Casio ctk900 the Slave and Akai mpc1000 the Master

I am trying to get my Casio ctk900 keyboard to work with the Akai mpc1000 sampler/sequencer, with Casio ctk900 being the slave and Akai mpc1000 the master.

I have got everything in the midi connection right so its got to be the Casio keyboard, and even when I turn the local off I get no sound from nowhere.

So is it anybody out there that knows what I’m trying to say? I can’t change my sound with the Casio ctk-900 without it changing my first sound.

I play the piano, it loops… touch the Casio to change the sound and my piano sound changes. I even change the midi channels on the mpc1000 and it still changes the sound.

Someone please help.