Sharp VL-E40S Informations techniques Page 61

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IftheMTMandProductIDnumbersdifferfromeachotherontherearlabel,usewhatisshownforthe
ProductIDeld.Seethefollowingexample:
MTMontherearlabel:
TTTT-CTOS/NSSSSSSS
ProductIDontherearlabel:
TTTT-MMM(UsethisnumberwhensettingSerialNumber.)
Intheexample,theSerialNumbertobeinputis“1STTTTMMMSSSSSSS”.
RetainingtheUUID
TheUniversallyUniqueIdentier(UUID)isa128-bitnumberuniquelyassignedtoyourcomputerat
productionandstoredintheEEPROMofyoursystemboard.
ThealgorithmthatgeneratesthenumberisdesignedtoprovideuniqueIDsuntiltheyearA.D.3400.Notwo
computersintheworldhavethesamenumber.
Whenyoureplacethesystemboard,followthefollowingstepstocreatenewUUIDforthesystemboardif
thesystemboarddoesnothaveaUUID:
1.InstallthelatestversionofLENOVOThinkPadHardwareMaintenanceDisketteorMaintenanceKey,
andthenrestartthecomputer.
2.Fromthemainmenu,select4.AssignUUID.AnewUUIDiscreatedandwritten.IfavalidUUIDalready
exists,itisnotoverwritten.
ReadingorwritingtheECAinformation
InformationonEngineeringChangeAnnouncements(ECA)arestoredintheEEPROMofthesystemboard.
TheelectronicstorageofthisinformationsimpliestheproceduretocheckiftheECAhasbeenpreviously
appliedtoamachine.ThemachinedoesnotneedtobedisassembledtocheckfortheECAapplication.
TocheckwhatECAshavebeenpreviouslyappliedtothemachine,usetheECAInformationRead/Write
functionontheLENOVOThinkPadHardwareMaintenanceDisketteorMaintenanceKey.
1.InsertthelatestversionofLENOVOThinkPadHardwareMaintenanceDisketteorMaintenanceKey,
andthenrestartthecomputer.
2.Fromthemainmenu,select6.SetECAInformation.
3.ToreadtheECAinformation,select2.ReadECA/reworknumberfromEEPROMandfollowthe
instructionsonthescreen;Toreadboxbuilddate,select5.ReadboxbuilddatefromEEPROM,and
followtheinstructionsonthescreen.
AfteranECAhasbeenappliedtothemachine,theEEPROMmustbeupdatedtoreecttheECA's
application.UsethelatestversionofLENOVOThinkPadHardwareMaintenanceDisketteorMaintenance
KeytoupdatetheEEPROM.
Note:OnlytheECAnumberisstoredintheEEPROM.ThemachinetypeoftheECAisassumedtobethe
sameasthemachinetypeofthemachinethathadtheECAappliedtoit.
1.InsertthelatestversionofLENOVOThinkPadHardwareMaintenanceDisketteorMaintenanceKey,
andthenrestartthecomputer.
2.Fromthemainmenu,select6.SetECAInformation.
3.TowritetheECAinformation,select1.WriteECA/reworknumberfromEEPROM,andfollowthe
instruction;Towriteboxbuilddate,select4.WriteboxbuilddatefromEEPROM,andfollowthe
instructiononthescreen.
Chapter7.FRUreplacementnotices55
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