Thank you very much for your valuable suggestion! We will solve it as soon as possible!

PCB Schematic

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Schematic capture or schematic entry is a step in the design cycle of electronic design automation (EDA) at which the electronic diagram, or electronic schematic of the designed electronic circuit is created by a designer. This is done interactively with the help of a schematic capture tool also known as schematic editor.

Community > Groups > PCB Schematic > schematic needed for Yamaha YM boards
schematic needed for Yamaha YM boards
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Well, as usual, you can't trust ANY documentation to get it right!
I have a CSM84, model PA1306/20, the last model with DC brush motors. I have the service manual for the machine, it has schematics of much of the machine, but skips the servo amps and CPU board. I have M5841-03 drives for the DC brush servos. The CPU-3 section consists of a single page pictorial of the CPU board, and that's IT! No schematic.
If anyone has schematics for these boards, (or a Yamaha YM84 or machine from that series under their brand should have the same boards) I would very much like to complete my set, for "just in case"....
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