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Problem Solution
Remote control failure
• Check whether there are other objects between remote
control and television remote control receiving window, thus
leading to failure of remote control.
• Check whether the battery electrode in the remote control is
correct.
• Check whether remote control needs to replace battery.
Machine automatically
shutdown.
• Whether set sleep or not.
• Check whether there is sudden power outage.
• Check whether there is no signal automatic shutdown.
Signal out of range
• Check whether display is set correctly.
• Check whether resolution is the best resolution.
• Adjust line and field synchronization in menu.
Background has vertical
lines or streaks.
• Select automatic correction in menu.
• Adjust clock and phase position in menu.
Image lack of color, color is
incorrect
• Check whether VGA is not well connected or has quality
problem.
• Adjust chromaticity and brightness or contrast in menu.
Display format that is not
supported.
• Select automatic correction in menu.
• Adjust clock and phase position in menu.
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.
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 the external device is connected with a
headphone cable.
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