Seiko Cal. Y151A Service Manual
Seiko Cal. Y151A quartz watch movement service manual with complete technical specifications and repair procedures. Covers movement dimensions (Ø 13.5 mm outside, 13.0 mm casing, 2.3 mm height), three-hand display configuration, and step motor with load compensation system. Includes train wheel setting device documentation, electronic circuit reset switch operation, and battery life indicator details for SEIKO/MAXELL SR4215SW 1.55V cells (approximately 2-year service life). Features hand installation discrimination table to ensure correct hand placement during reassembly. Step-by-step disassembly and reassembly instructions with detailed dial and hand removal procedures guide technicians through safe component separation and proper restoration. Electrical value checking data covers coil resistance specifications (3.4–4.1 kΩ) and current consumption measurements for circuit troubleshooting. Zero jewels movement ideal for comprehensive repair and maintenance reference.
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Document Details
- Format
- Pages
- 1
- Size
- 53.8 KB
- Category
- Watchmaking