Service manual of Yamaha analog?,digital? portasound PS-1, PS-2, PS-3

https://drive.google.com/file/d/1oYrbGRGs9n6rrG27sjQBBo-8JzF8o9pf/view


Link was found from gearslutz
https://www.gearslutz.com/board/geekslutz-forum/863188-yamaha-ps-1-1st-generation-portasound-ic-identification-help.html