Service Manual for Seiko Cal. V735A / V736A

Service manual for Seiko Cal. V735A / V736A quartz movements, providing comprehensive technical documentation for repair and maintenance of these precision stepping-motor mechanisms. Covers movement specifications including Ø 24.0mm outside diameter, Ø 23.3mm casing diameter, and 2.7mm height, along with three-hand time indication and load-compensated stepping-motor drive system. Details calendar functions (date only, or combined day/date with instant-set mechanisms), train wheel adjustment device, electronic circuit reset function, and battery life indicator. Accuracy specifications show less than 20 seconds monthly gain or loss. Includes regulation system parameters and measuring-gate settings essential for service checks. Hand installation reference table with dial numeral positioning coordinates ensures proper dial integration during assembly. Electronic schematic shows complete circuit block structure with terminal identification for input, coil output, crystal unit, and C-MOS IC connections. Battery specifications cover SR920SW variants from Seiko, Maxell, Sony, Matsushita, Eveready, and Fujitsu, each with approximately 3-year operational lifespan. Provides critical value-checking data including coil block resistance range (2.4kΩ–2.8kΩ) and current consumption figures for diagnostic troubleshooting. Essential reference for watchmakers and service technicians working with these movements.