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Yamaha PSS-270 PortaSound Keyboard Service Manual Booklet

This is a full service manual booklet for the PSS-270 model keyboard. It has specs, panel layout, block diagram, dis-assembly procedure, test program, parts list, exploded views, circuit board diagrams and much more! This booklet is in very good condition, with some minor marks and creases in it, and it's complete. Great to repair or modify your Porta sound.

>>> This is a manual or document, this is NOT a piece of equipment or instrument. If you have any questions, I'm always happy to answer them. Thank you so much for looking!

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