Just bought one of these 30/03/2013. The extremely rare/ highly collectible Rack Mount Series, Ibanez AD3000 Analog Delay/ Multi Flanger, was made for a short time between 1979 and 1982.
Service Manuals seem to be almost impossible to come by for this particular model, unlike the Ibanez AD-230, AD-202, which I've overhauled, successfully calibrated/ managed to get Service Manuals/ schematics, in the past.
Looking at giving it a complete overhaul and replacing electrolytic capacitors through out, so it will last another 30 years.
If any fellow owners can point me in the direction of a Service Manual, it would be greatly appreciated!