Service Guide Seiko Cal. V742A / V743A Watch Movement
Service guide for Seiko V742A and V743A watch movements. Includes specifications (outside diameter 26.25mm, height 2.9mm, 3-hand time indication, step motor driving system, date calendar with instant setting device), hand installation height discrimination table with printed position examples, battery connection remarks (SHIOJIRI LTD or MORIOKA HATTORI INC markings), circuit block structure diagram with terminal identification, and value checking table (coil block resistance 2.4kΩ - 2.8kΩ, current consumption specifications, battery: SEIKO SR920SW, 1.55V, approximately 3 years life).
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
- 1
- Size
- 82.3 KB
- Category
- Horlogerie