A digital synthesizer which utilizes special processing chips designed to support Casio's Phase distortion synthesis architecture. 8 voice polyphony/ 4 voice multitimbral with 8 stage envelop generators for phase angle and DCA.
Normally pretty reliable machines. Key contacts problems eventually. See the general repair tips for help with this problem if it arises.
I have replacement slider caps that fit the commonly missing CZ series sliders. They have a dished front so they grip better but stick up on the ends more than stock. Here is a photo of CZ5000 with them installed.
American Perfit has parts they say for Casio.
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