Sony STR-D915 Operating Instructions Manual page 27

Problem
There is an abrupt loss of sound from |
one or both of the speakers, and the.
PROTECTOR indicator flickers on the .
display.
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.
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.
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.
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.
Place TV away 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.
No sound or sound at very low level is'
heard from rear speakers.
Surround effect cannot be obtained.
The remote commander will not
operate.
The SOUND FIELD circuit is turned
off.
The CENTER MODE button is set to
3 CH LOGIC.
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 remote commander is
not the same as the receiver.
Press SOUND FIELD ON/OFF to ON.
Set it to WIDE, PHANTOM or
NORMAL according to your speaker
system.
Press SOUND FIELD ON/OFF to ON.
Replace the batteries with new ones.
Point the commander head toward the
receiver.
Press the desired FUNCTION button
on the remote commander again.
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