I recieved a Yamaha SY77 From a friend,but he seems to have lost the Users Manual. Is there anyone here can tell me where I can get a Copy of this Manual. If you have any knowledge about the SY77, please Post it for me. Thanks. Musicbboy

Try the Yamaha website or UGBM.com. They sell used music equipment but also have some manuals. I've had my sy77 for about 8 years so I may be able to give you some help.