Sony STR-DG920 - Manual (Page 110)

110 US
There is severe hum or noise.
• Check that the speakers and components
are connected securely.
• Check that the connecting cords are away
from a transformer or motor, and at least
10 feet (3 metres) away from a TV set or
fluorescent light.
• Move your audio components away from
the TV.
• Make sure you have grounded the U
SIGNAL GND terminal (only when a
turntable is connected).
• The plugs and jacks are dirty. Wipe them
with a cloth slightly moistened with
alcohol.
There is no sound, or only a very low-
level sound is heard from the center/
surround/surround back speakers.
• Select a Cinema Studio EX mode (page
54).
• Adjust the speaker level (page 59).
There is no sound from the subwoofer.
• Check that the subwoofer is connected
correctly and securely.
• Make sure you have turned on your
subwoofer.
• Depending on the selected sound field, no
sound output from the subwoofer.
• When all speakers are set to “LARGE”
and “Neo:6 Cinema” or “Neo:6 Music” is
selected, there is no sound from the
subwoofer.
The surround effect cannot be
obtained.
• Make sure the sound field function is on
(press MOVIE).
• Sound fields do not function for signals
with a sampling frequency of more than
48 kHz.
Dolby Digital or DTS multi channel
sound is not reproduced.
• Check that the DVD, etc. you are playing
is recorded in Dolby Digital or DTS
format.
• When connecting the DVD player, etc., to
the digital input jacks of this receiver,
make sure the setting for the digital audio
output of the connected component is
available.
Recording cannot be carried out.
• Check that the components are connected
correctly.
• Select the source component using the
input buttons (page 44).
The MULTI CHANNEL DECODING lamp
does not light up in blue.
• Check that the playback component is
connected to a digital jack and the input is
selected properly on this receiver.
• Check whether the input source of the
software being played back corresponds to
the multi channel format.
• Check whether the setup on the playback
component is set to multi channel sound.
• Check to make sure the selected digital
audio input jack is not assigned to other
inputs in “Input Assign” in the Input menu
(page 82).
There is no sound from the component
connected to the DIGITAL MEDIA PORT
adapter.
• Adjust the volume of this receiver.
• The DIGITAL MEDIA PORT adapter
and/or component is not connected
correctly. Turn off the receiver, then
reconnect the DIGITAL MEDIA PORT
adapter and/or component.
• Check the DIGITAL MEDIA PORT
adapter and/or component device to make
sure it supports this receiver.