Troubleshooting - Lightware HDMI20-OPTC-TX220-Pro User Manual

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8. Troubleshooting

8
T roubleshooting
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.
LW3 Link to LW3 protocol commands section
HDMI20-OPTC series – User's Manual
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
Device(s) not powered
properly.
Cable connection
problem.
Cable quality problem.
Endface surface of the
fiber optical cable
No picture on the
became contaminated.
video output
Display is not capable of
receiving the sent video
format.
Source power and
configuration problems.
Video signal type was
set to DVI.
HDMI output
signal contains no
audio
DVI EDID is emulated.
Front View and Rear View sections.
Root cause Action
Video signal
Check the extenders and the other devices
if they are properly powered; try to unplug
and reconnect them.
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 input port
is selected.
Due to the high data rates, high quality
cables must be used. It is recommended
to use OM3 or OM4 cables.
Use special fiber optical cable cleaning
equipment to clean it carefully.
Try emulating your display device's EDID
to the source.
Check whether your source is powered on
and configured properly. The HDMI output
can be turned off on most DVD players. If
the source is a computer, then verify that
the VGA output is selected and active.
Try restarting your computer; if you get
a picture during the booting process, you
have to review the driver settings.
Check the signal type properties of the
output port and set to HDMI or Auto.
Check the EDID and select and HDMI EDID
to emulate.
61
Refer to
3.3
3.3
10.4
4.3.3
5.5
LW3 6.10.4
5.4.2
5.4.3
5.4.5
4.3.3
5.5
LW3 6.10.1