I need technical infos (schematics, service manuals) about the 9825T. In my machine obviously some build-in ROMs (Strings, Adv.Prog., Ext. I/O) are either defective or can't be addressed. I have to know which IC contains which ROM. The adress logic in the 9825B/T is different from the 9825A. So the schematics for the latter don't help.
Achim