is switched “on”.
EDID management does
not work normally.
The HDMI cable is
damaged at the output
end.
Replace the HDMI cable
with a known good cable.
The display is showing a
blank screen when
switching.
The display does not
support the resolution of
the video source.
Try switching again.
Manage the EDID data
manually to ensure that the
resolution of the video
source is compatible with
the output resolution.
Cannot control the Matrix
Switch via RS232 (e.g. a
PC.s RS232 port).
Wrong cable connection.
Check the RS232 cable
connectivity and pinout
between the controlling
device and the Matrix
Switch.
Wrong RS232
communication
parameters.
Ensure that the RS232
communication parameters
are set to: Baud rate:9600;
Data bit: 8; Stop bit: 1;
Parity bit: none
Damaged RS232 port.
Send it to an authorized
dealer for validation and
repair.
Static becomes stronger
when connecting the video
connectors.
Bad grounding.
Check the grounding, and
ensure that it is well
connected.
Cannot control the device
by RS232 / IR remote /
front panel buttons
The device is damaged.
Send unit to an authorized
dealer for repair.
If you still cannot diagnose the problem, please call MuxLab Customer Technical
Support at 877-689-5228 (toll-free in North America) or at (+1) 514-905-0588
(International).
