Citizen Y780A/Y786A/Y789A Digital Quartz Technical Guide
Technical service manual and parts list for Citizen digital quartz watch models Y780A, Y786A, and Y789A. Provides complete specifications, circuit block schematic, and display function reference. Covers full disassembly and reassembly procedures for both module and case components, along with detailed cleaning instructions. Includes systematic checking and adjustment procedures supported by a troubleshooting flowchart for rapid diagnosis. Technical sections address battery voltage measurement, conductivity testing, water resistance verification, liquid crystal display contact inspection, accuracy calibration, operational function testing, switch component inspection, indicator bulb assessment, and alarm mechanism verification. Essential reference for technicians performing service, maintenance, and repair work on these quartz models.
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Document Details
- Format
- Pages
- 10
- Size
- 546.0 KB
- Category
- Watchmaking