Retaining Serial Numbers; Restoring The Serial Number Of The System Unit - Lenovo ThinkPad X1 2-in-1 Gen 9 Hardware Maintenance Manual

6. Rotate the computer into Tablet mode and then follow the on-screen instructions to complete the
calibration process.
Note: You might need to rotate the LCD display in every aspect to ensure each mode works well.

Retaining serial numbers

This topic provides instructions on the following:
• "Restoring the serial number of the system unit" on page 55
• "Retaining the UUID" on page 56

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.
The serial number of the system unit is written on the label attached to the bottom of the computer.
If you cannot find the serial number of the system unit on the bottom of the computer, try the following
method to get the number:
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
Maintenance Key.
Note: Only an authorized Lenovo service technician can access the above Web site.
3. Restart the computer.
4. When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is
displayed.
and follow the instructions on the screen to create a
Chapter 7
.
FRU replacement notices
55