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Original Yamaha Service Manual for advanced PSR PortaTone Keyboards. Take your pick, for repair and for circuit bending.

Pick one for: PSR-2500 / X2500 or PSR-3500 / X3500 or PSR-4500 / X4500

Choose ONE original Yamaha Service Manual. This is a full, original service manual, with specs, panel layout, block diagram, dis assembly procedure, test program, parts list, exploded views, circuit board diagrams and more! These are all in very good condition and you can choose whichever model you like above.

Includes:

• Specifications
• Panel Layout
• Circuit Board Layout
• LSI Data Table
• IC Block Diagram
• Overall Assembly
  
• Circuit Boards
• Parts List
• Overall Circuit Diagram
  
• More Depending on the Model  

Modify / Circuit Bend it .... or fix some broken features, make it look pretty again or even bring back your PSR from the dead with help from this manual!

• 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.

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