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Original Yamaha PSR-540 Portatone Digital Keyboard Owner's Operation Manual.
This is an original Yamaha User's / Owner's / Operating Manual for the advanced Yamaha PSR540 Portatone keyboard. It's in overall very good condition, and it's complete and very helpful if you have one of these excellent Portatone keyboards. This manual is all in English and has a thick 160 pages of great information on using, playing and caring for your awesome PSR.