thomann SePar QUAD LED RGB UV IR User Manual page 52

Troubleshooting
52
Symptom
The unit does not work, no light,
the display is dark
Apparently no function despite
proper power supply
No response to the DMX con‐
troller
LED-PAR
Remedy
Check the mains connection and the main fuse.
Check if the unit is in DMX mode or in 'slave' mode. If so,
check the device into a different mode.
1. If the unit is in DMX mode and the display flashes, no
DMX signal is received. Check that the DMX controller is
switched on. Check the DMX connectors and cables for
proper connection.
2. If the unit is in DMX mode and a DMX controller is
connected and turned on, a dot on the fourth digit of
the display will flash. If it doesn't, no valid DMX signal is
received. Check that the DMX controller is switched on.
Check the DMX connectors and cables for proper con‐
nection.
3. If the display dot is flashing but there is still no
response, check the address settings and the DMX
polarity.