PSR-37/PSR-38 Portatone Service Manuals

Yamaha Portatone PSR-37/PSR-38 Service manuals. You must have a PSR-37 service manual before servicing the PSR-38 unit. We have put both these manuals together so that they will both be covered. Both units are 61 note type keyboards. All facets are covered, specifications, technical data, board layouts,necessary parts lists and schematic diagrams.