Are you sure on the AVR model number? I don't remember a STR-DN1000 and the database in CCP confirms that. Could it be a STR-DA1000?

Also, you do not select source HDMI 1 for example in the AVR. You would select TV/Sat or something like that. You can probably reassign them, but they should be labeled from the factory for a input such as TV/Sat. I will need those inputs (Not the HDMI port)