First of all, here is the main ONLINE SUPPORT page for your model:
And here is a direct link to the ONLINE USER'S MANUAL for that model:
To view the Support Page or the Owner's Manual with Operating Instructions just use your mouse to click on the link, which is the underlined and highlighted text just above. This will open a new web browser page automatically for you and allow you to view the information at the website indicated and the contents of the Owner's Manual.
You may need ADOBE READER installed on your computer to read PDF documents.
You can download this free at WWW.ADOBE.COM
Click on the DOWNLOAD ADOBE READER button on right side of the ADOBE home page when you get there, then follow the onscreen instructions to install the software on your computer.
You should just be able to use the TAPE REC AUDIO OUT (L/R) jacks on the back of the Yamaha 493 unit as your secondary amp's input signal. You might even be able to use the VCR AUDIO OUT (L/R) jacks as well. See page 8 of the manual for a detailed diagram of the rear connections on your set.
I hope that was helpful to you, good luck.
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