Lenovo THINKPAD E31 User Manual Page 52
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•T orquedriver
Ifyouhaveatorquedriver,refertothe“Torque”columnforeachstep.
•Makesurethatyouusethecorrectscrew.Ifyouhaveatorquescrewdriver,tightenallscrewsrmlytothe
torqueshowninthetable.Neveruseascrewthatyouremoved.Useanewone.Makesurethatall
ofthescrewsaretightenedrmly.
•Ensuretorquescrewdriversarecalibratedcorrectlyfollowingcountryspecications.
Retainingserialnumbers
Thissectionincludesthefollowingdescriptions:
•“Restoringtheserialnumberofthesystemunit”onpage46
•“RetainingtheUUID”onpage47
•“ReadingorwritingtheECAinformation”onpage47
Restoringtheserialnumberofthesystemunit
Whenthecomputerwasmanufactured,theEEPROMonthesystemboardwasloadedwiththeserial
numbersofthesystemandallmajorcomponents.Thesenumbersneedtoremainthesamethroughout
thelifeofthecomputer.
Ifyoureplacethesystemboard,youmustrestoretheserialnumberofthesystemunittoitsoriginalvalue.
Beforereplacingthesystemboard,savetheoriginalserialnumberbydoingthefollowing:
1.InstalltheLENOVOThinkPadHardwareMaintenanceDisketteVersion1.76orlater,andrestartthe
computer.
2.Fromthemainmenu,select1.SetSystemIdentication.
3.Select2.ReadS/NdatafromEEPROM.
Theserialnumberofeachdeviceinyourcomputerisdisplayed;theserialnumberofthesystemunitis
listedasfollows:
•20:Serialnumber
Writedownthatnumber.
Note:Theserialnumberofthesystemunitisalsowrittenonthelabelattachedtothebottomofthecomputer.
Afteryouhavereplacedthesystemboard,restoretheserialnumberbydoingthefollowing:
1.InstalltheLENOVOThinkPadHardwareMaintenanceDisketteVersion1.76orlaterandrestartthe
computer.
2.Fromthemainmenu,select1.SetSystemIdentication.
3.Select1.AddS/NdatafromEEPROM.Followtheinstructionsonthescreen.
IftheMTMandProductIDnumbersdifferfromeachotherontherearlabel,usewhatisshownforthe
ProductIDeld.Seeexamplebelow:
46HardwareMaintenanceManual
- HardwareMaintenanceManual 1
- AppendixA“Notices”onpage117 2
- Contents 3
- Chapter9.Locations.........89 4
- AppendixA.Notices.........117 4
- Aboutthismanual 5
- Chapter1.Safetyinformation 7
- 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
- .Safetyinformation17 23
- 18HardwareMaintenanceManual 24
- StrategyforreplacingFRUs 25
- Howtouseerrormessage 26
- Productdenition 26
- 22HardwareMaintenanceManual 28
- Chapter3.Generalcheckout 29
- Checkoutguide 30
- Testingthecomputer 31
- LenovoThinkVantageToolbox 33
- FRUtests 33
- Powersystemcheckout 34
- CheckingtheACadapter 34
- Checkingoperationalcharging 35
- Checkingthebatterypack 35
- Checkingthebackupbattery 36
- ©CopyrightLenovo2009,2011 37
- Passwords 38
- Power-onpassword 38
- Hard-diskpassword 38
- Supervisorpassword 39
- Powermanagement 40
- Screenblankmode 40
- Sleepmode 40
- Hibernationmode 40
- Symptom-to-FRUindex 41
- Numericerrorcodes 41
- 36HardwareMaintenanceManual 42
- Errormessages 43
- No-beepsymptoms 43
- LCD-relatedsymptoms 44
- Intermittentproblems 44
- Undeterminedproblems 45
- 40HardwareMaintenanceManual 46
- Chapter5.Statusindicators 47
- 42HardwareMaintenanceManual 48
- Chapter6.Specialkeys 49
- 44HardwareMaintenanceManual 50
- Screwnotices 51
- Retainingserialnumbers 52
- RetainingtheUUID 53
- 48HardwareMaintenanceManual 54
- 1010Batterypack 56
- 1020Bottomslotcover 56
- Assettaglabel 57
- 1030DIMM 58
- 1040Harddiskdrive(HDD) 59
- .RemovingandreplacingaFRU55 61
- StepScrew(quantity)Color 62
- Black0.181Nm 62
- (1.85kgfcm) 62
- 1070Keyboard 63
- Installationstepsofkeyboard 64
- 58HardwareMaintenanceManual 64
- 60HardwareMaintenanceManual 66
- .RemovingandreplacingaFRU61 67
- 1090Backupbattery 68
- 1110Speakerassembly 70
- Removalstepsofspeakerassembly 71
- .RemovingandreplacingaFRU65 71
- 1120Systemboardandfanassembly 72
- .RemovingandreplacingaFRU67 73
- 68HardwareMaintenanceManual 74
- ForAMDmodels(MT0221): 75
- .RemovingandreplacingaFRU69 75
- 70HardwareMaintenanceManual 76
- .RemovingandreplacingaFRU71 77
- 9,butdonotremovethem 78
- 74HardwareMaintenanceManual 80
- 1140LCDunit 81
- RemovalstepsofLCDunit 82
- 76HardwareMaintenanceManual 82
- .RemovingandreplacingaFRU77 83
- 2010LCDbezelassembly 86
- 2020Integratedcamera 87
- 2030LCDpanelandLCDcable 88
- .RemovingandreplacingaFRU83 89
- 2040Hingekit 90
- Removalstepsofhingekit 91
- •“1010Batterypack”onpage50 91
- .RemovingandreplacingaFRU85 91
- 88HardwareMaintenanceManual 94
- Chapter9.Locations 95
- Bottomview 96
- Chapter10.Partslist 97
- 92HardwareMaintenanceManual 98
- .Partslist93 99
- 94HardwareMaintenanceManual 100
- .Partslist95 101
- 96HardwareMaintenanceManual 102
- .Partslist97 103
- 98HardwareMaintenanceManual 104
- .Partslist99 105
- 100HardwareMaintenanceManual 106
- .Partslist101 107
- 102HardwareMaintenanceManual 108
- .Partslist103 109
- Keyboard 110
- ACadapters 111
- Miscellaneousparts 112
- Powercords 112
- Recoverydiscs 113
- Windows7HomeBasic(32bit)DVDs 113
- Chapter10.Partslist109 115
- 110HardwareMaintenanceManual 116
- Chapter10.Partslist111 117
- 112HardwareMaintenanceManual 118
- •0492-CTO 119
- .Partslist113 119
- 2Yx,33x,34x,36x,3Dx,3Cx 120
- •0250-CTO 120
- 114HardwareMaintenanceManual 120
- Commonservicetools 121
- 116HardwareMaintenanceManual 122
- AppendixA.Notices 123
- Trademarks 124
- *63Y0744_03* 126
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