Over the years the internet has helped me a lot with service manuals and firmware files:
So here's my thank you! my badly curated collection of files and manuals
it's not just a random dump of documents, i have worked on, or own many but not all of the synths that have manuals here.
if you do decide to sell these on ebay, it would be polite to send me a copy of all the hard to find manuals that you have in your collection. i have some manuals here that you won't find anywhere else, so i'll know who you are.