Y590 Analog Quartz Watch Technical Guide and Parts List

Comprehensive technical guide and parts list for the Seiko caliber Y590 analog quartz movement. This service manual covers the full specifications of this compact 2-hand quartz watch—13.0 × 15.15 mm case diameter, 2.8 mm movement height, powered by a silver oxide battery, with 2 jewels for precision regulation. Includes circuit schematic diagram essential for electrical diagnostics and repair verification. Details every screw specification used throughout the movement for accurate reassembly. Step-by-step disassembly and reassembly procedures with technical illustrations guide you through casing removal, winding stem service, minute hand installation, dial handling, and hour wheel positioning. Dedicated sections on cleaning and proper lubrication techniques keep the mechanism operating smoothly. Thorough checking and adjustment procedures cover battery voltage and conductivity testing, coil block performance verification, gear train mechanism inspection, and accuracy calibration—everything needed for complete movement restoration and certification. An essential workshop manual for watch technicians and experienced hobbyists servicing Seiko quartz caliber Y590 movements.