Seiko Lassale Quartz CAL.9550A CAL.9559A Service Manual
Service manual for Seiko Lassale quartz watches, CAL.9550A and CAL.9559A models. This workshop manual covers complete technical specifications for both calibers, including a 7-jewel movement with step motor system and load-compensative driving pulse technology. Detailed circuit block architecture is provided, with CMOS-IC and crystal oscillator schematics. Step-by-step disassembly and reassembly procedures are illustrated with numbered component diagrams for precise rebuilding. A dedicated lubrication guide covers all bearing surfaces and moving parts. Checking and adjustment procedures address output signal verification, hand setting alignment, battery voltage and conductivity testing at 1.55V, circuit block conductivity measurement, coil block resistance values, reset and train wheel positioning, gear train operation, setting mechanism function, accuracy calibration, current consumption measurement, water resistance verification, switch component testing, and final appearance inspection. Essential reference for watch technicians and service centers performing routine maintenance or complete overhaul on these movements.
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Document Details
- Format
- Pages
- 5
- Size
- 226.0 KB
- Category
- Watchmaking