Sony STR-DB900 用户手册
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If you experience any of the following
difficulties while using the receiver, use this
troubleshooting guide to help you remedy the
problem. Should any problem persist, consult
your nearest Sony dealer.
difficulties while using the receiver, use this
troubleshooting guide to help you remedy the
problem. Should any problem persist, consult
your nearest Sony dealer.
There is no sound no matter which component
is selected.
is selected.
• Check that both the receiver and all components
are turned on.
• Check that MASTER VOL +/– is not set to the
minimum value.
• Check that all speaker cords are connected
correctly (page 9).
• Press MUTING to cancel the muting function.
• When Decode Priority is set to “DEC. PCM”,
sound may not be output. In this case, set Decode
Priority to “DEC. AUTO”.
Priority to “DEC. AUTO”.
There is no sound from a specific component.
• Check that the component is connected correctly
• Check that the cord(s) used for connection is (are)
fully inserted into the jacks on both the receiver
and the component.
and the component.
There is no sound from one of the front
speakers.
speakers.
• Connect a pair of headphones to the PHONES
jack to verify that sound is output from the
headphones. 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.
headphones. 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.
The multichannel surround effects of Dolby
Digital or DTS are not obvious.
Digital or DTS are not obvious.
• Check that the DVD software, etc. is recorded in
Dolby Digital or DTS.
• If you connect the DVD player, etc. to the digital
input jack on this system, check the audio setting
(for digital audio output) of the component.
(for digital audio output) of the component.
• Check that the audio track is correctly selected on
the DVD player. (Check the audio setting of the
DVD menu.)
DVD menu.)
There is no sound or only a very low-level
sound is heard.
sound is heard.
• Check that the speakers and components are
connected securely (page 9).
• Check that you have selected the correct
component on the receiver (page 17).
• Check that the headphones are not connected.
• Press MUTING to cancel the muting function.
• The protection circuitry has been activated. Turn
off the receiver, eliminate the short-circuit
problem and turn on the power again after about
20 seconds.
problem and turn on the power again after about
20 seconds.
There is no sound from analog 2 channel
sources.
sources.
• Check that INPUT MODE is not set to “COAX
IN” nor “OPT IN” (page 28).
There is no sound from digital sources from
the COAX IN or OPT IN jack.
the COAX IN or OPT IN jack.
• Check that INPUT MODE is not set to
“ANALOG” (page 28). Check that INPUT
MODE is not set to “COAX IN” for sources from
the OPT IN jack, nor set to “OPT IN” for sources
from the COAX IN jack.
MODE is not set to “COAX IN” for sources from
the OPT IN jack, nor set to “OPT IN” for sources
from the COAX IN jack.
Sound from the left and right speakers is
unbalanced or reversed.
unbalanced or reversed.
• Check that the speakers and components are
connected correctly and securely (page 9).
• Adjust the balance parameters in the LEVEL
menu (page 26).
There is a severe humming or noise.
• Check that the speakers and components are
connected securely (page 9).
• 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.
from a TV set or fluorescent light.
• The plugs and jacks are dirty. Wipe them with a
cloth slightly moistened with alcohol.
There is no sound from the center speaker.
• Make sure the sound field function is on. Press
A.F.D. or MODE on the remote, or SOUND
FIELD on the receiver (page 23).
FIELD on the receiver (page 23).
• Select the CINEMA STUDIO EX mode
• Adjust the speaker level (page 15).
• Make sure the center speaker is set to either
“SMALL” or “LARGE” (page 13).
There is no sound from the surround back
speaker.
speaker.
• Some discs have no Dolby Digital EX flag even
though their packaging features a Dolby Digital
EX logo. In this case, select “SB DECODING
MTRX” in the SET UP menu (page 30).
EX logo. In this case, select “SB DECODING
MTRX” in the SET UP menu (page 30).
Troubleshooting
continued