
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.
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
- 7
- Size
- 336.1 KB
- Category
- Horlogerie