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7. ThinkPad R500 の取扱説明書・マニュアル

ThinkPad R500の取扱説明書・マニュアル [全226ページ 6.93MB]

The algorithm that generates the number is designed to provide unique IDs untilthe year A.D. 3400. No two computers in the world have the same number.When you replace the system board, you must set the UUID on the new systemboard as follows:1.Install the ThinkPad Hardware Maintenance Diskette Version 1.73 or later, andrestart the computer.2.From the main menu, select 4. Assign UUID.A new UUID is created and written. If a valid UUID already exists, it is notoverwritten.Reading or writing the ECA informationInformation on Engineering Change Announcements (ECA) are stored in theEEPROM of the system board. The electronic storage of this information simplifiesthe procedure to check if the ECA has been previously applied to a machine. Themachine does not need to be disassembled to check for the ECA application.To check what ECAs have been previously applied to the machine, use the ECAInformation Read/Write function on the ThinkPad Hardware Maintenance DisketteVersion 1.73 or later.1.Insert the ThinkPad Hardware Maintenance Diskette Version 1.73 or later, andrestart the computer.2.From the main menu, select 6. Set ECA Information .3.To read ECA information, select 2. Read ECA/rework number from EEPROMand follow the instruction.4.To read box build date, select 5. Read box build date from EEPROM , andfollow the instruction on the screen.After an ECA has been applied to the machine, the EEPROM must be updated toreflect the ECA's application. Use the ThinkPad Hardware Maintenance DisketteVersion 1.73 or later to update the EEPROM.Note:Only the ECA number is stored in the EEPROM. The machine type of theECA is assumed be the same as the machine type of the machine that had the ECAapplied to it.1.Insert the ThinkPad Hardware Maintenance Diskette Version 1.73 or later, andrestart the computer.2.From the main menu, select 6. Set ECA Information .3.To write ECA information, select 1. Write ECA/rework number from EEPROM ,and follow the instruction.4.To write box build date, select 4. Write box build date from EEPROM , andfollow the instruction on the screen.If the system board is being replaced, try to read the ECA information from the oldsystem board and transfer the information to the new system. If the system boardis inoperable, this will not be possible.FRU replacement notices 81

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