DJM 900 NXS2 Return AUX

Hi there, i have Toraiz AS1 connected to RETURN port, and selected as Return AUX on CH1 in my case, where COLOUR FX and EQ works perfectly, but the moment I turn BEAT FX selector to CH1 to use it all in conjunction, SEND/Return toggle switches off and sound on CH1 stops, once BEAT FX is moved away from CH1 , signal returns.

If my explanation isnt clear enough, i could upload short video.

Cheers