Remember that the unit loads DMX address data only when powered up, and power must be
removed and restored before the unit will respond to a change in the DMX address or mode selector
settings. If the settings are correct, but no display is observed, then the DMX control signal may be
intermittant or low quality, or the unit may have an internal problem with the DMX address or
mode selection circuitry, or with the LED display or driver circuits. .
To check the basic function of the unit, remove power and DMX connections and set the unit to
manual mode by setting the DMX address switches to 699. Reapply power to the unit, and observe
the display. If a normal display is observed, then the LED and driver circuits are fully functional,
but the DMX control input signal is absent, or is being ignored by the illuminator. Check the
setting of the mode selector and address switches for proper choice of display mode and DMX
address range. Failure of the unit to respond to a known good DMX data signal when set to the
proper mode and address range indicate a problem with the internal circuitry.
