Sony XTL-W70 - Manual (Page 14)

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Press (V OFF) for two seconds.
You only hear the sound of the selected programme.
To cancel the visual off function, press (V OFF) again. If you
turn the unit off or turn the ignition switch to the OFF position,
the visual off function will be cancelled.
The visual off function is also canceled when you select another
TV programme with the programme number buttons (TV only).
When the visual off function is canceled, the screen mode
returns to “Full screen.”
Listening to the TV/video Sound
with the Picture Off
(Visual off function)
TV/VIDEO
V OFF A MEMORY
SEL VOL SEEK
2SEC
NAVI
DSPL
ITALY
1
4
7
10
2
5
8
11
3
6
9
12
V (visual) OFF button