Seiko S651A Service Manual

SERVICE GUIDE CAL. S651A
1. SPECIFICATIONS
Item
Movement
Outside diameter
Movement size
Casing diameter
Height
Display medium
Driving system
Display system
Additional mechanism
Loss/gain
Regulation system
Measuring gate by quartz tester
Battery
2. VALUE CHECKING
• Current consumption: less than 5.5 µA
Cal. No.
ø27.9 mm
27.5 mm between 3 o'clock and 9 o'clock sides
27.7 mm between 6 o'clock and 12 o'clock sides
—
5.9 mm (6.0 mm including the battery portion)
Nematic Liquid Crystal, FEM (Field Effect Mode)
Multiplex driving system
Calendar display
• Month, date and day; full auto calendar (from January 1995 to
December 2044)
Time display
• Hours, minutes and seconds
Stopwatch display (Up to 10 hours in 1/100 second increments)
Memory recall display
• Lap time memory (Up to 8 lap times)
Timer display (Countdown timer in one second decrements)
• Adjustable timer (Up to 9 hours 59 minutes in one minute
increments)
• Preset timer (Selection of the preset time: 3, 5, 10 and 15 minutes)
Alarm display
• Daily alarm
Electroluminescent panel
Confirmation sound for button operation
Battery life indicator
Sound demonstration
Auto illumination and auto signal function
Monthly rate at normal temperature range: less than 20 seconds
Nil
Any gate can be used.
SEIKO CR2025, Sony CR2025, Matsushita CR2025, Maxell CR2025,
Eveready ECR2025
Battery life is approximately 2 years.
Voltage : 3.0 V
S651A
(x 1.0)