Sony STR-DE475 Operating Instructions Manual page 13

Short=circuiting of the speakers may damage the receiver.
To prevent this, make sure to take the following
precautions when connecting the speakers.
Make sure the stripped ends of each speaker cord
does not touch another speaker terminal or the
stripped end of another speaker cord.
Examples of poor conditions of the speaker cord
Stripped speaker cord is touching another speaker terminal.
After connecting all the components, speakers,
and AC power cord, output a test tone to check
that all the speakers are connected correctly. For
details on outputting a test tone, see page 18.
If no sound is heard fl'om a speaker while outputting a
test tone or a test tone is output fl'om a speaker other than
the one whose name is currently displayed on the
receiver, the speaker may be short=circuited. If this
happens, check the speaker connection again.
Make sure that you turn down the volume before you
turn off the receiver. When you turn on the receiver, the
volume remains at the level you turn off the receiver.
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Stripped cords are touching each other due to excessive
removal of insulation.
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