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General Safety Guidelines; Service - Lenovo GP20N User Manual

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General safety guidelines

Always observe the following precautions to reduce the risk of injury
and property damage.

Service

Do not attempt to service a product yourself unless instructed to do
so by the Customer Support Center. Use only a service provider who
is approved to repair your particular product.
Note: Some parts can be upgraded or replaced by the customer.
These parts are referred to as Customer Replaceable Units, or
CRUs. Lenovo expressly identifies CRUs as such, and provides
documentation with instructions when it is appropriate for
customers to replace those parts. You must closely follow all
instructions when performing such replacements. The Off
state of a power indicator does not necessarily mean that
voltage levels inside a product are zero. Always make sure
that the power is turned off and that the product is unplugged
from any power source before you attempt the replacement. If
you have any questions or concerns, contact the Customer
Support Center.
© Copyright Lenovo 2009
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