4x4 HDMI 2.0 Matrix with Audio Matrix/ Downscaling/ AOC Supported
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10. Troubleshooting and Maintenance
Problems
Potential Causes
Solutions
Color losing or no
video signal output
The connecting cables may
not be connected correctly or
it may be broken.
Check whether the cables
are connected correctly and
in working condition.
Fail or loose connection.
Make sure the connection is
good
No output image
when switching
No signal at the input / output
end.
Check with oscilloscope or
multimeter if there is any
signal at the input/ output
end.
Fail or loose connection.
Make sure the connection is
good.
Input source is with HDCP
while the HDCP compliance
is switched off.
Send command /%[Y]/[X]:1.
or change HDCP
compliance status in GUI.
The display doesn’t support
the input resolution.
Switch for another input
source or enable the
display to learn the EDID
data of the input.
Cannot control the
device via front
panel buttons
Front panel buttons are
locked.
Send command /%Unlock;
or select unlock in GUI
interface to unlock.
Cannot control the
device via IR remote
The battery has run off.
Change for new battery.
The IR remote is broken.
Send it to authorized dealer
for repairing.
Beyond the effective range of
the IR signal or not pointing at
the IR receiver.
Adjust the distance and
angle and point right at the
IR receiver.
The IR receiver connected to
IR IN port is not with carrier.
Change for an IR receiver
with carrier.
Power Indicator
remains off when
powered on
Fail or loose power
connection.
Check whether the cables
are connected correctly.
