10. Troubleshooting
MX2-8x8-HDMI20 series – User's Manual
63
Symptom
Root cause
Action
Refer to
Audio signal
No audio is present on
output
Other audio port is
switched to the output
Check the audio crosspoint
settings.
LW2
LW3
Output port is muted
Check the output port
properties.
LW2
LW3
Analog audio input: volume
is set very low
Check the Analog audio input
port settings (Volume).
LW3
Analog audio output:
volume is set very low
Check the Analog audio output
port settings (Volume).
LW3
HDMI output signal
contains no audio
HDMI mode was set to DVI
Check the properties of the
output port and set to HDMI or
Auto.
LW3
DVI EDID is emulated
Check the EDID and select an
HDMI EDID to emulate.
4.3.4
6.6
LW3
Symptom
Root cause
Action
Refer to
RS-232 signal
Connected serial device
cannot be controlled
Cable connection problem
Check the connectors to fit well;
check the wiring of the plugs.
Serial settings are different Check the port settings of the
matrix and the connected serial
device(s). Pay attention to link
and/or local ports.
LW3
Ethernet
No LAN connection can
be established
Incorrect IP address is set
(direct connect)
Disable DHCP server and set the
IP addresses to be in the same
subnet.
LW3
Restore the factory default
settings (with fix IP).
LW3
IP address conflict
Change the IP address to a not
reserved one or enable DHCP
if DHCP server exists in the
network.
LW3