I had the same question on my 970, and yes I read the manual. My interpretation was to press the device selection button and then the power button, which of course didn't work.
Just to be clear, press the source buttons at the bottom of the remote to power on. These are the buttons to switch input from one source to another, not the device buttons at the top that change what device the remote is controlling. (i.e., press the DVD button at the bottom to turn on the system with DVD input selected)
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