User manual Yamaha PSR-E423 (English - 92 pages)
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Main board, Yamaha PSR-E423 - Syntaur
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Features/Specifications - Yamaha PSR-E423 Portable Keyboard ...
Yamaha PSR-E423 61-Key Portable Keyboard | zZounds
User manual Yamaha PSR-E423 (English - 92 pages)
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:max_bytes(150000):strip_icc()/Yamaha-PSR-E423_large-56a72e185f9b58b7d0e7a0bb.png "Yamaha PSR-e423: A 61-Key Musical Keyboard")
Yamaha PSR-e423: A 61-Key Musical Keyboard
