IBM 600X (MT 2646) manual Retaining serial numbers, Restoring serial number of the system

FRU replacement notices

have a torque screwdriverNever use. a screw that

you removed. Use a new one. Make sure the screws are tightened firmly

Retaining serial numbers

This section includes the following descriptions:

Ÿ “Restoring serial number of the system unit”

Ÿ“Retaining the UUID”

Restoring serial number of the system

unit: When the computer was manufactured, the EEPROM on the system board was loaded with the s numbers of the system and all major components. The system serial number must remain the same througho the life of the computer.

When you replace the system board, you must re system unit serial number to its original value.

Before replacing the system board, save the ori number by doing the following:

1.Install the ThinkPad Hardware Maintenance Disket Version 1.60 and restart the computer.

2.From the main menu, select1. Set System

Identification .

3. Select2. Read S/N data from EEPROM .

The serial number for each device is displayed. down the serial number of the system unit, desig follows:

20: System unit serial number

After you have replaced the system board, rest serial number by doing the following:

1.Install the ThinkPad Hardware Maintenance Disket Version 1.60 and restart the computer.

2.From the main menu, select1. Set System

Identification .

3. Select1. Add

S/N

data

from

EEPROM .

Follow

the

instructions

on

the

screen.

Note:

The

serial

number of the system unit is wri

the

label

attached

on

the

bottom

of

the

c

Retaining the

UUID:

The Universally Unique

IDentifier

(UUID) is

a

128-bit number uniquely

your

computer

at

production

and

stored

in

the

EEP

your system board. The algorithm that generates t unique number is designed to provide unique IDs year A.D. 3400. No two computers in the world hav same number.

When you replace the system board, you must se UUID on the new system board as follows:

34 ThinkPad 600X Hardware Maintenance Manual