Sony STR-DE725 - Manual (Page 18)

There's no sound from a specific component.
^ Check that the component is connected correctly to
the audio input jacks for that component.
^ Check that the cord(s) used for the connection is
(are) fully inserted into the jacks on bothjjie
receiver and the component.
No sound is heard from' one of the front
speakers.
^ Check that the BALANCE control is set at center
position (see "[6] BALANCE control" on'page 21).
^ Connect a pair of headphones to the PHONES jack
and set the SPEAKERS selector to OFE to verify
that sound is output from the headphones (see "fsl
SPEAKERS selector" and “PHONES jack" on page
21 ) .
[f only one channel is output from the headphones,
the component may not be connected to the
receiver correctly. Check that all the cords are fully
inserted into the jacks on both the receiver and the
component.
If both channels are output from the headphones,
the front speaker may not be connected to the
receiver correctly. Check the connection of the
front speaker which is not outputting any sound.
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If you encounter a problem that is not included above, see
"Troubleshooting" on page 41.
19