Seiko Cal. M422A Parts Catalogue and Technical Guide
Complete technical reference and parts catalogue for the Seiko Cal. M422A quartz watch movement, essential for technicians servicing or repairing this digital LCD timepiece. Provides full specifications including case diameter of 26.0 mm and movement height of 5.7 mm, along with detailed information on the nematic liquid crystal display architecture and multiplex driving circuitry. Documents all operational functions: 12 or 24-hour time display, calendar, alarm with test function, stopwatch, timer, dual time zone capability, hourly chime signal, and illumination feature with automatic calendar rollover. Covers the complete regulation system employing a trimmer condenser for frequency adjustment, lubrication requirements specifying silicone oil at 500,000 centistokes, and battery specifications for the Seiko CR2025 cell rated at 3.0 volts with an approximate 10-year service life. Includes comprehensive exploded parts diagram with numbered component identification for accurate assembly, disassembly, and parts sourcing. Invaluable workshop resource for watch repair professionals and movement technicians.
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Document Details
- Format
- Pages
- 6
- Size
- 208.5 KB
- Category
- Watchmaking