Seiko Cal. M421A Digital Quartz Watch Parts Catalogue
Parts catalogue and technical guide for Seiko Cal. M421A digital quartz watch. Includes parts list with reference numbers, component photographs, watch specifications (26.0 x 26.0 mm case, 4.8 mm height, 32.768 Hz crystal oscillator), display characteristics (nematic liquid crystal, trimmer condenser regulation), disassembly and reassembly procedures with lubrication specifications, and detailed checking and adjustment procedures for battery, circuit block, alarm system, piezoelectric element, segment display, and bulb condition.
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Document Details
- Format
- Pages
- 7
- Size
- 336.1 KB
- Category
- Horlogerie