9. Troubleshooting
MODEX-F15-OPTS, MODEX-F15-OPTM series – User's Manual
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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.
At first, check front panel LEDs and take the necessary steps according to their states. For more information
about front and rear panel LEDs of the matrix refer to
and
section.
Pictogram Legend
Section to connections/cabling.
Section to front panel operation.
Section to LDC software.
LW2
Section to LW2 protocol commands.
LW3
Section to LW3 protocol commands.
9.1.
Use Case Studies
Symptom
Root cause
Action
Refer to
Video & Audio modules
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
Cables must fit very well, check all the
connectors.
Optical cable
became
contaminated
Use special fiber optical cable cleaning
equipment to clean it carefully.
No incoming
signal (transmitter)
If the Video LED does not light on the front panel,
no video signal is present on the DVI-D/HDMI/DP
input port. Check the source device and the DVI/
HDMI/DP cable(s).
No incoming
signal (receiver)
If the Video LED does not light, no signal is present
on the optical input port. Check the source device
and the fiber cable.
Not the proper
video port is the
active one
Check the properties of the Video module.
LW3
Not the proper
interface is the
active one
If the source/display has more connectors,
check if the proper interface is selected.
Output port is
muted
Check the mute state of output port of TX and
RX.
LW3
Display is not able
to receive the
video format
Check the emulated EDID and select another
(e.g. emulate the display’s EDID on the input
port).
LW3
HDCP is disabled
Enable HDCP on transmitter's input port or the
receiver's output port.
LW3
