Bedienungsanleitung Seiko 7B75 (Seite 11 von 22) (Englisch)

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Charging the battery

■ How to charge the battery

Expose the dial to light to charge the watch.

To ensure optimal performance of the watch, make

sure that the watch is kept sufficiently charged at all

times.

Under the following situations, the energy of the

watch is likely to be depleted, resulting in stoppage

of the watch:

• The watch is concealed under a sleeve.

•

The watch is used or stored under conditions where

it cannot be exposed to light for a long time.

* Be careful to make sure that the watch does not get hot when it is charging. (The operating temperature range is

-10°C to +60°C.)

* When you first start using the watch or starting it after it stopped due to a lack of charge, charge the watch sufficiently

using the table on P.37 as a guide.

EN 36

SOLAR CHARGING FUNCTION

■ Guide to charging times

Charge the watch using the times below as a guide.

Illuminance

lx (LUX) Light source Condition (Example)

From the state where the watch is

stopped (Not charged)

In the state where

the hand moves (The

watch is charged)

Time required for

fully charging the

watch

Time required for

charging the watch

to start moving at

one-second

intervals

Time required for

charging the watch

to last for 1 day

700 Fluorescent

light General offices - - 4 hours

3,000 Fluorescent

light 30 W 20 cm 230 hours 6 hours 1 hour

10,000

Fluorescent

light 30 W 5 cm 60 hours 1.5 hours 15 minutes

Sunlight Cloudy day

100,000 Sunlight

Sunny day (Under the

direct sunlight on a

summer day)

30 hours 30 minutes 3 minutes

The figures of “Time required for charging the watch to start moving at one-second intervals” are estimations of

time required to charge the stopped watch by exposing it to light until it moves at steady one-second intervals.

Even if the watch is partially charged for a shorter period, the watch will resume one-second interval movement.

However, it may shortly return to two-second interval movement. Use the charging time in this column as a rough

guide for sufficient charging time.

* The seconds hand movement indicates the remaining amount of energy. “Checking the Charging Status” → P.14

* The required charging time slightly varies depending on the model of the watch.

EN 37

SOLAR CHARGING FUNCTION

About energy

■ Energy depletion forewarning function (Two-second

interval movement and Five-second interval movement)

The energy depletion forewarning function is activated when the energy stored in the watch runs low.

In such a case, the seconds hand moves at two-second intervals.

If the watch continues to be in the state of two-second interval movement, the watch switches to five-second

interval movement, followed by a completely stopped state.

If the energy depletion forewarning function is activated, charge the watch sufficiently.

“How to charge the battery” → P.36

“Guide to charging times” → P.37

* Neither the button nor the crown can be operated while the seconds hand moves at two-second or five-second

intervals. (This is not a malfunction.)

* While the seconds hand moves at five-second intervals, the hour and minute hands, as well as the date, stop

operating.

* While the seconds hand moves at five-second intervals, the automatic reception function and manual reception

function will not work. After the watch is charged sufficiently and the seconds hand returns to normal one-second

interval movement, conduct the manual reception of radio signals to set the watch to the correct time. (“Automatic

reception and manual reception” → P.17)

EN 38

SOLAR CHARGING FUNCTION

■ Power save function

This watch is equipped with a power save function which can suppress energy consumption when it is left without receiving

an adequate light source for a certain length of time.

* There are two types of power save mode.

Power Save 1 Power Save 2

Condition The watch is exposed to a state without receiving an

adequate light source for 72 hours or longer.

The watch is in an insufficient charging state for a long

time.

Situation

The seconds hand

stops pointing at the

15-second position,

and the hour and

minute hands, and

date also stop.

The watch conducts

automatic radio signal

receiving.

The seconds hand

stops pointing at the

45-second position, and

the hour and minute

hands, and date also

stop.

The watch does not

conduct automatic radio

signal receiving.

* The date shows “1”.

How to

handle the

situation

When the watch is exposed to an adequate light source

for 5 seconds or longer, or the button is pressed, it

displays the current time again after the seconds hand

is rapidly advanced.

After sufficiently charging the battery, set the watch for

the current time, if necessary.

Power Save 2

* While the watch is being charged, the seconds hand moves at “Five-second Intervals.” During the “Five-second Interval Movement,”

neither the button nor the crown can be operated.

* If the “Power Save 2” mode is prolonged, the stored power amount drops and the internal current time information stored will be lost.

When the watch returns to its normal movement of one-second interval after sufficiently charging the battery, set the current time by

receiving a radio signal. (“Automatic reception and manual reception” → P.17)

EN 39

SOLAR CHARGING FUNCTION

Seiko 7B75 Seite 11

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