OSRAM EASY DMX 16x4 SO - Manual (Page 44)

44 XII 2009
EASY DMX SO Operation
Troubleshooting
If you cannot remedy the fault, please contact the Customer Service department.
Fault Cause Remedy
Control unit
does not
respond to
the remote
control
No mains voltage present. Switch EASY DMX on using the
external pushbutton. If the DMX
devices do not respond, check the
mains supply.
Illuminant defective. Replace illuminant.
Remote control batteries are
too weak.
Check the display.
Replace the batteries if necessary.
Remote control is outside the
range of the infrared receiver.
Reduce the distance.
Wrong IR coding. Check the IR coding.
Infrared receiver is exposed to
direct light.
Shade the receiver or select another
installation location.
Control unit
does not
respond to
the external
pushbutton
No mains voltage present. Switch EASY DMX on using the
remote control. If the DMX devices do
not respond, check the mains sup-
ply. If EASY DMX responds, check
pushbutton wiring and master-slave
settings.
Sequence in
the master-
slave mode
is not syn-
chronous
No proper master-slave con-
nection.
No or more than one EASY
control unit configured as
master.
More than one EASY PC KIT
connected.
Check master-slave settings on all
devices.
Slaves have already been
programmed and have their
own scenes.
Perform a reset and create the
sequence again.
Unwanted
behaviour of
light output
(colour, dim-
ming, output
level, flicker-
ing)
Wrong DMX addresses set-
ting.
Check the starting addresses of the
DMX devices.
Termination resistors are not
installed properly.
Check if 120 Ω termination resistor is
connected to the first and last DMX
device in the chain.
Activate the internal resistor of EASY
DMX.
Check for more than 2 termination
resistors in the chain.
Wrong cable. Use cable type approved for DMX
signal; see “Wiring limitations”.
Short circuit. Make sure that DMX shield wire is
not connected to any device chassis.
Too many DMX receiving
devices connected to one
EASY DMX control unit.
Reduce number of DMX receiving
devices in the chain.
Use an optically isolated amplifier to
segment the chain.