Sony STR-D990 Operating Instructions Manual page 34
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Also See for STR-D990:
- Operating instructions manual (41 pages) ,
- Limited warranty (1 page) ,
- Service manual (58 pages)
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Problem
There is an abrupt loss of sound from
one or both of the speakers, and the
PROTECTOR indicator flickers in the
display window.
Cause
A short-circuit problem activates the
protective circuit.
Solution
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.
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.
is reversed.
Connect the speaker with the correct
phase.
Severe hum or noise is heard.
Surround effect cannot be obtained.
he remote commander will not
nperate.
he equipment cannot be operated.
34
The connecting cords are not shielded
type.
A transformer, motor, TV or fluorescent
light affects the connecting cords.
The audio components are too close
to a TV set.
The unit is not grounded.
The connections are loose.
The plugs and jacks are dirty.
The unit is in a wrong mode.
The SOUND FIELD circuit is turned
off.
The batteries are exhausted.
The commander head is not pointed
toward the unit's front.
The mode of the receiver is not same
with that of the remote commander.
Use shielded type cords.
Place the connecting cords ina
location away from a transformer or
motor, and at least 3 meters (10 feet)
from a TV set or a fluorescent light.
If both are used at the same time,
separate the TV from the audio
components.
Connect the ground wire to the
antenna ground terminal.
Make secure connections.
Wipe the plugs and jacks with a cloth
lightly dampened with alcohol.
Press CURSOR MODE to set the
surround mode.
Press SOUND FIELD ON/OFF.
Replace the batteries with new ones.
Point the commander head toward the
receiver.
Press the desired FUNCTION button
again.
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