Illumination, Power supply, Operation guide 3192 – G-Shock G-2300EB-7 User Manual

Page 3

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Operation Guide 3192

3

To use the countdown timer

Press D while in the Countdown Timer Mode to start the
countdown timer.

• The countdown timer operation continues even if you

exit the Countdown Timer Mode.

• Press D while a countdown operation is in progress to

pause it. Press D again to resume the countdown.

• To stop a countdown operation completely, first pause it

(by pressing D), and then press B. This returns the
countdown time to its starting value.

Countdown End Beeper

The countdown end beeper lets you know when the countdown reaches zero. The
beeper stops after about 10 seconds or when you press any button.

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Current timer time

Countdown start time

Illumination

This watch has an EL (electro-luminescent) panel that
causes the entire display to glow for easy reading in the
dark. The watch’s auto light switch turns on illumination
automatically when you angle the watch toward your face.

• The auto light switch must be turned on (indicated by

the auto light switch on indicator) for it to operate.

• See “Illumination Precautions” for other important

information about using illumination.

To illuminate the display manually

In any mode, press L to turn on illumination.

• The above operation turns on illumination regardless of

the current auto light switch setting.

• You can use the procedure below to select either 1.5 seconds or 3 seconds as the

illumination duration. When you press L, the illumination will remain on for about
1.5 seconds or 3 seconds, depending on the current illumination duration setting.

Auto light switch on
indicator

To specify the illumination duration

1. In the Timekeeping Mode, hold down A until the

display contents start to flash. This is the setting screen.

2. Press C 10 times to display the current illumination

duration (

or

).

3. Press D to toggle the setting between

(1.5 seconds)

and

(three seconds).

4. Press A to exit the setting screen.

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About the Auto Light Switch

Turning on the auto light switch causes illumination to turn on, whenever you position
your wrist as described below in any mode. Note that this watch features a “Full Auto
EL Light”, so the auto light switch operates only when available light is below a certain
level. It does not turn on the backlight under bright light.

Moving the watch to a position that is parallel to the ground and then tilting it toward
you more than 40 degrees causes illumination to turn on.

• Wear the watch on the outside of your wrist.

Parallel to
ground

More than 40°

Warning!

••••• Always make sure you are in a safe place whenever you are reading the

display of the watch using the auto light switch. Be especially careful when
running or engaged in any other activity that can result in accident or injury.
Also take care that sudden illumination by the auto light switch does not
startle or distract others around you.

••••• When you are wearing the watch, make sure that its auto light switch is turned

off before riding a bicycle or operating a motorcycle or any other motor
vehicle. Sudden and unintended operation of the auto light switch can create a
distraction, which can result in a traffic accident and serious personal injury.

To turn the auto light switch on and off

In the Timekeeping Mode, hold down L for about three seconds to toggle auto light
switch on (indicator

is shown on the display) and off.

• The auto light switch on indicator (

) is shown on the display in all modes while

the auto light switch is turned on.

Power Supply

This watch is equipped with a solar cell and a rechargeable battery that is charged by
the electrical power produced by the solar cell. The illustration shown below shows
how you should position the watch for charging.

Example: Orient the watch so its face is

pointing at a light source.

• The illustration shows how to position

a watch with a resin band.

• Note that charging efficiency drops

when any part of the solar cell is
blocked by clothing, etc.

• You should try to keep the watch

outside of your sleeve as much as
possible. Charging is reduced
significantly if the face is covered only
partially.

Solar cell

Important!

• Storing the watch for long periods in an area where there is no light or wearing it in

such a way that it is blocked from exposure to light can cause rechargeable battery
power to run down. Be sure that the watch is exposed to bright light whenever
possible.

Battery Power Indicator and Recover Indicator

The battery power indicator on the display shows you the current status of the
rechargeable battery’s power.

Level

1

2

3

4

5

Battery Power Indicator

(Charge Soon Alert)

Function Status

All functions enabled.

All functions enabled.

Illumination, and beeper
disabled.

