8. Troubleshooting
DVI-OPT-220-Pro series – User's Manual
31
Troubleshooting
Usually, if the system seems not to transport the signal as expected, the best
strategy for troubleshooting is to check signal integrity through the whole
signal chain starting from source side and moving forward to receiver end.
Link to connections/cabling section.
Link to front panel operation section.
Link to LDC software section.
LW2
Link to LW2 protocol commands section
At first, check front panel LEDs and take the necessary steps according to their states. For more information
about status, LEDs refer to the
Symptom
Root cause
Action
Refer to
Video signal
No picture
on the video
output
Device(s) not
powered
properly.
Check the extenders and the other devices if they are
properly powered; try to unplug and reconnect them.
Cable connection
problem.
Due to the high data rates cables must fit very well,
check all the connectors. If your source or display has
more connectors then make sure that the proper port
is selected.
Cable quality
problem.
Due to the high data rates, high quality cables must
be used. It is recommended to use OM3 or OM4 fiber
cables.
Endface surface
of the fiber optical
cable became
contaminated.
Use special fiber optical cable cleaning equipment to
clean it carefully.
Display is not
capable of receiving
the sent video
format.
Try emulating your display device’s EDID to the source.
LW2
Source power and
configuration
problems.
Check the Source Connected LED on the front side of
the transmitter. This LED indicates the presence of the
+5V signal coming from the DVI source, which means
the DVI source device is powered on and the cable link
is well connected. If it is not illuminated, then your DVI
source is either powered off or not working properly.
The HDMI output can be turned off on most DVD
players. Please refer to the user’s manual of your DVI
source. The other option is that the cable is damaged,
test the system it with another one.
If the source is a computer, then verify that the DVI
output is selected and active. Try restarting your
computer; if you only get a picture during the booting
process, you have to review the driver settings.
