Service And Upgrades - Lenovo 06472AU User Manual

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 information on
CRUs, see Appendix B, "Customer Replaceable Units (CRUs)," on page 139. 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.
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