757413

Seiko 7B62 Manual

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In case of an abnormal movement
In the case that the watch moves abnormally or that the watch does not move at one-second intervals even
after fully charging the battery, then it can be returned to normal operation using the following operation.
■ Reset the system
01 2
Pull out the
crown to the
second click
1Pull the crown to the second click.
The seconds hand stops on the spot.
* When the crown is a screw lock type, unlock it.
→ P.13
EN 76
7
TROUBLESHOOTING
Press and hold the
button for 5 seconds
and then release it
3When all the hands stop pointing to 12 o’clock 0 minutes and 0 seconds, push
the crown back.
The seconds hand starts moving from 12 o’clock 0 minutes and 0 seconds.
* After a system reset, the time difference setting is set to +9 hours (JJY).
After completion of a system reset, perform the following operations.
• “Set the preliminary position for the date, and the hour and minute hands.” → P.65
• “Setting the time difference (Setting the radio signal transmitting station)” → P.29
• “How to conduct manual reception (Receive a radio signal manually)” → P.56
* When the crown is a screw lock type, lock it. → P.13
2Press and hold the button for 5 seconds
and then release it.
After releasing the button, approximately 5 seconds
later the seconds hand moves, and stops at the
0-second position.
Then the hour and minute hands will start to move
and stop pointing to 12 o’clock 0 minutes.
* The button cannot be operated until all the hands stop.
EN 77
7
TROUBLESHOOTING
Specifications
Cal. 7B62 / 7B72
1. Features Basic watch with three hands (Hour, minute and seconds hands), date display
2. Frequency of crystal
oscillator
32,768 Hz (Hz= Hertz, cycles per second)
3. Loss/gain (Monthly
rate)
Loss/gain ±15 seconds in a monthly rate (Except the cases when the watch is used
without time adjustment by receiving a radio signal and when it is worn on the wrist within
a normal temperature range between 5 °C and 35 °C)
4. Operational
temperature range
Between −10 °C and +60 °C
5. Driving system Step motor (Hour and minute hands, seconds hand, and the date)
6. Power source Secondary battery, 1 piece
7. Duration Approximately 9 months (Fully charged, and the Power Save is not activated)
* If Power Save is activated after it is fully charged, the watch continues to run for approximately
2 years at maximum.
8. Radio signal reception
function / radio signal
transmitting station
Automatic reception (Before 2:00 AM, 3:00 AM and 4:00 AM)
* It varies depending on the radio signal receiving condition.
* After radio signal reception, the watch will start to work depending on the quartz movement
until the next reception.
* Manual reception is available.
9. Integrated circuit Oscillator, frequency divider, drive and reception circuit: IC, 2 pieces
* The specifications are subject to change without prior notice due to product improvements.
EN 78
8
SPECIFICATIONS
EN 80
… 21


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