Sony DVP-NS315 Marketing Operating Instructions Manual page 46

• "TVS NIGHT" only works with Dolby Digital
discs. However, not all discs will respond to the
"TVS NIGHT" function in the same way.
• If you use the DIGITAL OUT (OPTICAL or
COAXIAL) jack and set "DOLBY DIGITAL" to
"DOLBY DIGITAL" or "DTS" to "ON" in
"AUDIO SETUP," sound will come from your
speakers but it will not have the TVS effect.
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