Seiko Cal. 7T39B Parts Catalogue and Technical Guide
Complete parts catalogue and technical service guide for the Seiko Cal. 7T39B quartz movement, essential reference material for watchmakers and service technicians. Provides comprehensive exploded views and numbered component diagrams for systematic disassembly and reassembly. Details lubrication specifications critical for proper movement function, along with battery particulars including the SR927W cell (1.55V, 2-year service life). The integrated step motor with electronic circuit reset function ensures reliable timekeeping. Covers the stopwatch mechanism with 1/5-second hand resolution, dual time display capability, and alarm function. Movement dimensions: 27.6mm outside diameter, 4.0mm height. Technical remarks address winding stem handling, day dial guard assembly, calendar correction wheel interaction, and circuit block configuration—information necessary for proper servicing without damage. Includes specifications and technical notes sections structured for workshop reference and repair planning.
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
- 15
- Size
- 435.8 KB
- Category
- Watchmaking