 85
- 1150Speakerassembly 86
- Removalstepsofspeakerassembly 87
- .RemovingorreplacingaFRU81 87
- 1160Powerbuttonsubcard 88
- .RemovingorreplacingaFRU83 89
- 1180RJ45subcard 90
- RemovalstepsofRJ45subcard 91
- .RemovingorreplacingaFRU85 91
- 1190LCDunit 92
- .RemovingorreplacingaFRU87 93
- 88HardwareMaintenanceManual 94
- 2010LCDbezelassembly 96
- 2020LCDpanelandhinges 97
- Black0.294Nm 98
- (3kgf-cm) 98
- 94HardwareMaintenanceManual 100
- AppendixA.Notices 103
- Trademarks 104
- *1P0B48977_01* 106
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