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IdeaPad Y560 Hardware Maintenance Manual
Retaining serial numbers
This section presents the following descriptions:
• "Restoring the serial number of the system unit" on page 38
• "Retaining the UUID" on page 39
• "Reading or writing the ECA information " on page 40
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 CE Utility Diskette for Lenovo IdeaPad notebooks, and restart the
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:
•
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 CE Utility Diskette for Lenovo IdeaPad notebooks and restart the
2. From the main menu, select 1. Set System Identification.
3. Select 1. Add S/N data from EEPROM.
If the MTM and Product ID numbers differ from each other on the rear label,
apply what is shown for the Product ID field. See the following example:
MTM on rear label:
Product ID on rear label:
In the example, the Serial Number to be applied is '1STTTTMMMSSSSSSS'.
38
computer.
20: Serial number
computer.
Follow the instructions on the screen.
TTTT-CTO S/N SSSSSSS
TTTT-MMM
(apply this number when setting Serial Number)
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