Pentax Optio T20 - Manual (Page 127)

Changing the Sound Settings
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Setti
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You can adjust the volume of operation and playback sounds and change
the type of start-up sound, shutter sound, operation sound, and self-timer
sound. You can also turn off the sounds.
1
Press the 3 button.
The [Menu] appears.
2
Touch [Sound].
The Sound screen appears.
Changing the Volume
1
Touch [Operation Volume] on the
Sound screen.
The Operation Volume screen appears.
2
Touch the icon of the operation volume you want to set.
Choose from six volume levels f (0) to g (5). Set the volume to f (0)
to mute the sound.
3
Touch [OK].
The setting is saved and the screen returns to the Sound screen.
Changing the Sound Settings
Sound
Operatin
Sound
Shutter
Sound
Selftime
Sound
Playback
Volume
Operatin
Volume
Start-up
Sound
1 1
1 1 1 1 1 1
Operation Volume
OK