Emax

I just bought a sequencer (roland mc-500) to go with my emax, but it 
would seem that they don't like talking to each other. When I bought 
my emax, I didn't get a manual, so there might be some super easy way 
to switch it to sequencer, and I dont know it. So if you do, then 
please let me know. I'm also pursuing the problem from the sequencer 
side in case that is the problem. Thanks for your help.