If definately NO 1000's then it must be a bonus feature that is awarding 2X 500 points, but i would expect the 100's to move also .. unless of course they by passed all the 100's to score 1000 by just impulsing 1000 reel... you need to look at your schematic at 1000 coil, work back and find the common of that and chute relay checking all in the path
