Viewsonic PJD8333s 사용자 설명서

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• To make the microphone input available when the projector is in standby mode, turn 
on the Video/Audio > Audio Setting >
 
Active Audio Out menu.
• If the microphone is not working, check the volume setting and cable connection.
• You might get feedback noise from the microphone when you are too close to the 
speaker of the projector. Move the microphone away from the speaker of the 
projector. The greater volume you require, the greater distance you need to be 
away from the Speaker to prevent the noise.