Troubleshooting & Maintenance
Problems
Causes
Solutions
Power LED doesn’t
work/ No response
No output image on display
when switching
Failed connection of power
cord
Faulty Power adapter
Loss of connection
Replace power adapter
Make sure the power cord is
connected properly
Make sure all cables are
connected properly
Cannot control the device
through RS232 port
Wrong RS232
communication parameters
Broken RS232 port
Type in correct RS232
communication parameters
Replace/repair RS232 Port
Cannot control the device
Bad Batteries
Broken IR Remote
Replace batteries
Send the remote in for
replacement
Beyond the effective range
of the IR signal or not
pointing at the IR receiver
Adjust the distance and angle
and point directly at the IR
receiver.
Output image with
snowflake or ghost
Bad cable
Cable length exceeding 15
meters
Replace with new, properly
spec’d cable
Replace with shorter cable
Cannot control the device
via front panel buttons
Front panel buttons are
locked
Send command 50605% to
unlock it
Cannot select source via
SOURCE/AUTO buttons
Device in auto-switching
mode
Press and hold auto switching
button for 3 seconds to exit
auto switching mode
