Elevator Troubleshooting & Repair: A Technician’s Certification Study Guide

I like to buy a textbook when I want an overview of a subject, in order to understand better what the pros are doing. We've been having elevator problems in our building, and I wanted to be in a position to understand the repairs that have been tried. Judging from the blurb and reviews, this seemed like a suitable book. But it isn't an introduction to elevators. Rather, it's more like scattered stuff that the author feels an elevator technician should know.

I purchased this book in hopes of learning new/advanced troubleshooting techniques. This book does not provide that, instead it regurgitates ASME 17.1 and NEC 620 requirements for elevators and describes how to use multimeters and oscilloscopes. I sincerely doubt the author has seen the inside of a hoistway.