Sony Universal Remote - Manual (Page 13)

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Remote and TV Controls
16 (Previous channel)
Press to return to the channel that was last
viewed (for more than five seconds).
17 (Mute)
Press to mute the sound. Press again to restore
the sound.
• In standby mode, if you want to turn on the TV
without sound, press this button.
18 +/– (Volume)
Press to adjust the volume.
19 (Text)
Press to display text information (28).
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