Seiko 5Y75 User manual

1994
NSY5Y75 94-11
Printed on recycled paper
Printed in Japan
ANALOGUE QUARTZ
Cal. 5Y75
INSTRUCTIONS ISTRUZIONI
INSTRUCTIONS INSTRUÇÕES
INSTRUCCIONES
BEDIENUNGSANLEITUNG

Cal. 5Y75
INSTRUCTIONS (P. 0)
INSTRUCTIONS (P. 0)
INSTRUCCIONES (P. 0)
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You are now the proud owner of a SEIKO Analogue Watch Cal. 5Y75. For best results, please
read the instructions in this booklet carefully before using your SEIKO Analogue Watch. Please
keep this manual handy for ready reference.
Vous voici l’heureux propriétaire d’une montre analogique SEIKO Cal. 5Y75. Pour en obtenir de
bonnes performances, veuillez, avant d’utiliser la montre, lire attentivement les explications de ce
mode d’emploi que vous conserverez pour toute référence ultérieure.
Usted es ahora un honrado poseedor del reloj analógico SEIKO Cal. 5Y75. Para obtener de él los
mejores resultados, lea las instrucciones del presente panfleto con cuidado antes del uso de su reloj
analógico SEIKO. Guarde este manual para fácil referencia.
Sie sind nun stolzer Besitzer einer SEIKO Analoguhr Kal. 5Y75. Um die bestmögliche Nutzung Ihrer
Uhr zu gewährleisten, lesen Sie bitte die Anleitungen in diesem Heftchen sorgfältig durch, bevor Sie
die Uhr in Gebrauch nehmen. Verwahren Sie dieses Heftchen, um sich jederzeit wieder informieren
zu können.
Siete ora in possesso di un Orologio Analogico SEIKO Cal. 5Y75. Per ottenere i migliori risultati
dall’uso del Vostro orologio Vi consigliamo di leggere attentamente le istruzioni contenute in questo
manuale prima di passare ad utilizzare il Vostro Orologio Analogico. Conservate poi il manuale per
qualsiasi eventuale futuro riferimento.
Você pode sentir-se orgulhoso de possuir um Relógio SEIKO Analógico Cal. 5Y75. Para obter
os melhores resultados, leia atentamente as instruções contidas neste opúsculo antes de usar
o seu Relógio SEIKO Analógico. Conserve este manual para referências futuras.
CONTENTS
Page
FEATURES ..................................................................................................................
DISPLAY AND CROWN OPERATION .........................................................................
HOW TO CHARGE AND START THE WATCH ...........................................................
CHARGING/RECHARGING INFORMATION ...............................................................
ENERGY DEPLETION FOREWARNING FUNCTION ...................................................
REMARKS ON USING SOLAR WATCHES .................................................................
REMARKS ON THE CAPACITOR ................................................................................
HOW TO USE .............................................................................................................
TO PRESERVE THE QUALITY OF YOUR WATCH ......................................................
SPECIFICATIONS ........................................................................................................

SEIKO ANALOGUE QUARTZ
Cal. 5Y75
FEATURES
The SEIKO Quartz Watch Cal. 5Y75 is an analogue watch powered by a solar cell. It is
equipped with quick-start and energy depletion forewarning functions to ensure
constant operation of the watch.
■TIME
Three-hand indication.
■CALENDAR
Date is displayed in numerals.
■SOLAR CELL
The solar cell converts light energy into electrical energy, thus powering the watch.
■CAPACITOR
Makes use of a capacitor to store and discharge solar energy, unlike other solar watches
that use less efficient back-up batteries requiring replacement.
■QUICK-START FUNCTION
Even when the watch is left uncharged and the capacitor is completely drained, the
watch starts operating in a few seconds once exposed to light.
■ENERGY DEPLETION FOREWARNING FUNCTION
When the energy in the capacitor is reduced to an extremely small amount, the second
hand starts moving at two-second intervals to indicate that the watch needs recharging.

