AVG-PSU12-UL
8. Troubleshooting & Maintenance
Problems
Causes
Solutions
No output voltage
Power supply protect function
will start when over loaded.
Please reduce loads.
After selecting output voltage,
the output channel will switch
off automatically.
Switch on the output channel via front
panel button.
Fail or loose connection
Make sure the connection is good.
AC1
or
AC2
indicator doesn’t
work or respond
to any operation
Failed connection of the
power cord.
Make sure the power cord connection is
good.
Cannot control
the device by
control device
(e.g. a PC)
through RS232
port
Wrong RS232
communication parameters
Type in correct RS232 communication
parameters.
Fail or loose connection
Make sure the connection is good.
Broken RS232 port
Send it to authorised dealer for checking.
CMD ERR
Extra characters like line feed or carriage
return have been added to the
command, remove them.
Cannot control
the device by
front panel
buttons while can
control it through
RS232 port
The front panel buttons are
broken
Send it to authorised dealer for repair.
Cannot control
the device via
GUI
The IP address of control PC
and TCP/IP port are not on
the same network segment
Modify control
PC’s network segment to
the same with the TCP/IP port.
The port No. are wrong.
The correct port No. is 4001.
Fail or loose connection
Make sure the connection is good.
Broken TCP/IP port
Send it to authorized dealer for checking.
