"I ordered a service manual for a Yamaha CLP-560. I promptly received a link to download the manual. However when I opened the file, the manual was not complete. It did not have the circuit and diagnostic information I was looking for. I contacted the supplier, Ricardo Ramirez, through Tradebit. I explained what I was looking for. Ricardo promptly sent me a complete manual file with everything I was looking for! I was extremely impressed and pleased with the response from both Ricardo and Tradebit. I would recommend Tradebit for anyone looking for service information."