The number lit in orange just shows that the last bill that was inserted was a $1 bill.
The Sentry Smart Bezel will illuminate different icons if there is a fault with the validator. If the ambulance or eye aren't lit, then everything should be game ready.
Is the insert bills message on the bezel lit with scrolling lights behind it? That's basically the same thing as the bezel lights coming on when the validator is ready.
If the Smart Bezel thinks everything is good to go, then the problem most likely is in the bill path. I'd open it up, clean the optics, check the belts ect. and make sure the bill path is not obstructed.
Good luck,
Curtis ash100