Seiko G139A Quartz Module Parts Catalogue and Technical Guide
Seiko G139A quartz module parts catalogue and technical guide covering this precision liquid crystal timepiece component. The workshop manual provides complete specifications for the 27.4mm diameter, 5.73mm height module featuring a nematic liquid crystal FEM display, along with a comprehensive parts list identifying all 11 components. Includes exploded diagrams showing battery assembly, circuit blocks, liquid crystal panel, reflecting mirror, frame, connectors, and insulators. Step-by-step disassembly and reassembly procedures walk technicians through module service, with dedicated battery installation instructions. The circuit block structure diagram documents the crystal unit, upconverter coil, solid condenser, bulb, transistors, and supporting components. Technical specifications detail the 1/4 multiplex LCD driving system, stopwatch capability to 30 hours, timer function, alarm system, and illuminating light function, supplemented by current consumption data for diagnostics and power budgeting. An essential service reference for repair technicians and parts specialists working with Seiko G139A modules.
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Document Details
- Format
- Pages
- 4
- Size
- 96.6 KB
- Category
- Watchmaking