In the unlikely event that you notice any of the following conditions, or if you have any safety concerns with your product, stop using the product and unplug it from the power source and telecommunication lines until you can speak to the Customer Support Center for further guidance. See Chapter 8, “Getting information, help, and service,” on page 61 for more information.
vPower cords, plugs, power adapters, extension cords, surge protectors, or power supplies that are cracked, broken, or damaged.
vSigns of overheating, smoke, sparks, or fire.
vDamage to a battery (such as cracks, dents, or creases), discharge from a battery, or a buildup of foreign substances on the battery.
vA cracking, hissing, or popping sound, or strong odor that comes from the product.
vSigns that liquid has been spilled or an object has fallen onto the computer product, the power cord, or power adapter.
vThe computer product, power cord, or power adapter has been exposed to water.
vThe product has been dropped or damaged in any way.
vThe product does not operate normally when you follow the operating instructions.
Note: If you notice these conditions with a product (such as an extension cord) that is not manufactured for or by Lenovo, stop using that product until you can contact the product manufacturer for further instructions, or until you get a suitable replacement.
General safety guidelines
Always observe the following precautions to reduce the risk of injury and property damage.
Service and upgrades
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. If you have any questions or concerns, contact the Customer Support Center.
Although there are no moving parts in your computer after the power cord has been disconnected, the following warnings are required for your safety.
viUser Guide