NEC DAC Battery N8103-102 - Manual (Page 12)

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Cleaning and Working wit h the Product
WARNING
Do not disassemble, repair, or alter the server.
Never attempt to disassemble, repair, or alter the product on any occasion. Failure
to follow this instruction may cause an electric shock or fire as well as malfunctions
of the product.
Disconnect the power plug before accessing inside the server.
OFF AC
OFF
Make sure to power off the server and disconnect the power plug from a AC outlet
before accessing inside the server. Touching any internal device of the server with
its power cord connected to a power source may cause an electric shock even if the
server is off-powered.
CAUTION
Make sure to complete installation.
DC
Always connect the DC cable and/or interface cable firmly. An incompletely
connected cable may cause a contact failure, resulting in smoking or fire.