How To Manually Set The Date; Preliminary Position; Automatic Hand Position Adjustment Function (Adjustment Of Preliminary Positions Of Hour, Minute And Seconds Hands); Setting The Preliminary Position Of The Date/Stopwatch Hands - Seiko C-20 Instructions Manual

■ How to manually set the date

When the date is not changed automatically due to an environment in which a radio signal cannot be received outside
the radio signal reception range, etc. (when changing from a month with 30 days or less to a month with 31 days), set
the date manually.
• The date can be set independently regardless of the time.
• When the watch is used in an environment in which a radio signal can be received again, receive a radio signal to
set the time. "Automatic reception and manual reception" → P.19
* When the watch receives radio signals after the date is manually adjusted, it displays the date received from radio signals.
* If the date remains incorrect even after a successful radio signal reception, the preliminary position of the date may be misaligned.
"Set the preliminary position for the date, and the hour and minute hands." → P.87
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Pull out the crown to the first click.
The small seconds hand rotates until it points to the 30-
second position and stops.
The watch enters the manual date setting mode.
(If the stopwatch is moving, the stopwatch hands also
stop at the 0-second position.)
* The watch operates while it enters the mode.
(The small seconds hand remains stopped.)
* When the crown is a screw lock type, unlock it. → P.15
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Preliminary position

When the watch is unable to display the precise time or date even if it successfully receives a radio signal, or when the
stopwatch hands do not stop at the 0-position even after resetting the stopwatch, the preliminary position may be misaligned.
The possible causes of misalignment of preliminary position are as follows:
In the case of having a strong impact : the misalignment may occur when dropping or hitting the watch.
In the case of a magnetic influence : the misalignment may occur when bringing the watch close to an object which
generates magnetism.
"Examples of common magnetic products that may affect watches" → P.59
* The condition "the preliminary position of hand is misaligned" means that compared to a health meter, "the zero position of a meter
is misaligned, causing a correct weight not to be displayed."
■ Automatic hand position adjustment function (Adjustment of
preliminary positions of hour, minute and seconds hands)
The hour, minute, and seconds hands have an "automatic hand position adjustment function," which automatically
corrects an incorrect preliminary position. Automatic Hand Position Adjustment Function activates once a minute for
the small seconds hand and at 12:00 both for the AM and PM for the hour and minute hands.
* This function works when the preliminary hand position is misaligned due to external factors such as strong impact or magnetic influence.
It does not work to adjust accuracy of the watch or slight deviations which may occur during the manufacturing process.
* The preliminary position of the hour and minute hands can also be manually adjusted.
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"Set the preliminary position for the date, and the hour and minute hands." → P.87

■ Setting the Preliminary Position of the Date/Stopwatch Hands

Since the preliminary position of the date and stopwatch hands is not automatically adjusted, it must be adjusted manually.
"Set the preliminary position for the date, and the hour and minute hands." → P.87
"Setting the Preliminary Position of the Stopwatch Second and Minute Hands" → P.91
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Pull out the
crown to the
first click
0 1
30-second
position
2
Press Button A to set the date.
To advance a
Press button once and then release it.
date
Keep pressing down the button for
Continuous
longer than 2 seconds. Press the button
Advance
once again to stop.
* The hands do not move by turning the crown.
* While the date is moving, the button cannot be operated.
* Set the date by advancing the date. The date cannot be
reversely moved.
3
Push the crown back in.
The operation is completed.
* When the crown is a screw lock type, lock it. → P.15

How to set the preliminary position

■ Set the preliminary position for the date, and the hour
and minute hands.
The preliminary position of the date is the "1st".
The preliminary positions of the hour and minute hands are
"0:00 AM".
When the preliminary positions are incorrect, the correct time and date cannot be displayed even if the
watch receives radio signals.
In such a case, by correcting the preliminary positions, the loss or gain of the time or date can be corrected.
When the numerical number of the date is not located at the center of the window, it can be corrected by
the same procedures as mentioned above.
To correct the preliminary positions, perform the following operation.
Press
Button A
0 1
Push the
crown
back in
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