There Is No Sound From One Of The Front Speakers; There Is No Sound Or Only A Very Low-Level Sound Is Heard; There Is Severe Hum Or Noise; There Is No Sound From The Center Speaker - Sony STR-DB1070 Operating Instructions Manual

Troubleshooting (continued)
There is no sound from one of the front
speakers.
l
Connect a pair of headphones to the PHONES
jack to verify that sound is output from the
headphones (see page 26).
If 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.
There is no sound or only a very low-level sound
is heard.
l
Check that the speakers and components are
connected securely.
l
Check that you have selected the correct
component on the receiver.
l
Check that the SPEAKERS switch is set to ON
(see page 26).
l
Check that the headphones are not connected.
l
Press MUTING if muting function is activated.
l
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.
l
When only a very low-level sound is heard,
check to see if NIGHT MODE is activated (see
page 31).
The left and right sounds are unbalanced or
reversed.
l
Check that the speakers and components are
connected correctly and securely.
l
Adjust balance parameters in the LEVEL menu.
There is severe hum or noise.
l
Check that the speakers and components are
connected securely.
l
Check that the connecting cords are away from a
transformer or motor, and at least 3 meters away
from a TV set or fluorescent light.
l
Move your TV away from the audio components.
l
Make sure you have grounded ,& SIGNAL GND
terminal (only when a turntable is connected).
l
The plugs and jacks are dirty. Wipe them with a
cloth slightly moistened with alcohol.
There is intermittent sound from a digital source.
l
Check to see if signals with 96 kHz sampling
frequencies are input to the DVD/LD OPTICAL
IN or COAXIAL jacks.
There is no sound from the center speaker.
l
Make sure the sound field function is on (press
MODE +/-).
l
Select a sound field containing the word
"CINEMA" or "VIRTUAL" (see page 28-30).
l
Adjust the speaker level (see page 35).
l
Make sure the center speaker size parameter is
set to either "SMALL," or "LARGE" (see page
20).
There is no sound or only a very low-level sound
is heard from the surround/surround back
speakers.
l
Make sure the sound field function is on (press
MODE +/-).
l
Select a sound field containing the word
"CINEMA" or "VIRTUAL" (see page 28-30).
l
Adjust the speaker level (see page 35).
l
Make sure the surround/surround back speaker
size parameter is set to either "SMALL" or
"LARGE" (see naszes 2621).
There is no sound from the active sub woofer.
l
There is no sound output from the SUB
WOOFER terminal depending on the sound field
(see page 59).
The surround effect cannot be obtained.
l
Make sure the sound field function is on (press
MODE +I-).
Dolby Digital or DTS multi channel sound is not
reproduced.
l
Check that the playing DVD, etc. is recorded in
Dolby Digital or DTS format.
l
When connecting the DVD player, etc. to the
digital input jacks of this receiver, check the
audio
setting (settings for the audio output) of the
connected component.
50