Chapter 4. Customer Replacement Units (CRUs)

Customer Replacement Units (CRUs) are computer parts that can be upgraded or replaced by the customer. There are two types of CRUs: Tier 1 and Tier 2. Tier 1 CRUs are easy to install, whereas Tier 2 CRUs require some technical skill and tools.

The User Guide and Hardware Replacement Guide provide instructions for replacing Tier 1 and Tier 2 CRUs. Refer to the following table to determine which publication contains the instructions you need.

To view a publication, open the Start menu from the Windows desktop, select All Programs, select Online Books, and click Online Books. Double-click on the appropriate publication for your machine type. For more information about accessing the User Guide and Hardware Replacement Guide, refer to “Online Books folder” on page 15. The publications also are available on the Lenovo Web site at http://www.lenovo.com.

Note: Only use computer parts provided by Lenovo. Refer to Chapter 3, “Lenovo Statement of Limited Warranty,” on page 19 for warranty information about the CRUs for your machine type.

6490, 8700, 8701, 8705, 8717, 8973, 8975, 8979, 8983, 8985, 8991, 8995, 9265, 9269, 9277, 9279, 9283, 9287, 9379, 9383, 9387, 9389, 9631, 9635, 9637, 9646, 9648, 9694

User Guide

Hardware Replacement Guide

Tier 1 CRUs

Optical drive

x

x

 

 

 

Hard disk drive

x

x

 

 

 

Memory

x

x

 

 

 

Mouse

x

x

 

 

 

Keyboard

x

x

 

 

 

Adapter card

x

x

 

 

 

Tier 2 CRUs

 

 

Diskette drive

Heat sink

Power supply

System fan

x

x

 

x

 

x

 

x

 

 

© Lenovo 2005, 2006. Portions © IBM Corp. 2005.

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Lenovo Desktop PC warranty Customer Replacement Units CRUs

Desktop PC specifications

Lenovo desktop PCs are known for their innovative technologies, robust performance, and reliability, making them ideal for both home and business use. With a diverse range of models, Lenovo caters to various needs, whether for gaming, content creation, or general office work.

One of the standout features of Lenovo desktops is the integration of the latest Intel and AMD processors. These powerful CPUs deliver exceptional speed and efficiency, allowing users to tackle demanding applications and multitask with ease. The cutting-edge processors are complemented by ample RAM options, often up to 64GB, ensuring smooth operation even when running multiple applications simultaneously.

Lenovo's desktops come equipped with advanced graphics options. For gamers and creative professionals, models featuring NVIDIA GeForce or AMD Radeon graphics cards offer immersive visuals, making them suitable for high-definition gaming and graphic design work. The combination of high-quality graphics and powerful processors enhances the overall user experience, providing stunning visuals and fast rendering times.

Storage is another crucial aspect of Lenovo desktops, with options ranging from traditional hard disk drives (HDDs) to fast solid-state drives (SSDs). The inclusion of SSDs not only enhances boot times but also significantly speeds up data access and application loading. Users can choose from various configurations, giving them the flexibility to select the right balance between storage capacity and performance.

Lenovo desktops are also designed with connectivity in mind. They offer multiple USB ports, HDMI outputs, and Ethernet connections to ensure seamless integration with other devices and networks. Many models include built-in Bluetooth and Wi-Fi capabilities, allowing users to connect wirelessly with ease.

Thermal management is an essential characteristic of Lenovo PCs, ensuring optimal performance even during heavy workloads. Advanced cooling systems help prevent overheating, extending the lifespan of the components and maintaining peak performance.

Another notable aspect of Lenovo desktops is their user-friendly designs. Many models come with easy-to-access components for upgrades, ensuring that users can update their systems as needed. Additionally, Lenovo's commitment to sustainability ensures many of their products are energy-efficient, contributing to a lower carbon footprint.

Whether for home entertainment, professional work, or gaming, Lenovo desktop PCs offer a reliable solution packed with advanced features and technologies, making them a leading choice in the market.