Lenovo IdeaPad Y460 - Manual (Page 14)

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Important safety information
Service and upgrades
Do NOT attempt to service a product yourself unless instructed to do
so by the customer support center or your documentation.
Attention:
• Do NOT take risks or attempt to diagnose the situation
yourself. Contact the customer support center for further
guidance. For a list of service and support phone numbers,
go to http://consumersupport.lenovo.com.
Lenovo provides documentation with instructions when it is
appropriate for customers to install options or replace units (CRUs).
Closely follow all instructions when installing or replacing parts.
Disconnect the attached power cords, battery pack, and all the cables
before you open the device covers, unless instructed otherwise in the
installation and configuration procedures.
Keep the covers closed whenever the computer is plugged in.