"RX-A3000_omrc_en1.pdf" is just the A3000 owner's manual. I'm guessing that you have that already. If not, you can go to the Yamaha RX-A3000
product page, click on the "Support" tab about midway down the page, and then click the "RX-A3000 Owner's Manual..." link. I'd link to it directly, but it won't let me.