Marantz Sr7200 Reset
After several exchanges with Marantz, they gave me the wrong procedure.
To reset the SR7200
While powered off, press A/D + FP +Dimmer (all three buttons)
Press the main power switch till powered on
The receiver is cleared of all settings. You have to reprogram your inputs, tuner, speakers and levels.
I googled this all over the place and is not to be found. Hopefully, it can now be found here.