i recently bought a casio cz-230s & cannot play more than one note at the same time, does anyone know how i change this so i can play full chords? i've tried looking at the instructions online but still can't figure it out, anyone?

Make sure the SOLO key is set to off as that will put the keyboard in monophonic mode.

The manual can be found at http://www.jz-server.de/casiology/manuals_c.html

the solo button is off, but still mono, i can't see what to do from the pdf... any more ideas are welcomed