Seiko Quartz Cal. 7A28A Parts Catalogue and Technical Guide
Complete parts catalogue and technical guide for the Seiko Quartz movement calibre 7A28A. Includes exploded views of all components, detailed parts listing with reference numbers, specifications, circuit block diagram, disassembly and reassembly procedures with lubrication instructions, designation and operation of functions, and checking and adjustment procedures. Features chronograph function with 5/100 second counting capability, step motor driving system, rotary step switch regulation, and battery life indicator.
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Document Details
- Format
- Pages
- 11
- Size
- 523.2 KB
- Category
- Horlogerie