Epson PowerLite 7550C User Manual page 161

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6 • Troubleshooting
The colors of the image are not right.
The color balance may be incorrect. If you're displaying a computer
image, use the Color option in the Video menu to adjust the balance
of red, green, and blue. If you're displaying video, adjust the Color
and Tint (NTSC only) settings on the Video menu.
Check your monitor's color balance if you're displaying a computer
image.
There is no sound.
Make sure the volume setting isn't turned all the way down and that
the audio cable is securely attached to both the projector and the
audio source. Also, make sure that the Mute button is not enabled.
The wrong source may be selected. Press the Source button on the
remote control or control panel to select the proper source.