4K 4x4 HDMI Matrix Switcher
26
6. Panel Drawing
7. Troubleshooting & Maintenance
Problems
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 /%[x]:[1].
to
change
HDCP
compliance status.
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.
No output on the amplifiers
connected to audio output
ports
The amplifiers are not able
to decode HDMI audio
Change for amplifiers that
are capable to decode
HDMI audio.
Cannot control the device
via front panel buttons
Front panel buttons are
locked.
Send command /%Unlock;
to unlock
Cannot control the device
The battery has run off.
Change for new battery.
SYSTEM MONITOR
OUTPUTS
POWER
1
2
3
4
1 2 3 4
ON
DIP
FIRMWARE
DC 12V
TCP/IP
EDID
IR IN
On
Off
1 2 3 4
1
0
R S232
Tx
Rx
SPDIF
4
3
2
1
1
2
3
4
SPDIF
SPDIF
SPDIF
INPUTS
OUTPUTS
CONTROL
MP-HD-44A-N
436 mm
4
4
m
m