DISPLAY AND CROWN OPERATION
(a) Normal position : Free
(b) First click:
Clockwise : Date setting
Counterclockwise : Free
(c) Second click : Time setting
HOW TO CHARGE AND START THE WATCH
Even when the watch completely stops operating, it resumes operation once exposed
to light.
Keep the watch
exposed to light.
<One-second interval operation><Two-second interval operation>
Normal operation
1. The watch is equipped with a quick-start function. To start the watch, expose the
watch to sunlight or light of more than 3000 luxes (60W incandescent light at a
distance of 6 to 12 cm (2.5 to 5 inches), and the second hand starts moving at two-
second intervals in a few seconds.
2. Keep the watch exposed to light until the second hand moves at one-second
intervals; otherwise the watch may stop if the light source is removed.
Second hand
Hour hand
Minute hand
Date Second hand
Crown
a b c

Notes:
1. The charging time required varies with the intensity of light. (Refer to the table in
“CHARGING/RECHARGING INFORMATION”)
2. When the watch is fully charged, it will keep operating for approximately 3 days.
3. It is recommended that you keep the watch charged by exposing it to an appropriate
light source from time to time, rather than letting it run down fully before recharging.
4. The watch is equipped with a system to prevent overcharge. Even if it is further
exposed to light after being fully charged, no malfunction will result.
5. It is recommended that the watch be fully recharged before time setting is attempted.
Charging environment and time required
Sunlight
Fluorescent
light
500 6 hr. 16 hr. 2 hr.
1,000 3 hr. 8 hr. 55 min.
3,000 1 hr. 2.8 hr. 20 min.
Charging Time Required
To maintain
one-day
usage
Sunlight
(Cloudy day)
Sunlight
(Fine day in summer)
Incandes-
cent light
CHARGING/RECHARGING INFORMATION
For full
charge
For one-second
interval
operation
Illumination
(Lux)
Light Source
Distance between
light and watch
Type of light
60W x 1 60 cm (2 ft.)
15W x 2 70 cm (2 ft. 4 in.)
15W x 2 20 cm (8 in.)
5,000 50 min. 1.7 hr. 15 min.
15W x 2 12 cm (5 in.)
10,000 20 min. 1 hr. 8 min.15W x 2 3 cm (1.2 in.)
10,000 20 min. 1 hr. 8 min.
100,000 3 min. 16 min. 1.5 min.
Most offices 700 5 hr. 10 hr. 1.4 hr.

Notes:
1. The table above provides a general guideline of the relationship between the light
source and the charging time required, which may vary slightly depending on the
model.
2. When charging the watch, do not place it too close to hot light sources or expose it
to direct sunlight for a long time, as a malfunction will result if the watch temperature
exceeds 50°C (122°F).
ENERGY DEPLETION FOREWARNING FUNCTION
When the energy retained in the capacitor is reduced to an extremely low level, the
second hand starts moving at two-second intervals to indicate that the watch needs
recharging.
In this case, immediately expose the watch to sunlight or strong artificial light and keep
recharging it until the second hand moves at one-scond intervals.
<One-second interval operation><Two-second interval operation>
Note: When the second hand starts moving at two-second intervals, the watch will
stop operating in about 15 hours.
Expose the watch
to light.
Normal operation
Second hand

REMARKS ON USING SOLAR WATCHES
•Wear the watch in such a manner that it is not covered by the cuff of your shirt or
jacket. The second hand keeps moving at one-second intervals as long as it is
exposed to light.
•Whenever possible, leave the watch in a bright place if you are not wearing it.
•To prevent a watch whose second hand is moving at two-second intervals from
stopping during the night, leave it under a fluorescent light while you sleep. Then
follow the instructions on page 11 if it is still not moving at one-second intervals the
next day.
REMARKS ON THE CAPACITOR
•Earlier solar watches relied on both the solar cell and a back up silver-oxide battery
to keep the movement working. This meant that it was still necessary to change the
back-up battery after several years. Now, however, a capacitor, which needs no
replacement, takes the place of the back-up battery, making battery replacement
completely unnecessary.
•Never insert a silver oxide battery in place of the capacitor as the watch will not
operate.
TIME SETTING
Notes:
1. When setting the hour hand, check that AM/PM is correctly set. The watch is so
designed that the date changes once in 24 hours. Turn the hands past the 12 o’clock
marker to determine whether the watch is set for the A.M. or P.M. period. If the date
changes, the time is set for the A.M. period. If the date does not change, the time is
set for the P.M. period.
2. When setting the minute hand, advance it 4 to 5 minutes ahead of the desired time
and then turn it back to the exact minute.
a) Normal position
b) First click
c) Second click
1. Pull out the crown all the way to the second click
when the second hand is at the 12 o’clock position.
2. Turn the crown to set the hour and minute hands to
the desired time.
3. Push the crown back in to the normal position in
accordance with a time signal.
a b cCrown

