14
Trouble shooting diagram:
Fault Indication:
Nothing in the display of the DMX144.
When turning on all the Groups, the light
in the diodes and display is dimmed down.
The lamps that is connected to the DMX
chain is flashing and seems unstable.
There is no response on the DMX unit(s)
connected to the DMX144.
Some Channels doesn’t fade.
When connecting the sound RCA input on
the DMX144 to a Sound Mixer system you
can hear hum in the PA System.
The lights doesn’t reach full power or there
is little or nothing respons of the sound,
pause and fade controller.
The Master fader doesn’t work in Program
or Chase Mode.
What to do:
Check if the power plug connected to the
mains ?
Try to take out the power input plug, wait
20 second, and connect it again.
Any power in the connection ?
Connect a lamp to the power outlet. If it
light up, change power supply.
If it doesn’t light up. Check fuse for the
power outlet circuit.
To small power supply.
Recommended input minimum is:
600mA 12V AC or DC. Polarity
unessential.
Always use good quality DMX cable with
a terminator at the last unit.
(120 Ohms resistor connected between Pin
2 and 3 in a XLR plug.)
Check the DMX channel selection on the
unit(s). Is it the same channel on the DMX
unit(s) than the one you are working on ?
Go to the Setup menu and turn on the
fading of the channels that doesn’t fade.
Disconnect the DMX Cable from the
DMX144. If the hum disappear some of
your light units has a ground failure or
connection. Connect the DMX cable again
and try to disconnect the DMX units one
by one when listen to the hum. With a
ground lift on the failure unit the hum
should disappear.
Set the Master fader to its maximum
position before starting mixing.
This is correct. The Master fader is only
working on active faders in Mix Mode.
