Lenovo ThinkSmart Core Hardware Maintenance Manual

Also see for ThinkSmart Hub: User guide Deployment guide Hardware Maintenance Manual User guide Getting started

• Power cords, plugs, power adapters, extension cords, surge protectors, or power supplies that arecracked, broken, or damaged.• Signs of overheating, smoke, sparks, or fire.• Damage to a battery (such as cracks, dents, or creases), discharge from a battery, or a buildup of foreignsubstances on the battery.• A cracking, hissing, or popping sound, or strong odor that comes from the product.• Signs that liquid has been spilled or an object has fallen onto the computer product, the power cord, orpower adapter.• The computer product, power cord, or power adapter has been exposed to water.• The product has been dropped or damaged in any way.• The 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 foror by Lenovo, stop using that product until you can contact the product manufacturer for further instructions,or until you get a suitable replacement.Service and upgradesDo not attempt to service a product yourself unless instructed to do so by the Customer Support Center oryour 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 referredto as options. Replacement parts approved for customer installation are referred to as CustomerReplaceable Units, or CRUs. Lenovo provides documentation with instructions when it is appropriate forcustomers to install options or replace CRUs. You must closely follow all instructions when installing orreplacing parts. The Off state of a power indicator does not necessarily mean that voltage levels inside aproduct are zero. Before you remove the covers from a product equipped with a power cord, always ensurethat the power is turned off and that the product is unplugged from any power source. If you have anyquestions or concerns, contact the Customer Support Center.Although there are no moving parts in your computer after the power cord has been disconnected, thefollowing warnings are required for your safety.Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury, seekmedical care immediately.Do not touch hot surface of hot components inside the computer. During operation, some componentsbecome hot enough to burn the skin. Before you open the computer cover, turn off the computer, disconnectpower, and wait approximately 10 minutes for the components to cool.After replacing a CRU, reinstall all protective covers, including the computer cover, before connecting powerand operating the computer. This action is important to help prevent unexpected electrical shock and helpensure the containment of an unexpected fire that could happen under extremely rare conditions.2 ThinkSmart Core Kit Hardware Maintenance Manual