Except for the CHG (charge)
indicator, all functions and
display indicators disabled.

All functions disabled.

Battery power
indicator

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• The flashing

indicator at Level 3 tells you that battery power is very low, and

that exposure to bright light for charging is required as soon as possible.

• At Level 5, all functions are disabled and settings return to their initial factory

defaults. Once the battery reaches Level 2 after falling to Level 5, reconfigure the
current time, date and other settings.

• The watch’s Home City code setting will change automatically to TYO (Tokyo)

whenever the battery drops to Level 5 or when you have the rechargeable battery
replaced.

• Display indicators reappear as soon as the battery is charged from Level 5 to

Level 2.

• Leaving the watch exposed to direct sunlight or some other very strong light source

can cause the battery power indicator to show a reading temporarily higher than the
actual battery level. The correct battery level should be indicated after a few minutes.

• Performing illumination or beeper operations during a

short period may cause

(recover) to appear on the

display. Illumination, alarm, countdown timer alarm and
hourly time signal will be disabled until battery power
recovers.
After some time, battery power will recover and
(recover) will disappear, indicating that the above
functions are enabled again.

• If

(recover) appears frequently, it probably means

that remaining battery power is low. Leave the watch in
bright light to allow it to charge.

Charging Precautions

Certain charging conditions can cause the watch to become very hot. Avoid leaving
the watch in the areas described below whenever charging its rechargeable battery.
Also note that allowing the watch to become very hot can cause its liquid crystal
display to black out. The appearance of the LCD should become normal again when
the watch returns to lower temperature.

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Recover indicator

Warning!
Leaving the watch in bright light to charge its rechargeable battery can cause it
to become quite hot. Take care when handling the watch to avoid burn injury.
The watch can become particularly hot when exposed to the following
conditions for long periods.

• On the dashboard of a car parked in direct sunlight

• Too close to an incandescent lamp

• Under direct sunlight

Charging Guide
After a full charge, timekeeping remains enabled for up to about 11 months.

• The following table shows the amount of time the watch needs to be exposed to light

each day in order to generate enough power for normal daily operations.

• For details about the battery operating time and daily operating conditions, see the

“Power Supply” section of the Specifications.

• Stable operation is promoted by frequent exposure to light.

Exposure Level (Brightness)

Outdoor Sunlight (50,000 lux)
Sunlight Through a Window (10,000 lux)
Daylight Through a Window on a Cloudy Day (5,000 lux)
Indoor Fluorescent Lighting (500 lux)

Approximate

Exposure Time

5 minutes
24 minutes
48 minutes
8 hours

Recovery Times
The table below shows the amount exposure that is required to take the battery from
one level to the next.

Approximate Exposure Time

Level 5

Level 4

Level 3

Level 2

Level 1

2 hours

20 hours

6 hours

8 hours

98 hours

27 hours

15 hours

200 hours

54 hours

170 hours

- - - - - - - -

- - - - - - - -

Exposure Level
(Brightness)

Outdoor Sunlight
(50,000 lux)
Sunlight Through a
Window (10,000 lux)
Daylight Through a
Window on a Cloudy
Day (5,000 lux)
Indoor Fluorescent
Lighting (500 lux)

• The above exposure time values are all for reference only. Actual required exposure

times depend on lighting conditions.

• This watch uses a rechargeable battery to store power produced by the solar cell, so

regular battery replacement is not required. However, after very long use, the
rechargeable battery may lose its ability to achieve a full charge. If you experience
problems getting the rechargeable battery to charge fully, contact your dealer or
CASIO distributor about having it replaced.

• Never try to remove or replace the watch’s rechargeable battery yourself. Use of the

wrong type of battery can damage the watch.

• The current time and all other settings return to their initial factory defaults whenever

battery power drops to Level 5 and when you have the battery replaced.

• Turn on the watch’s Power Saving function and keep it in an area normally exposed

to bright light when storing it for long periods. This helps to keep the rechargeable
battery from going dead.

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