Lenovo 10023 Safety And Warranty Manual - Page 8

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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.

Danger

Hazardous moving parts. Keep fingers and other body parts away.

Attention

Before replacing any CRUs, turn off the computer and wait three to five

minutes to let the computer cool before opening the cover.

Safety and warranty guide