Lenovo ThinkPad X61 Tablet User Manual

v “Retaining the UUID”
v “Reading or writing the ECA information”
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 ThinkPad Hardware Maintenance Diskette Version 1.73 or later, and
restart the computer.
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:
v 20: Serial number
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 ThinkPad Hardware Maintenance Diskette Version 1.73 or later and
restart the computer.
2. From the main menu, select 1. Set System Identification.
3. Select 1. Add S/N data from EEPROM.
Follow the instructions on the screen.
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, you must set the UUID on the new system
board as follows:
1. Install the ThinkPad Hardware Maintenance Diskette Version 1.73 or later, and
restart the computer.
2. From the main menu, select 4. Assign UUID.
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) are 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.
FRU replacement notices
52 MT 6363, 6364, 6365, 6366, 6367, 6368, 7762, 7763, 7764, 7767, 7768, and 7769

Lenovo ThinkPad X61 Tablet Specifications

General

Bus type	FSB
Tjunction	100 °C
Processor cache	4 MB
Processor cores	2
Processor model	L7500
System bus rate	- GT/s
Processor family	Intel® Core™2 Duo
Processor series	Intel Core 2 Duo L7000 Series
Processor socket	Socket 479
Processor codename	Merom
Processing Die size	143 mm²
Processor frequency	1.6 GHz
Processor cache type	L2
Processor lithography	65 nm
Processor manufacturer	Intel
Processor front side bus	800 MHz
Processor operating modes	64-bit
ECC supported by processor	No
Thermal Design Power (TDP)	17 W
CPU multiplier (bus/core ratio)	8
Number of Processing Die Transistors	291 M
Memory slots	2x SO-DIMM
Maximum internal memory	4 GB
HDD capacity	120 GB
HDD interface	SATA
Compatible memory cards	SD
Display diagonal	12.1 \
Display resolution	1024 x 768 pixels
Native aspect ratio	4:3
Modem speed	56 Kbit/s
Graphics card	GMA X3100
Internal modem	Yes
Charging port type	DC-in jack
USB 2.0 ports quantity	3
CardBus PCMCIA slot type	Type II
Ethernet LAN (RJ-45) ports	1
Battery life (max)	2.9 h
Number of battery cells	4
Audio system	AD1984 Codec
Networking features	Gigabit Ethernet
Bundled software	Adobe Acrobat Reader, Sun JRE, ThinkVantage Productivity Center, ThinkVantage Access Connections, ThinkVantage Client Security Solution, ThinkVantage System Update, Norton Internet Security 2007 (OEM), Diskeeper 9.0 Home Edition, ThinkVantage Rescue and Recovery, PC-Doctor diagnostics
Processor ARK ID	29757
Processor package size	35 x 35 mm

Weight and Dimensions

Depth	244 mm
Width	274 mm
Height	33 mm
Weight	1800 g