Compact Scaler Switcher (with PoH)
38
7. Troubleshooting & Maintenance
Problems
Causes
Solutions
Output
image
with
snowflake
Bad
quality
of
the
connecting cable
Try another high quality
cable.
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
The switcher is broken
Send
it
to
authorized
dealer for repairing.
POWER
indicator doesn’t
work or no respond to any
operation
Fail connection of power
cord.
Make sure the power cord
connection is good.
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.
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 control device (e.g. a
PC) through RS232 port
Wrong
RS232
communication parameters
Type in correct RS232
communication
parameters.
Broken RS232 port
Send
it
to
authorized
dealer for checking.
Cannot control the device
by front panel buttons while
can control it through
RS232 port
The front panel buttons are
locked
Send command
50605%
to
unlock the front panel
buttons.
