Schemas lezen

Reading schematics, of electro-mechanical pinball machines, bingos and slot machines. This book by Henk De Jager has the reading of these schematics as topic.
It doesn't explain in detail how the machines work. That's in Henks other book. This book explains you the possible circuits, how to read and interpret them. How are the symbols on paper related to actual components in your machine, where to find and how to identify them. And finally, how to troubleshoot common issues. If a wire or switch is broken, how would you trace which one and where.