Lenovo U110 U110 Lenovo Safety and Warranty Guide V1.0 - Page 13

Lenovo SWG V1.0.book Page 5 Friday, February 29, 2008 1:39 PM Safety Guidelines Always observe the following precautions to reduce the risk of injury and property damage. Service and Upgrades CAUTION Do not attempt to service a product yourself unless instructed to do so by the Customer Support Center or your documentation. Only use a service provider who is approved to repair your particular product. Note: Some computer parts can be upgraded or replaced by the customer. Upgrades typically are referred to as options. Replacement parts approved for customer installation are referred to as Customer Replaceable Units, or CRUs. Lenovo provides documentation with instructions when it is appropriate for customers to install options or replace CRUs. You must closely follow all instructions when installing or replacing parts. The Off state of a power indicator does not necessarily mean that voltage levels inside a product are zero. Before you remove the covers from a product equipped with an ac power cord, always make sure that the power is turned off and that the product is unplugged from any power source. For more Chapter 1. Important Safety Information 5