Seiko 1F20A Movement Parts Catalogue and Technical Guide
Seiko 1F20A Movement Parts Catalogue and Technical Guide — Complete service reference for the Seiko 1F20A quartz movement. This workshop manual provides detailed specifications and exploded diagrams of all movement components with corresponding parts numbering for accurate identification and sourcing. The guide covers full disassembly and reassembly procedures, step-by-step lubrication instructions to maintain precision timekeeping, circuit block architecture, and valve checking parameters essential for quality control and repair work. Movement specifications: 12.5mm outside diameter, step motor driving system, electronic circuit reset switch, monthly rate under 15 seconds, powered by Maxell SR416SW battery (1.55V, 3-year service life), 0 jewel configuration, 2-hand layout. An indispensable technical reference for watch technicians and repair professionals working with this caliber.
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Document Details
- Format
- Pages
- 4
- Size
- 110.5 KB
- Category
- Watchmaking