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Yamaha PSR-S670 instruction manual and user guide ; Device Category: Electronic Musical Instruments ; Device Group: Piano ; Brand Model: Yamaha PSR-S670 Manual Yamaha PSR-S670. View the Yamaha PSR-S670 manual for free or ask your question to other Yamaha PSR-S670 owners. This instrument has the following document and instructional materials. ▫ Included Document. Owner's Manual (this book). Provides overall explanations of the Manuals and User Guides for Yamaha PSR-S670. We found 9 manuals for free downloads: Datasheet, Manual, Owner's manual, User's manual, installation GuideThe page is about user manuals, installation instructions, specifications, pictures and questions and answers of Yamaha PSR-S670. This Reference Manual explains advanced features of the PSR-S670. Please read the Owner's Manual first, before reading this Reference Manual.