Led Display Video Controller VX4 Series User's Manual
www.novastar-led.com
25
Refresh：Refresh the display to show the version information of hardware so as to confirm whether the
hardware program has been correctly updated.
11 Frequently asked questions and
considerations
Inspect whether the power connection is correct and the switch has
been turned on;
Play the Self test image and confirm whether the connection of LED is
correct and works normally;
Inspect whether VX4 output has signal and shows blank screen;
Inspect whether the mode and parameter of screen configuration are
correct;
Monitoring port output is
abnormal
Check whether there is image input in input channel and whether it is
correctly displayed;
Check whether PIP has been turned on, whether there is signal input in
2 channel and whether it is correctly displayed;
Check whether monitoring output is connected correctly and it is not
loose;
Please confirm whether Monitor supports the output resolution of VX4;
Try to cut off the power of equipment and restart it, reset VX4 and
operate again;
Phase of VGA input
offset
Check whether there is signal input in 2 channel and it is normally
displayed;
Check PIP and confirm whether parameter setting is normal;
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