Use Case Studies - Lightware MMX8x4-HT420M User Manual

   
10. Troubleshooting
10.1. Use Case Studies
Symptom Root cause
Device(s) not powered
properly
Cable connection problem Cables must fit very well, check all the
No incoming signal
Not the proper video port
is the active one
Not the proper interface is
the active one
No picture on the
video output
Output port is muted
Display is not able to
receive the video format
HDCP is disabled
Action Refer to
Video signal
Check the matrix and the other devices if
they are properly powered; try to unplug
and reconnect them.
connectors.
No video signal is present on the HDMI
input ports. Check the source device and
the HDMI cables.
Check the video crosspoint settings.
LW2
LW3
If the source/display has more
connectors, check if the proper interface
is selected.
Check the mute state of the ports.
LW2
LW3
Check the emulated EDID and select
another (e.g. emulate the display's EDID
on the input port).
LW3
Enable HDCP on input port(s) of the
matrix.
LW3
Applied firmware package: v1.3.0 | LDC software: v2.4.2
MMX8x4-HT series – User's Manual
Symptom
4.4
Image is
magenta
colored
5.1
4.2.1
3.2.5
3.3.3
6.4
7.4.7
No microphone
8.6.1
sound is present
on output
3.2.2
6.4.1
7.4.4
6.5.3
Not the
8.7.13
corresponding
audio sounds
3.2.3
6.10
8.8
3.2.2
6.5.1
8.7.9
Root cause Action
Video signal
Wrong colorspace The sink expects RGB color spaced
was set signal, but receives YCbCr. Check if the
proper signal type was set on the port
properties window of the outputs (DVI
/ HDMI / Auto) or check the emulated
EDIDs and select another one or check
the colorspace settings on the sink
device.
Audio signal
Mic input is muted/ signal Check the mic channel properties.
level/ gain/ volume is too
low.
Microphone type is The condenser microphone needs
condenser. 48V via the microphone cable which is
necessary for normal operation. Turn on
the phantom power.
Application of the phantom power can
cause a damage if dynamic or wireless
microphone is connected!
Wrong wiring of the Check the wiring of the microphone
microphone. cable.
The microphone item is Turn on the microphone.
turned off.
Wrong video channel is Check the video crosspoint settings.
set on the crosspoint
172
Refer to
6.5.1
LW3
8.7.20
LW3 8.11.1
LW3 8.10.1.8
12.14
3.2.5
3.3.3
6.4
LW2 7.4.7
LW3 8.6.1