cz 1000 broken

My cz 1000 seems to have a problem on alimentation because it don't light up.
I tried with batteries but the dysplay shows jammed characters and it makes no sound or only buzzes.
Can anyone help me?
Is out there any electrical scheme or documentation about my synth?
Thank you.
m

You may have a dead lithium battery . When that happens it will lose all of the sounds and it could make the display do funny things as well . When was the last time the lithium battery was replaced ( they last about 6 years ) . The cz-1000 came out in around 1985 so it is old . All this is asuming that it has not been dropped or something . Once you replace the battery , you will need to reload the sounds from a factory sound cassett or from someone who has stored patches on cassett .