AVG-UHMS88
7. Troubleshooting & Maintenance
Problems
Causes
Solutions
Color loss or no video signal output
The connection of the cabling may
be incorrect or faulty.
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.
Failed 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
Flat Battery
Replace Battery
The IR remote is faulty
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/
IR ALL IN port is not with carrier
Change for an IR receiver with
carrier.
Power Indicator remains off when
powered on
Failed or loose power connection
Check whether the cables are
connected correctly
EDID management does not work
normally
The HDMI cable is broken at the
output end.
Change for another HDMI cable
which is in good working condition.
There is a blank screen on the
display when switching
The display does not support the
resolution of the video source.
Switch again.
Manage the EDID data manually to
make the resolution of the video
source automatically compliant with
the output resolution.
Cannot control the device by
control device (e.g. a PC) through
RS232 port
Wrong connection
Check to ensure the connection
between the control device and the
unit
Wrong RS232 communication
parameters
Type in correct RS232
communication parameters: Baud
rate:600
;
Data bit: 8
;
Stop bit: 1
;
Parity bit: none
Broken RS232 port
Send it to authorized dealer for
checking.
Static becomes stronger when
connecting the video connectors
Bad grounding
Check the grounding and make
sure it is connected well.
Cannot control the device by
RS232 / IR remote / front panel
The device has a previous fault
Send it to authorized dealer for
repairing.