Note: Do not set the date between 9:00 p.m. and 1:00 a.m. as the date may not change
properly. If it is necessary to set the date during that time period, first move the
hands so that the time shown is either before or after this period, adjust the date
and then reset the correct time.
1. Pull out the crown to the first click.
2. Turn the crown clockwise until the previous day’s
date appears.
3. Pull out the crown to the second click, and advance
the hour and minute hands until the desired time
and date appear.
4. Push the crown back in to the normal position.
DATE SETTING
a) Normal position
b) First click
TO PRESERVE THE QUALITY OF YOUR WATCH
■WATER RESISTANCE
•Non-water resistance
If “WATER RESISTANT” is not inscribed on the case back, your
watch is not water resistant, and care should be taken not to get it
wet as water may damage the movement. If the watch becomes
wet, we suggest that you have it checked by an AUTHORIZED SEIKO
DEALER or SERVICE CENTER.
•Water resistance (3 bar)
If “WATER RESISTANT” is inscribed on the case back, your watch
is designed and manufactured to withstand up to 3 bar, such as
accidental contact with splashes of water or rain, but it is not
designed for swimming or diving.
•Water resistance (5 bar)*
If “WATER RESISTANT 5 BAR” is inscribed on the case back, your
watch is designed and manufactured to withstand up to 5 bar and
is suitable for swimming, yachting and taking a shower.
•Water resistance (10 bar/15 bar)*
If “WATER RESISTANT 10 BAR” or “WATER RESISTANT 15 BAR”
is inscribed on the case back, your watch is designed and
manufactured to withstand up to 10 bar/15 bar and is suitable for
taking a bath and shallow diving, but not for scuba diving. We
recommend that you wear a SEIKO Diver’s watch for scuba diving.
Date
Crown
a b

* Before using the water resistance 5, 10, or 15 bar watch in water,
be sure the crown is pushed in completely.
Do not operate the crown when the watch is wet or in water.
If used in sea water, rinse the watch in fresh water and dry it
completely.
* When taking a shower with the water resistance 5 bar watch, or
taking a bath with the water resistance 10 or 15 bar watch, be sure
to observe the following:
• Do not operate the crown when the watch is wet with soapy
water or shampoo.
• If the watch is left in warm water, a slight time loss or gain may
be caused. This condition, however, will be corrected when the
watch returns to normal temperature.
NOTE:
Pressure in bar is a test pressure and should not be considered as
corresponding to actual diving depth since swimming movement tends
to increase the pressure at a given depth. Care should also be taken
on diving into water.
■TEMPERATURES
Your watch works with stable accuracy between a temperature range
of 5°C and 35°C (41°F and 95°F).
Do not leave your watch in very low temperatures below –5°C (+23°F)
for a long time since the cold may cause a slight time loss or gain.
However, the above conditions will be corrected when the watch re-
turns to normal temperature.
■SHOCKS & VIBRATION
Light activities will not affect your watch, but be careful not to drop
your watch or hit it against hard surfaces, as this may cause damage.
■MAGNETISM
Your watch will be adversely affected by strong magnetism. Keep it
away from close contact with magnetic objects.
■CHEMICALS
Be careful not to expose the watch to solvents (e.g., alcohol and
gasoline), mercury (i.e., from a broken thermometer), cosmetic spray,
detergents, adhesives or paints. Otherwise, the case, bracelet, etc.
may become discolored, deteriorated or damaged.
■CARE OF CASE AND BRACELET
To prevent possible rusting of the case and bracelet caused by dust,
moisture and perspiration, wipe them periodically with a soft dry cloth.