Service Guide Cal. V828A - Seiko Quartz Watch Movement

Complete technical service guide for the Seiko caliber V828A quartz watch movement. This documentation provides detailed specifications for a 3-hand time display mechanism with 18.5mm outside diameter (6h-12h position) and 16.8mm (3h-9h position), 17.8mm casing diameter, and 4.2mm height. The movement features a step motor with load-compensated driving pulse system, day-and-date calendar function with instantaneous date correction, and an electronic circuit reset switch. The service manual covers movement replacement procedures, winding stem installation techniques, and hand installation with cross-references to the V81 series documentation. Current consumption verification is detailed using the Seiko Digital Multi Tester S-840A, with technical data showing 0 jewels, no regulation system, a 10-second measuring gate, and compatibility with SR265W, SR826SW, or 377 batteries (1.55V nominal, approximately 2 years service life). The movement maintains a monthly rate variance of less than 30 seconds under normal temperature conditions. Includes cross-sectional and face views of the movement at 2.0x magnification along with comprehensive technical diagrams for troubleshooting and repair work.