Burn-in would require at minimum for the unit to be turned on - this should have some juice running much of the circuits but probably not all. I would imagine that most people would advise that burn-in truly only happens when the unit is playing. If you want to burn-in while "playing" and not spinning discs then you could always download some music onto a USB thumb drive and let it play on repeat - this might get you pointed in the right direction.
As always YMMV and I defer more of a technical explanation of this process to those more learned than I....
As always YMMV and I defer more of a technical explanation of this process to those more learned than I....