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:
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 http://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.
1. Insert the latest version of LENOVO ThinkPad Hardware Maintenance Diskette or Maintenance Key,
and then restart the computer.
2. From the main menu, select
6. Set ECA Information
.
3. To read the ECA information, select
2. Read ECA/rework number from EEPROM
and follow the
instructions on the screen; To read box build date, select
5. Read box build date from EEPROM
, and
follow the instructions on the screen.
After an ECA has been applied to the machine, the EEPROM must be updated to reflect the ECA's
application. Use the latest version of LENOVO ThinkPad Hardware Maintenance Diskette or Maintenance
Key to update the EEPROM.
Note:
Only the ECA number is stored in the EEPROM. The machine type of the ECA is assumed to be the
same as the machine type of the machine that had the ECA applied to it.
Chapter 8
.
FRU replacement notices
59
Summary of Contents for YhinkPad T460
Page 1: ...Hardware Maintenance Manual ThinkPad T460 ...
Page 6: ...iv Hardware Maintenance Manual ...
Page 11: ...DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information 5 ...
Page 12: ...6 Hardware Maintenance Manual ...
Page 13: ...PERIGO PERIGO PERIGO PERIGO Chapter 1 Safety information 7 ...
Page 14: ...PERIGO PERIGO PERIGO PERIGO DANGER 8 Hardware Maintenance Manual ...
Page 15: ...DANGER DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information 9 ...
Page 16: ...DANGER VORSICHT VORSICHT VORSICHT VORSICHT 10 Hardware Maintenance Manual ...
Page 17: ...VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information 11 ...
Page 18: ...12 Hardware Maintenance Manual ...
Page 19: ...Chapter 1 Safety information 13 ...
Page 20: ...14 Hardware Maintenance Manual ...
Page 21: ...Chapter 1 Safety information 15 ...
Page 22: ...16 Hardware Maintenance Manual ...
Page 23: ...Chapter 1 Safety information 17 ...
Page 24: ...18 Hardware Maintenance Manual ...
Page 28: ...22 Hardware Maintenance Manual ...
Page 46: ...40 Hardware Maintenance Manual ...
Page 50: ...44 Hardware Maintenance Manual ...
Page 56: ...LCD FRUs 2 1 2 2 2 3 2 4 2 5 2 6 7 8 7 7 7 9 50 Hardware Maintenance Manual ...
Page 62: ...56 Hardware Maintenance Manual ...
Page 89: ...b c a Removal steps of the system board Chapter 9 Removing or replacing a FRU 83 ...
Page 107: ......
Page 108: ...Part Number SP40K04896 Printed in China 1P P N SP40K04896 1PSP40K04896 ...