Seiko Cal. 5M22A, 5M23A Parts Catalogue and Technical Guide
Parts catalogue and technical guide covering Seiko automatic watch movements Cal. 5M22A and Cal. 5M23A. Includes comprehensive parts lists with numbered diagrams and specifications for both movements, covering the 27.6 mm case diameter, step motor with load-compensated driving pulse circuitry, and automatic generating system design. Provides complete disassembly and reassembly procedures with detailed lubrication instructions for technicians and watchmakers. Technical sections address circuit block structure, hand installation methods, capacitor unit assembly, oscillating weight bridge configuration, train wheel bridge calibration, and adjustment procedures. Also includes resistance values, current consumption data, and systematic verification methods for the automatic generating system. An essential workshop manual for service and repair of these movement calibers.
Documentation must be downloaded on a computer (PC, Mac, or Linux).
Do not use a smartphone or tablet to download documentation; they generally lack sufficient memory capacity to handle large files, and few users know how to locate the download folder on these devices.
Once downloaded, you can use it right away and even print the pages you need, or use your smartphone in photo mode to translate into the language of your choice: Google Translate
Document Details
- Format
- Pages
- 12
- Size
- 354.8 KB
- Category
- Watchmaking