Troubleshooting
70
Problem Solution
Touch function invalid
Check whether touch driver is installed and started.
Check whether the size of article touched is comparable
with finger.
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.
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