The Complete Handbook of Printer, Copier, & Fax Machine Circuit Boards

I've been repairing printers for 12 years, and this is the first book that treats the circuit boards like something you can actually understand, not some mystery box. The chapter on identifying which board does what — formatter vs. engine vs. fuser control — clarified things I'd been learning by trial and error. The troubleshooting section alone is worth the price; I've already used the power supply test procedure to fix a Samsung that I would have quoted for a full board swap. This is going on my shop shelf next to my multimeter.

As someone who buys broken printers in bulk and flips them, this handbook is a goldmine. The explanation of how the different boards talk to each other and how to check for the common failure points has cut my diagnostic time way down. I finally understand why some boards are interchangeable across models and others aren't. The business chapter gave me solid ideas for grading and reselling pulled boards, which I hadn't done before. It's practical, direct, and I've already recommended it to two other guys in the trade.

Solid book overall. I'm an IT admin for a mid-sized company, not a full-time repair tech, and this was a good deep dive. The chapters on installation and maintenance were genuinely helpful, and I like that it doesn't read like a marketing brochure. I dropped one star because I found a couple of sections a bit too dense — the connector pinout details in Chapter 2 felt like overkill for someone who just wants to swap a board now and then. But for a reference, I can see myself using it for years. Good value.

I got this to help with my side business fixing copiers and fax machines for local offices. The chapter on troubleshooting is the real deal — it walks you through checking the power supply rails first, then moving to the engine controller, which is exactly the right order. I appreciated the concrete voltage readings and what they mean. The only reason it's not five stars: I wish there were more photos or diagrams of actual boards. The text descriptions are good, but a visual would have made some parts clearer. Still, a very useful book.

This book finally explains why my old fax machines sometimes have the same board as a newer printer model, and how to check. The maintenance chapter gave me a simple checklist for inspecting connectors and checking for capacitor swelling that I now use on every machine that comes through my shop. I also liked that they mention the pitfalls of aftermarket boards without being preachy about it — just facts about what to look for. Very practical. Minor complaint: the glossary section at the back doesn't cover every acronym, but I have page markers now.

The book is informative and well-organized, but it felt a little too focused on the technician who has all the fancy test equipment. I'm a hobbyist who works on my home printer and an old laser unit, and some of the guidance on diagnosing with an oscilloscope and logic analyzer seemed beyond what a casual person would have. The basic stuff on identifying boards and checking for damage was clear and helpful. It's a good book for the right reader, just maybe not for someone looking for a quick fix guide for a hobby project. Three and a half stars, really.