Yamaha Original Service Manual for the QY10 Portable Midi Sequencer / Synth / Drum Machine Unit.

This is an original service manual for the QY10 midi music sequencer. I have 2 of these service manuals available, both in very good condition, with no writing, creases or worn pages, just one small stain on the front cover of one of them as shown in the photo.

Would be very helpful to work on / test / fix and repair your QY10!

 Some details:

• full specifications
• panel layout
• circuit board layout
• block diagram
• dissembly procedure
• LSI PIN description
• circuit boards
• test program
• error messages
• midi data format
• midi implementation chart
• very detailed parts list
• the very large overall circuit diagram foldouts

• 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. Thank you so much for looking!

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