AVG-CS4K-88-V2
8. Troubleshooting & Maintenance
Problems
Potential Causes
Solutions
Colour loss or no video
signal output
The connected cables may
not be connected correctly
or faulty
Check whether the cables are
connected correctly and in working
condition
Failed or loose connection
Make sure the connection is secure
No output image when
switching
No signal at input or output
Check with oscilloscope or multimeter
if there is any signal at the
input/output
Failed or loose connection
Make sure the connection is secure
Input source contains
HDCP while the HDCP
compliance is switched off
Send command /%[Y]/[X]:1. or
change the HDCP compliance status
in the GUI
The display doesn’t support
the input resolution
Switch to another input source or
enable the display to learn the EDID
data of the input
Cannot control the device
via the front panel buttons
Front panel buttons are
locked
Send command /%Unlock, or select
unlock in the GUI interface to unlock
Cannot control the device
via the IR remote
The battery has depleted
Replace battery
The IR remote is faulty
Send it to an authorized dealer for
repair
Unit is beyond the effective
range of the IR signal or not
pointing directly at the IR
receiver
Adjust the distance and angle and
point at the IR receiver
The IR receiver connected
to IR IN port does not
contain IR carrier
Change to an IR receiver with carrier
Power Indicator remains
off when powered on
Failed or loose power
connection
Check whether the cables are
connected securely
EDID management does
not work normally
The HDMI cable is broken
at the output end
Change to 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
Manage the EDID data manually to
make the resolution of the video
source identical to the output
resolution
Cannot control the unit
with the control device
(e.g. a PC) through the
RS232 port
Wrong connection
Check to ensure the connection
between the control device and the
unit
Wrong RS232
communication parameters
Enter the correct RS232
communication parameters: Baud
rate:9600, Data bit: 8, Stop bit: 1,
Parity bit: none
Faulty RS232 port
Send it to an authorized dealer for
repair
