Seiko Cal. 2P20A Parts Catalogue and Technical Guide
Complete parts catalogue and technical guide for the Seiko Cal. 2P20A quartz movement, essential for watchmakers and technicians performing service and repair work. This workshop manual provides detailed specifications, comprehensive disassembly and reassembly procedures with a fully numbered exploded parts diagram, precise lubrication instructions, and critical assembly notes. The movement features a two-hand configuration with 20-second step motor drive, train wheel setting device, and electronic circuit reset switch. Movement dimensions: 13.0–15.5mm diameter, 1.8mm height. Operates on SEIKO SR516SW or Maxell SR516SW batteries (1.55V, 3-year service life). The movement incorporates 2 jewels and includes full electronic circuit reset capability for maintenance and troubleshooting.
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Document Details
- Format
- Pages
- 6
- Size
- 171.0 KB
- Category
- Watchmaking