This also might help you. As Jamal said, you put your jv-1010 on channel 10, and your sequencer on channel 10.
I use that method...sometimes. All of the preset Drum Kits have certain "drum sounds" that make each kit up. Take for example, If you look at a drum set and hear a snare you like, then look at another drum kit and hear a snare you dont like; it may be the same "voice" or snare drum, just tweaked differently to get a diferent sound.
I really have no time or day to screw with the Drum kits. If you go into Patch mode, and look at the "voices" that make up a "patch" you will see all of the drum sounds. Example, 808 snares, 909 snares reggae snares, 808 hi hats, crash cymbals, congas, bells, and so on. All Roland did when they created the "drum kits" is, take those "waveform" drum sounds, put certain ones together, and call it a drum kit. I have the Dance, Techno, and Hip-Hop expansion boards. I use Soundiver as my Librarian. I took every single snare, hat, cymbal, kick, and other percussion sound-(waveform)and assigned it as a "patch". Are you with me? I sometime lose people here.
In other words, If you have factory patch you like ("patch" meaning-multiple "waveforms" being played at the same time), it may have from 1 to 4 sounds that "make up" that patch. Take a look at the waveforms that make that patch up. They are individual tones or sounds. The same way with your drums. So having said all of that, now that each waveform is its own patch, when I lay down a rythym track, MIDI channel 11 is my Hi hats, channel 12 is my snare, channel 13 is my kick drum, 14 is my cymbals.
I hope you understand what I mean, because it can be very confusing if your not used to programming your own patches.
Later,
Mike