Troubleshooting
72
Touch positioning not
correct
•
Check whether driver is properly installed and make
correction.
•
Check whether touch pen is facing the screen.
No picture and no sound
•
Check whether the machine is started state.
•
Check whether signal wire is well plugged, whether INPUT
is corresponding to it.
•
If in internal computer mode, check whether internal
computer is started.
With horizontal or vertical
stripes or image dithering
•
Check whether signal wire is well connected.
•
Check whether other electronic equipment or power tools
are placed around the machine.
No color, color is weak or
image is weak
•
Adjust chromaticity and brightness or contrast in menu.
•
Check whether signal wire is well connected.
With image but without
sound
•
Check whether mute button is pressed for mute.
•
Press
VOL+/VOL-
to adjust volume.
•
Check whether audio line is connected correctly.
Only one speaker has
sound
•
Adjust sound balance in menu.
•
Check whether computer sound control panel only sets up
one sound channel.
•
Check whether audio line is connected correctly.
VGA output without
sound
•
Check whether connect external device with headphone
cable.