Speechi ST-55-UHD-AND-L-004, Руководство пользователя, Страница: 16 / 18

Simple Troubleshooting
14
Simple Troubleshooting
Machine Fails to Work Normally
Remote control failure Check whether there are other objects between remote control and
equipment 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
shut down
Whether set sleep or not.
Check whether there is sudden power outage.
The system will automatically shut down if the interactive intelligent Panel's
external channel loses signal for 5 minutes. Please check the input and
connection of the signal.
PC Mode
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
Touch function invalid Check whether the size of article touched is comparable with finger.
Touch positioning not
correct
Check whether touch pen is facing the screen.
Video Function Can't Work Normally
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.
Check whether signal wire is well connected.