Seiko Cal. 5421A Quartz Watch Parts Catalogue
Parts catalogue and technical guide for Seiko Cal. 5421A quartz watch movement. Includes detailed parts list with reference numbers, exploded mechanical views, specifications for 3-hand display with electronic circuit reset switch, train wheel setting device and battery life indicator. Contains disassembly, reassembly and lubrication procedures, checking and adjustment sections covering output signal verification, hand setting conditions, battery voltage and conductivity tests, coil block resistance checks, accuracy measurement and time regulation adjustments. Quartz frequency 32,768 Hz with 2-pole step motor and regulating switch lever regulation system. 5 jewels, 2.5mm height without battery, Maxell SR527SW battery rated 1.65V.
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Document Details
- Format
- Pages
- 9
- Size
- 247.4 KB
- Category
- Horlogerie