Sony HT-DDW8500 Operating Instructions Manual page 80

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
3 meters away from a TV set or
fluorescent light.
• Move your audio components away from
the TV.
• 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 58).
• Adjust the speaker level (page 37).
There is no sound from the surround
back speaker.
• Some discs have no Dolby Digital
Surround EX flag even though the
packages have Dolby Digital Surround EX
logos. In this case, select "SB ON" (page
44).
There is no sound from the subwoofer.
• Check that the speaker cords and monaural
audio cord (supplied) are connected
correctly and securely (page 18).
• Check that the system control cable
(supplied) is fully inserted into the
SYSTEM CONTROL jack (page 18).
• Check that the SUBWOOFER VOLUME
on the power amplifier is not set to MIN.
80
GB
The surround effect cannot be
obtained.
• Make sure the sound field function is on
(press MOVIE, or MUSIC).
• 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,
check the audio setting (the settings for the
audio output) of the connected component.
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.