Retaining serial numbers

This section includes the following descriptions:

v“Restoring the serial number of the system unit”

v“Retaining the UUID”

v“Reading or writing the ECA information” on page 52

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 CE Utility Diskette for Lenovo 3000 notebooks, 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:

v20: 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 CE Utility Diskette for Lenovo 3000 notebooks 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.

If the MTM and Product ID numbers differ from each other on the rear label, use what is shown for the Product ID field. See example below:

MTM on rear label:

TTTT-CTO S/N SSSSSSS

Product ID on rear label:

TTTT-MMM (Use this number when setting Serial Number)

In the example, the Serial Number to be input is ’1STTTTMMMSSSSSSS’.

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.

50Lenovo 3000 N500 Hardware Maintenance Manual

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Lenovo 3000 N500 manual Retaining serial numbers, Restoring the serial number of the system unit, Retaining the Uuid
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3000 N500 specifications

The Lenovo 3000 N500 is a versatile laptop that caters to the needs of both home and business users. Launched in the mid-2000s, it encompasses a blend of performance, design, and functionality that makes it a reliable choice for a range of applications.

One of the main features of the Lenovo 3000 N500 is its robust processing power. It typically comes equipped with Intel Core 2 Duo processors, offering dual-core performance for efficient multitasking. This capability is particularly beneficial for users who run multiple applications simultaneously or engage in resource-intensive tasks such as video editing, gaming, or graphic design.

In terms of memory, the N500 usually supports up to 4GB of DDR2 RAM, which enables smooth performance and responsiveness. Users can upgrade memory to enhance performance further, ensuring the device remains capable of handling contemporary applications.

Storage options for the Lenovo 3000 N500 include hard drives ranging from 120GB to 320GB, providing ample space for files, documents, and media. The inclusion of a DVD writer adds value, allowing users to easily read and write CDs and DVDs, essential for data backups or media sharing.

The display of the N500 features a 15.4-inch widescreen, offering a resolution of 1280 x 800 pixels. The vibrant display is well-suited for watching videos, browsing the web, or working on presentations. The integrated Intel Graphics Media Accelerator enhances visual performance, making it a suitable option for casual gaming and multimedia consumption.

Design-wise, the Lenovo 3000 N500 boasts a sturdy build with a sleek and professional appearance. Weighing approximately 5.5 pounds, it remains portable enough for on-the-go use while still providing a comfortable typing experience, thanks to its full-sized keyboard.

The laptop includes several connectivity options, such as USB ports, an Ethernet port, and a built-in wireless card, enabling easy connections to networks and peripherals. Additionally, the inclusion of a multi-card reader enhances its functionality, allowing users to quickly transfer data from various memory cards.

Lenovo’s commitment to user experience is evident in the battery life of the N500. With an average battery lifespan of around 3-4 hours, it allows for extended use without the constant need for recharge, a vital aspect for users who travel frequently.

In summary, the Lenovo 3000 N500 combines solid performance, practical features, and reliable connectivity, making it an ideal choice for users seeking a functional and durable laptop for both professional and personal use.
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