Thank you very much, merrylander, for your copy of this schematic.
We don't need to pay to have this schematic. The schematic is on page 25 of the Owner's manual. Unfortunately, the manual on the Yamaha database comes from Yamaha's web site, and they scanned the manual with the same resolution for all pages. Low resolution is acceptable for the text portion, but the schematic needs a better resolution.
I am sure the schematic on page 25 is very good if one scan it with properly. The schematic for the CR-420, CA-410 and CT-410 in the database come from my owner's manuals. I don't remember what resolution I used for the CR-420, but I used 400 dpi for the others, and the files were not that big, less than 1Meg.
My previous remark about the schematic was an invitation to those who have a paper copy of the owner's manual, to take a few minutes to make a good scan of it, and upload it on the database.