DX7S Service Manual

Downloads for the Yamaha DX7 and TX7 module

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brianj
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DX7S Service Manual

Unread post by brianj » Sat Oct 07, 2017 7:37 pm

Found one on eBay - just got it scanned in. Enjoy!

edit: 1st page was wrong one! Fixed it!
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DX7S_ServiceManual.pdf
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Thanks!
Brian
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SalvatrixMundi
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Re: DX7S Service Manual

Unread post by SalvatrixMundi » Wed Feb 12, 2020 11:28 pm

Thank you. There's another one around missing most of the pages. Didn't seem like it would be very useful for actual service. I was trying to figure out what chip the "main CPU" was looking through it repeatedly but only able to find a reference to "6805S" for the sub-CPU. Motorola 6805 or what? Pretty much, well they're listed as HD6805S1A and HD63B03YP, ok yeah basically cheaper and more advanced 6805s manufactured by Hitachi with some really opaque model numbering. (By then referred to as micro-CPUs and now what we would call microcontrollers)
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