Seiko Cal. 7D48A Parts Catalogue and Technical Guide
Seiko Cal. 7D48A Parts Catalogue and Technical Guide — comprehensive parts list and service manual for the Seiko Cal. 7D48A automatic generating system quartz watch movement. This technical guide includes detailed movement specifications, functional descriptions of power save and time relay systems, perpetual calendar operation principles, and assembly diagrams with numbered component references essential for repair and maintenance work. Features exploded views of the complete movement architecture, case back assembly procedures, and calendar mechanism components, plus technical remarks and troubleshooting guidance for technicians performing service or restoration on this movement.
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Document Details
- Format
- Pages
- 8
- Size
- 1.8 MB
- Category
- Watchmaking