Sony STR-AV720 Operating Instructions - Page 25

Sony STR-AV720 Manual

Page 25 highlights

Sound Problem No sound is heard even if you adjust VOLUME. Sound is heard only at a very low volume. One channel does not transmit audio, or the volume from the left and right speakers is unbalanced. There is an abrupt loss of sound from one or both of the speakers, and the PROTECTOR indicator flickers in the display window. Sound transmitted from the speakers is reversed. There is lack of bass sound or the instrument position is obscure. Severe hum or noise is heard. Cause Solution The speaker or program source equipment is not connected correctly. Connect the equipment correctly. The SPEAKERS selector is not set correctly. Set the selector correctly. The TAPE 2 MONITOR button has been pressed for a program source other than tape deck 2. (The indicator is lit.) Press the button to disengage. A wrong FUNCTION selector has been Press the correct FUNCTION selector. pressed. The MUTING button has been pressed. Press the button to disengage. (The MUTING indicator is lit.) The BALANCE control is not set appropriately. Adjust the BALANCE control. The speaker or program source is not connected correctly. Check and properly connect the equipment. A short-circuit problem activates the protective circuit. Turn off the unit, eliminate the short, circuit problem and turn on the power again. If there is no short-circuit problem, consult your nearest Sony dealer. The speakers are not connected correctly. Connect the right speaker to the R SPEAKER terminals and the left speaker to the L SPEAKER terminals. The + / - connection of the speaker is Connect the speaker with the correct reversed. phase. The connecting cords are not shielded type. A transformer, motor, TV or fluorescent light affects the connecting cords. Use shielded type cords. Place the connecting cords in a location away from a transformer or motor, and at least 3 meters (10 feet) from a TV set or a fluorescent light. The audio components are too close to a TV set. If both are used at the same time, separate the TV from the audio components. The unit is not grounded. Connect the ground wire to the antenna ground terminal. The connections are loose. Make secure connections. The plugs and jacks are dirty. Wipe the plugs and jacks with a cloth lightly dampened with alcohol. 25

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27

Sound
Problem
Cause
Solution
No
sound
is
heard
even
if
you
adjust
VOLUME.
The
speaker
or
program
source
equipment
is
not
connected
correctly.
Connect
the
equipment
correctly.
The
SPEAKERS
selector
is
not
set
correctly.
Set
the
selector
correctly.
The
TAPE
2
MONITOR
button
has
been
pressed
for
a
program
source
other
than
tape
deck
2.
(The
indicator
is
lit.)
Press
the
button
to
disengage.
A
wrong
FUNCTION
selector
has
been
pressed.
Press
the
correct
FUNCTION
selector.
Sound
is
heard
only
at
a
very
low
volume.
The
MUTING
button
has
been
pressed.
(The
MUTING
indicator
is
lit.)
Press
the
button
to
disengage.
One
channel
does
not
transmit
audio,
or
the
volume
from
the
left
and
right
speakers
is
unbalanced.
The
BALANCE
control
is
not
set
appropriately.
Adjust
the
BALANCE
control.
The
speaker
or
program
source
is
not
connected
correctly.
Check
and
properly
connect
the
equipment.
There
is
an
abrupt
loss
of
sound
from
one
or
both
of
the
speakers,
and
the
PROTECTOR
indicator
flickers
in
the
display
window.
A
short-circuit
problem
activates
the
protective
circuit.
,
Turn
off
the
unit,
eliminate
the
short
-
circuit
problem
and
turn
on
the
power
again.
If
there
is
no
short-circuit
problem,
consult
your
nearest
Sony
dealer.
Sound
transmitted
from
the
speakers
is
reversed.
The
speakers
are
not
connected
correctly.
Connect
the
right
speaker
to
the
R
SPEAKER
terminals
and
the
left
speaker
to
the
L
SPEAKER
terminals.
There
is
lack
of
bass
sound
or
the
instrument
position
is
obscure.
The
+
/
connection
of
the
speaker
is
reversed.
Connect
the
speaker
with
the
correct
phase.
Severe
hum
or
noise
is
heard.
The
connecting
cords
are
not
shielded
type.
Use
shielded
type
cords.
A
transformer,
motor,
TV
or
fluorescent
light
affects
the
connecting
cords.
Place
the
connecting
cords
in
a
location
away
from
a
transformer
or
motor,
and
at
least
3
meters
(10
feet)
from
a
TV
set
or
a
fluorescent
light.
The
audio
components
are
too
close
to
a
TV
set.
If
both
are
used
at
the
same
time,
separate
the
TV
from
the
audio
components.
The
unit
is
not
grounded.
Connect
the
ground
wire
to
the
antenna
ground
terminal.
The
connections
are
loose.
Make
secure
connections.
The
plugs
and
jacks
are
dirty.
Wipe
the
plugs
and
jacks
with
a
cloth
lightly
dampened
with
alcohol.
25