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ViewSonic CD4200 19
ENGLISH
Adjusting the Volume
By pressing VOL + / – buttons either on this remote control or
this LCD, a user can adjust the sound output of external
devices which are connected to Audio Out sockets of this LCD.
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Press the VOL + / – buttons to increase or decrease the
volume.
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At any time, you can turn off the sound using the Mute button.
1. Press the Mute button and the sound turns off.
2. Press Mute again or VOL + / – buttons to return audio back
to the previous volume level.