Lenovo Thinkpad X13 Yoga Gen 3 Hardware Maintenance Manual Download

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4. When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is

displayed.

5. Type 1 under

Enter the action desired

, then press Enter. The ThinkPad Serial Number Update Utility for

Asset ID screen is displayed.

6. Type 2 under

Enter the action desired

, then press Enter. The serial number of each device in your

computer is displayed; the serial number of the system unit is listed as follows:

20-

Serial number

7. Record the serial number of the system unit.

After you replace the system board, do the following to restore the serial number of the system unit:

1. Connect the Maintenance Key to the computer.

2. When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is

displayed.

3. Type 1 under

Enter the action desired

, then press Enter. The ThinkPad Serial Number Update Utility for

Asset ID screen is displayed.

4. Type 1 under

Enter the action desired

, then press Enter. Then follow the instructions on the screen to

restore the serial number of the system unit.

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.

The algorithm that generates the number is designed to provide unique IDs until the year A.D. 3400. No two
computers in the world have the same number.

When you replace the system board, perform the following steps to create a new UUID for the system board
if the system board does not have a UUID:

Note:

For Intel models, before you perform the operation, ensure that the UEFI/Legacy setting within the

Startup

menu in the ThinkPad Setup program is set to

UEFI Only

1. Connect a USB memory key to the computer.

2. Go to

https://www.lenovo.com/maintenanceutilities

and follow the instructions on the screen to create a

Maintenance Key.

Note:

Only an authorized Lenovo service technician can access the above Web site.

3. Restart the computer.

4. When the logo screen is displayed, press Esc. The ThinkPad Config Information Update Utility interface

is displayed.

5. Type 2 under

Enter the action desired

, then press Enter. The Auto UUID generation utility interface is

displayed.

6. Type y under

Change UUID. OK? [Y/N]

, then press Enter. A new UUID is created and written. If a valid

UUID already exists, it is not overwritten.

Reading or writing the ECA information

Information on Engineering Change Announcements (ECA) is stored in the EEPROM of the system board.
The electronic storage of this information simplifies the procedure to check if the ECA has been previously
applied to a machine. The machine 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 ECA Information Read/Write
function on the LENOVO ThinkPad Hardware Maintenance Diskette or Maintenance Key.

X13 Yoga Gen 3 Hardware Maintenance Manual