Retaining serial numbers
This section includes the following descriptions:
v
“Restoring the serial number of the system unit”
v
“Retaining the UUID”
v
“Reading or writing the ECA information” on page 81
Restoring the serial number of the system unit
When the computer was manufactured, the EEPROM on the system board was
loaded with the serial numbers of the system and all major components. These
numbers need to remain the same throughout the life of the computer.
If you replace the system board, you must restore the serial number of the system
unit to its original value.
Before replacing the system board, save the original serial number by doing the
following:
1.
Install the ThinkPad Hardware Maintenance Diskette Version 1.73 or later, and
restart the computer.
2.
From the main menu, select
1. Set System Identification
.
3.
Select
2. Read S/N data from EEPROM
.
The serial number of each device in your computer is displayed; the serial number
of the system unit is listed as follows:
v
20: Serial number
Write down that number.
Note:
The serial number of the system unit is also written on the label attached to
the bottom of the computer.
After you have replaced the system board, restore the serial number by doing the
following:
1.
Install the ThinkPad Hardware Maintenance Diskette Version 1.73 or later and
restart the computer.
2.
From the main menu, select
1. Set System Identification
.
3.
Select
1. Add S/N data from EEPROM
.
Follow the instructions on the screen.
If the MTM and Product ID numbers differ from each other on the rear label, use
what is shown for the Product ID field. See example below:
MTM on rear label:
TTTT-CTO S/N SSSSSSS
Product ID on rear label:
TTTT-MMM (Use this number when setting Serial Number)
In the example, the Serial Number to be input is ’1STTTTMMMSSSSSSS’.
Retaining the UUID
The Universally Unique Identifier (UUID) is a 128-bit number uniquely assigned to
your computer at production and stored in the EEPROM of your system board.
80
ThinkPad R500 Hardware Maintenance Manual
Summary of Contents for 2714 - ThinkPad R500 - Core 2 Duo T6670
Page 1: ...ThinkPad R500 Hardware Maintenance Manual ...
Page 2: ......
Page 3: ...ThinkPad R500 Hardware Maintenance Manual ...
Page 8: ...vi ThinkPad R500 Hardware Maintenance Manual ...
Page 18: ...10 ThinkPad R500 Hardware Maintenance Manual ...
Page 19: ...Safety information 11 ...
Page 26: ...18 ThinkPad R500 Hardware Maintenance Manual ...
Page 27: ...Safety information 19 ...
Page 28: ...20 ThinkPad R500 Hardware Maintenance Manual ...
Page 29: ...Safety information 21 ...
Page 30: ...22 ThinkPad R500 Hardware Maintenance Manual ...
Page 31: ...Safety information 23 ...
Page 34: ...26 ThinkPad R500 Hardware Maintenance Manual ...
Page 35: ...Safety information 27 ...
Page 37: ...Safety information 29 ...
Page 41: ...Safety information 33 ...
Page 42: ...34 ThinkPad R500 Hardware Maintenance Manual ...
Page 43: ...Safety information 35 ...
Page 45: ...Safety information 37 ...
Page 46: ...38 ThinkPad R500 Hardware Maintenance Manual ...
Page 78: ...70 ThinkPad R500 Hardware Maintenance Manual ...
Page 82: ...74 ThinkPad R500 Hardware Maintenance Manual ...
Page 86: ...78 ThinkPad R500 Hardware Maintenance Manual ...
Page 90: ...82 ThinkPad R500 Hardware Maintenance Manual ...
Page 144: ...136 ThinkPad R500 Hardware Maintenance Manual ...
Page 148: ...140 ThinkPad R500 Hardware Maintenance Manual ...
Page 222: ...214 ThinkPad R500 Hardware Maintenance Manual ...
Page 225: ......
