Garmin 74C Manual De Usuario

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Try turning up the volume in the Audio menu (see page 51). 

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Make sure the 

A/V Mute

 function is not on.

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If you’re using a VCR or other video source, make sure its volume 
is not turned all the way down or muted. Also, make sure the 
cables are connected correctly, as described in Chapter 1.

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Make sure the audio cable is connected to the correct Audio port. 
See page 20 or page 23. 

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If your presentation includes computer audio, make sure the 
volume control on your computer is not turned all the way down 
or muted. Make sure the audio cable is securely connected to both 
the projector and your computer’s 

 headphone jack or

 audio out jack. See page 20.

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Make sure the Windows volume controls on your computer are 
not turned all the way down or set to Mute. Check this by 
clicking the volume control in your Windows System Tray (lower 
right corner of the screen). 

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The wrong source may be selected. Press the 

Source 

button on 

the projector—or the 

Computer1/2

 or 

S-Video/Video

 button 

on the remote control—to select the correct source.

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Check the 

Audio Input

 setting in the Audio menu.