Additional Information; Troubleshooting - Sony STR-DE975 Operating Instructions Manual

Additional
Information

Troubleshooting

If you experience any of the following difficulties while
using the receiver, use this troubleshooting guide to help
you remedy the problem. Also, see "Checking the
connections" on page 24 to verify that the connections are
correct. Should any problem persist, consult your nearest
Sony dealer.
There's no sound or only a very low-level sound
is heard.
, Check that the speakers and components are
connected securely.
, Make sure that you've selected the correct
component on the receiver.
, Press SPEAKERS button if SP. OFF appears on the
display.
, Check that the headphones are not connected.
, Press MUTING if MUTING appears on the display.
, The protective device on the receiver has been
activated because of a short circuit. Turn off the
receiver, eliminate the short-circuit problem and
turn on the power again.
The left and right sounds are unbalanced or
reversed.
, Check that the speakers and components are
connected correctly and securely.
, Adjust front balance parameter in the LEVEL
menu.
Severe hum or noise is heard.
, Check that the speakers and components are
connected securely.
, Check that the connecting cords are away from a
transformer or motor, and at least 10 feet (3 meters)
away from a TV set or fluorescent light.
, Move your TV away from the audio components.
, Make sure you've grounded U SIGNAL GND
terminal (only when a turntable is connected).
, The plugs and jacks are dirty. Wipe them with a
cloth slightly moistened with alcohol.
There is intermittent sound from a digital source.
, Check to see if signals with 96 kHz sampling
frequencies are input to the DVD/LD OPTICAL IN
or COAXIAL jacks.
No sound is heard from the center speaker.
, Make sure the sound field function is on (press
SOUND FIELD MODE).
, Select the appropriate center mode (see pages
31 – 33).
, Adjust the speaker volume (see page 23).
, Make sure the center speaker size parameter is set
to either SMALL or LARGE (see page 20).
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