Try this one Fran
http://www.casionz.co.nz/Site/Pronto/Files/user_manuals/MZ2000 USER MANUAL.PDF It's obviously just scans of the original manual but all the same although it's a little rough it should provide you with all the info you need.
The main reason I keep the New Zealand Casio website at
http://www.casionz.co.nz listed on my Casio page at Synth Zone is because they have lots of hard to find manuals scanned there for download.
[This message has been edited by Nigel (edited 12-21-2005).]