BenQ CS6501 User Manual page 90

90 Troubleshooting
No color, color is weak
or image is weak
With image but without
sound
Only one speaker has
sound
VGA output without
sound
• Adjust chromaticity and brightness or contrast in menu.
• Check whether signal wire is well connected.
• Check whether mute button is pressed for mute.
• Press VOL+/VOL- to adjust volume.
• Check whether audio line is connected correctly.
• Adjust sound balance in menu.
• Check whether computer sound control panel only sets
up one sound channel.
• Check whether audio line is connected correctly.
Check whether connect external device with headphone
cable.