RT-20 Universal Disc Player Troubleshooting & Maintenance
5-5
6. Clean the loaded disc.
7. Clean the RT-20 audio output connectors, the associated com-
ponent audio input connectors, and the audio cable plugs to
ensure that the connectors and plugs are not dirty or oxidized.
The RT-20 is powered on, but there is no digital audio.
1. If the “D OFF” indicator appears on the front panel display, set
the Digital Out parameter to On to reactivate the digital audio
output connectors.
2. Make sure the loaded disc generates digital audio output sig-
nals. Some discs, such as DVD-As and SACDs, only generate
analog audio output signals.
3. If the loaded disc does not allow audio downmixing, set the
Audio Out parameter to 5.1 Channel. Discs such as DVD-As
that do not allow audio downmixing will mute the digital audio
output connectors when the Audio Out parameter is set to
2 Channel.
See “Audio Out” on page 3-8 for more information.
4. Make sure the Dolby Digital, DTS, Linear PCM, and MPEG
parameter settings are compatible with the associated compo-
nent. For instance, the Dolby Digital Out parameter should be
set to bitstream if the associated component is compatible with
Dolby Digital sources and to PCM if the associated component
is not compatible with Dolby Digital sources.
The RT-20 is powered on, but there is no stereo audio.
1. Set the AUDIO SETUP 1 menu Audio Out parameter to 2 Chan-
nel. When this parameter is set to 5.1 Channel, the RT-20
passes multi-channel audio output to the associated compo-
nent.
2. Make sure the loaded disc allows audio downmixing. Discs
such as DVD-As that do not allow audio downmixing always
output multi-channel audio, even when the Audio Out parame-
ter is set to 2 Channel.
3. Make sure an audio track recorded in stereo format is selected
on the loaded disc. The remote control AUDIO button or the
disc menu can be used to select the desired audio track (audio
language and output format).
The RT-20 is powered on, but there is no multi-channel audio.
1. Set the AUDIO SETUP 1 menu Audio Out parameter to 5.1
Channel. When this parameter is set to 2 Channel, the RT-20
passes 2-channel audio output to the associated component.
Dolby Digital, DTS, and MPEG sources are downmixed to two
channels.
See “Audio Out” on page 3-8 for more information.
2. Make sure multi-channel audio is available on the loaded disc.
Multi-channel audio is only available for DVD-As and SACDs, as
well as other discs that include Dolby Digital, DTS, or MPEG
encoding. Other discs always output 2-channel audio, even
when the Audio Out parameter is set to 5.1 Channel.
3. Make sure an audio track recorded in multi-channel format is
selected on the loaded disc. The remote control AUDIO button
or the disc menu can be used to select the desired audio track
(audio language and output format).