70
Symptom
Troubleshooting Methods
The system is automatically powered
on/off when no operation is performed.
Disable the automatic power-on/off function.
For details, see section "Power ON/OFF
Setting".
Check whether the screen entered shut down
mode due to no operation for an extended
period of time.
Check whether the input power supply is
stable.
The colors of images are abnormal.
Check whether the HDMI cable is properly
connected or has any quality issue.
The touch function is abnormal or the
positioning is inaccurate.
Restart the screen.
In the Windows system, perform positioning
again. For details, see section "Positioning".
The touch function is unavailable
when the external signal source
channel is being used.
Switch between different external signal
sources.
Ensure that the USB touch cable is connected
to the proper port. For details, see section
"Ports".
Remove and insert the USB touch cable again.
There is no sound when the HDMI in
channel is used.
Remove and insert the HDMI cable again.
No image is displayed when the
HDMI out channel is used.
Generally, this issue is caused by the
compatibility of the external display product.
Replace the external display product and test
again.
The HDMI cable is too long or has a poor
quality. Replace the HDMI cable delivered with
the product.
The touch function on the front panel
is ineffective.
Touch the button using the fingertip completely.
Check whether the finger is wet or has other
liquids on it.
Restart the screen.
The USB flash memory cannot be
identified.
Check whether the USB flash memory is
inserted into the correct USB port. For details,
see section "Ports."