Quartz Libri GmbH Quartz Watch Repair: The Complete Manual

Diagnose before you replace. Measure before you condemn.Most of the world's watches are quartz. Almost nobody is taught to repair them.A high-grade quartz caliber contains a gear train machined to the same tolerances as a mechanical one, running in jewelled bearings and wearing in the same way. It contains a stepping motor whose rotor turns exactly half a revolution, thirty-one million times a year, without missing a step. All of it is serviceable. Almost none of it is taught.This is not a book about how quartz watches work. It is a working method manual, a diagnostic reference, a set of bench checklists and a service record system, written by a WOSTEP-certified master watchmaker with thirty years at the bench.What is inside: - 30 original technical diagrams, including ten step-by-step procedural illustrations showing the tool in position, the working angle, and the mistake to avoid.- Caliber quick-reference tables giving manufacturer-specified current draw, coil resistance, rate tolerance and cell for around fifty caliber families - and stating plainly where a figure is not published.- The signal chain end to end, and how to find where it breaks.- Complete service: disassembly order, four-bath cleaning, inspection criteria, lubrication map, reassembly and testing.- Electronic diagnostics - voltage under load, coil resistance, current draw, and what each reading actually tells you.- Battery chemistry, and the one substitution that destroys movements.- Water resistance stated honestly, and how to explain it to a customer.- Chronograph, solar, digital and multifunction movements.- Vintage quartz restoration, and why the circuit is the part you cannot replace.- 12 worked diagnostic cases with the readings taken, the fault found, and the lesson from each.- Reference tables, procedure checklists and service record forms.For watchmakers, repair technicians, serious hobbyists and vintage-watch collectors - and for anyone who has been told a quartz watch is not worth opening.Independent and unaffiliated. Not authorised or endorsed by any watch manufacturer. Brand and caliber names are used descriptively for identification only.