Sharp VL-E40S Technical Information Seite 60

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Seitenansicht 59
T orquedriver
Ifyouhaveatorquedriver,refertothe“Torque”inthescrewinformationtableforeachstep.
Makesurethatyouusethecorrectscrew.Itisrecommendedtousenewscrewsforreplacements.If
youhaveatorquescrewdriver,tightenallscrewsrmlytothetorquespeciedinthescrewinformation
tableforeachstep.
Ensuretorquescrewdriversarecalibratedcorrectlybyfollowingcountryspecications.
Retainingserialnumbers
Thistopicprovidesinstructionsonthefollowing:
“Restoringtheserialnumberofthesystemunit”onpage54
“RetainingtheUUID”onpage55
“ReadingorwritingtheECAinformation”onpage55
Restoringtheserialnumberofthesystemunit
Whenthecomputerwasmanufactured,theEEPROMonthesystemboardwasloadedwiththeserial
numbersofthesystemandallmajorcomponents.Thesenumbersneedtoremainthesamethroughout
thelifeofthecomputer.
Ifyoureplacethesystemboard,youmustrestoretheserialnumberofthesystemunittoitsoriginalvalue.
Beforereplacingthesystemboard,savetheoriginalserialnumberbydoingthefollowing:
1.InstallthelatestversionofLENOVOThinkPadHardwareMaintenanceDisketteorMaintenanceKey,
andthenrestartthecomputer.
2.Fromthemainmenu,select1.Setsystemidentication.
3.Turnoffthecomputer,andthenturnonthecomputeragain.
4.WhentheThinkPadlogoisdisplayed,pressEsc.
5.Select2.ReadS/NdatafromEEPROMandfollowtheinstructionsonthescreen.Theserialnumberof
eachdeviceinyourcomputerisdisplayed;theserialnumberofthesystemunitislistedasfollows:
20Serialnumber
6.Writedownthatnumber.
Note:Theserialnumberofthesystemunitisalsowrittenonthelabelattachedtothebottomofthe
computer.
Afteryouhavereplacedthesystemboard,restoretheserialnumberbydoingthefollowing:
1.InstallthelatestversionofLENOVOThinkPadHardwareMaintenanceDisketteorMaintenanceKey,
andthenrestartthecomputer.
2.Fromthemainmenu,select1.Setsystemidentication.
3.Turnoffthecomputer,andthenturnonthecomputeragain.
4.WhentheThinkPadlogoisdisplayed,pressEsc.
5.Select1.AddS/NdatafromEEPROM.Followtheinstructionsonthescreen.
54HardwareMaintenanceManual
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