I've just added a nice Xenon to the line up and have a few questions.
First, the machine was awarding an extra ball as soon as the first switch around the top saucer was hit. The manual shows awards set by setting 16 and 17 in the ancient settings menu system. 16 is on 03 and 17 was on 02, changing 17 to 01 seems to have stopped it. I'm guessing it was awarding an extra ball for a very low preset score being achieved but I'm not sure if I understand that correctly, or how to set the score limit. Can someone explain please?

Secondly, I've noticed a noise coming from the coin door quite often during play, on inspection it seems to be the small coil on the back of the door energising/de-energising, is it supposed to do that? what is it doing? it seems to do it almost constantly, for example when the top saucer is hit or the ball drains the coil de-energises. It seems to be energised all the time when the machine is in attract mode, seems odd a coil being energised for so long. I'm guessing its completely normal as the machine plays fine but just curious.