User's Manual

45
Failure
Possible cause
Solution
Strong light or infrared
interference
Remove the interference source or change
the using environment.
Wrong writing method
Use the pen rather than a finger to write.
Grasp the pen as far to the nib as possible.
The angle between the pen and display
should be larger than 60 degrees. Do not let
sleeve or wrist touch the writing surface.
Not sound and image
1. Check if the power cable is connected to the power socket and if the panel
is connected to power.
2. Check if the rocker switch on the interactive panel is switched on.
3. Check if the Standby button on the panel is pressed.
4. Check if the video and audio input cables are connected correctly.
5. Check if the panel is switched to the right signal source.
6. Check settings including image luminance and contrast.
7. Check the volume.
Image is normal, but no
sound
1. Check the volume.
2. Check if the Mute button on the remote controller is pressed.
3. Check if the audio cable between the PC and interactive panel is connected
correctly.
No image or the image is
black and white
1. Adjust color settings.
2. Check the color system.
Image or sound is
interrupted
1. Find out the electric appliance that causes the interference and move it
away from the interactive panel.
2. Do not connect the panel to a power socket that a disrupting electric
appliance is connected to.
The remote controller fails.
1. Change the batteries.
2. Clean the launch window at the top of the remote controller. (Check if it is
blocked)
3. Check contacts of the batteries.
Computer cannot be started
(applicable for models with
computers)
1. Check if the computer adapter is correctly connected and is connected to
power.
2. Check if the computer is connected correctly to the interactive panel.
Self-inspection:
The following phenomena are not failures:
 Given the high-precision production technology, the LCD panel may have a very few constantly bright
or dark pixels, which turn out to be tiny red, blue, green or dark points on the panel. The phenomenon is
normal.
 The panel may make slight sound when it is adjusting backlight or it is cooling.
 When the image and sound are normal, and you touch the LCD panel with fingers, you may feel static
electricity. The temperature of the rear of the panel and product is high. These are normal phenomena.