TK85, detailed schematic diagram

Like by subject, I'm looking for detailed schematic diagram of the TK85
(brazilian clone of the ZX81). From where can I download it?

Come da oggetto, stò cercando lo schema elettrico dettagliato del TK85
(versione brasiliana dello ZX81). Da dove lo posso scaricare?

Thanks for your attention, bye.

--
Mic.

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Some of the w.o.s. forum members are from Brasil, and I'm pretty sure
one of them has a TK85. It shows on his signature, but I can't
remember the nick right now.