Sony CCD-TRV118 Service Manual page 348

About video cassette
Display during automatic detection of system
The Digital8 system or Hi8 /standard 8 mm system is automatically detected,
and the playback system is automatically switched to. During switching of systems, the
screen turns blue, and the following displays appear on the screen. A hissing noise also
sometimes can be heard.
t / : During switching from Digital8 to Hi8 /standard 8 mm
/ t : During switching from Hi8 /standard 8 mm to Digital8
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