9. Troubleshooting
Use Cases
and sections.
Symptom Root cause Action
Refer to
Video signal
No picture on the
video output
Device or devices are
not powered properly
Check the matrix and the other devices if
they are properly powered; try to unplug and
reconnect them.
3.3
Cable connection
problem
connectors (video and TPS cables).
3.2
No incoming signal
light, no signal is present. Check the source
2.4
TPS mode problem Check the actual TPS mode and the selected
modes of the devices.
7.6.22
Not the proper video
port is the active one
Check the video crosspoint settings.
2.4
6.4.6
7.6.4
The output is muted Check the mute state of output port.
6.4.2
7.6.3
Display is not able
to receive the video
format
Check the emulated EDID; select another
(e.g. emulate the EDID of the display on the
input port).
LW3
Symptom Root cause Action
Refer to
HDCP is disabled Enable HDCP on the input and output port.
7.6.18
7.6.19
Not the desired
picture displayed
on the video
output
test pattern (no sync
screen) statically
Check Test Pattern settings in the HDMI
output properties.
7.6.20
test pattern (no sync
screen) as there is no
picture on video source
Check video settings of the source.
7.6.20
Audio signal
No audio is
present on output
Source audio volume is
low or muted
Check the audio settings of the source.
Not the proper audio
port is the active one
Check the audio crosspoint settings.
LW2
6.4.6
7.8.1
7.8.2
Input port is muted Check the input port properties.
7.7.1
Output port is muted Check the output port properties.
6.4.3
7.6.3
Analog audio volume is
set low
Check the Analog audio output port settings
(volume).
7.8.8
HDMI output
signal contains no
audio
HDMI mode was set
Check the properties of the output port and
set to HDMI or Auto.
7.6.21
Check the EDID and select an HDMI EDID to
emulate.
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