Seiko A944A Dual Power Module Parts Catalogue and Technical Guide
Seiko A944A dual power module parts catalogue and technical service guide covering the complete nematic liquid crystal display module (24.5 mm to 27.5 mm diameter) with multiplex drive circuitry. This repair manual provides step-by-step disassembly and reassembly procedures essential for technicians servicing this dual power system. Detailed parts diagrams include all component part numbers, circuit block schematics, and electrical specifications. The battery installation section covers the SEIKO CR1616 cell with 7-year operational life and solar cell replacement procedures. Includes practical guidance on switch lead terminal installation, electrical value verification, and the critical relationship between liquid crystal panel segment mapping and C-MOS-LSI output terminal assignments. Technical data incorporates upconverter coil specifications and current consumption measurements for diagnostics and performance troubleshooting. A comprehensive workshop reference for module-level repair and component-level maintenance.
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
- 6
- Size
- 176.7 KB
- Category
- Watchmaking