Seiko Cal. 5M42A, 5M43A Parts Catalogue and Technical Guide
Complete parts catalogue and technical guide for Seiko automatic watch movements Cal. 5M42A and Cal. 5M43A. Includes detailed disassembly/reassembly procedures, parts diagrams with numbered components, specifications (27.6mm diameter, step motor with load compensated driving pulse, automatic generating system, power reserve indicator, overcharge prevention, electronic circuit reset, train wheel setting device, date and day calendar functions), lubrication specifications (Moebius A and SEIKO Watch Oil S-6), technical remarks on circuit block structure, capacitor unit handling, oscillating weight bridge lubrication, train wheel bridge positioning, and electrical value checking (coil block resistance 1.7kΩ-2.1kΩ, generating coil 280Ω-380Ω, current consumption <0.7µA whole movement, <0.4µA circuit block alone).
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Document Details
- Format
- Pages
- 12
- Size
- 314.6 KB
- Category
- Horlogerie