Archive of the former Yahoo!Groups mailing list: Yamaha CS80

Hi all. As I continue working on a CS80 I find more errors in the service manual. I thought I'd start a list and see if others have found more. And no, these don't include the various, amusing translation errors from Japanese to English :)

One biggie:
http://therogoffs.com/cs80/manuals/CS80_Service_Manual/05%20-%20KAS%20Circuit%20Board%20&%20Wiring.jpg
The pinouts for IC1 and IC2 are both backwards! Pin 1 is labeled pin 40 and vise-versa. Most folks used to DIP parts know the pins always go counter-clockwise starting from the upper left.

M-card layout:
http://therogoffs.com/cs80/manuals/CS80_Service_Manual/44%20-%20M11-12%20Circuit%20Board%20&%20Wiring.jpg
The resistor values labelled on the layout for R1-R5, VR4-VR6 are the CS60/50 values, not the CS80 values.
This was giving me a headache since the CS80 I'm working on had some M-cards replaced from a CS60 and I'm trying to figure out which ones!

I think it's time for a dinner break...

David