Casio 3023 Operation Manual Download Page 1

Operation Guide 3023

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MO060

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-EA

Getting Acquainted

Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to read this manual carefully.

Keep the watch exposed to bright light

The electricity generated by the solar cell of the watch is
stored by a built-in battery. Leaving or using the watch
where it is not exposed to light causes the battery to run
down. Make sure the watch is exposed to light as much as
possible.

When you are not wearing the watch on your wrist,
position the face so it is pointed at a source of bright
light.

You should try to keep the watch outside of your sleeve
as much as possible. Charging is reduced significantly if
the face is only partially covered.

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Bright Light

Solar cell

The watch continues to operate, even when it is not exposed to light. Leaving the
watch in the dark can cause the battery to run down, which will cause some watch
functions to be disabled. If the battery goes dead, you will have to re-configure watch
settings after recharging. To ensure normal watch operation, be sure to keep it
exposed to light as much as possible.

Bright Light

Electrical 
energy

All 
functions
enabled

LEVEL 1

LEVEL 2

LEVEL 3

LEVEL 4

Charge

Solar cell
(Converts light to 
electrical power.)

Rechargeable battery

LEVEL 1

LEVEL 2

LEVEL 3

LEVEL 4

Some 
functions 
disabled

Dis-

charge

Battery charges in the light.

Battery discharges in the dark.

The actual level at which some functions are disabled depends on the watch model.

Frequent display illumination can quickly run down the battery and require charging.
The following guidelines give an idea of the charging time required to recover from a
single illumination operation.

Approximately 5 minutes exposure to bright sunlight coming in through a window
Approximately 50 minutes exposure to indoor fluorescent lighting

Be sure to read “Power Supply” for important information you need to know
when exposing the watch to bright light.

If the display of the watch is blank...

If the display of the watch is blank, it means that the watch’s Power Saving function
has turned off the display to conserve power.

See “Power Saving Function” for more information.

About This  Manual

Depending on the model of your watch, display text
appears either as dark figures on a light background, or
light figures on a dark background. All sample displays
in this manual are shown using dark figures on a light
background.

Button operations are indicated using the letters shown
in the illustration.

Each section of this manual provides you with the
information you need to perform operations in each
mode. Further details and technical information can be
found in the “Reference” section.

(Light)

(Light)

Alarm Mode

Countdown Timer  Mode

Stopwatch Mode

General Guide

Press 

B

 to change from mode to mode.

In any mode (except when a setting screen is on the display), press 

L

 to illuminate

the display.

Timekeeping Mode

Press 

B

.

World Time  Mode

Radio-controlled Atomic Timekeeping

This watch receives a time calibration signal and updates
its time setting accordingly. The time calibration signal
includes both Standard Time and Daylight Saving Time
(summer time) data.

This watch is designed to pick up the time calibration
signal transmitted from Fort Collins, Colorado (USA).
Reception is possible within North America

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.

*

The term “North America” in this User’s Guide refers to the
area that consists of Canada, the continental United States,
and Mexico.

Current Time  Setting

This watch adjusts its time setting automatically in
accordance with a time calibration signal. You can also
perform a manual procedure to set the time and date,
when necessary.

Month – Day

Hour : Minutes

DST indicator

Seconds

PM indicator

The first thing you should do after purchasing this watch is to set your Home City,
which is the city where you will use the watch normally. For more information, see
“To set your Home City” below.

When using the watch outside of the range of the transmitter in Fort Collins, you
need to adjust the time manually as required. See “Timekeeping” for information
about manual settings.

To set your Home City

1. In the Timekeeping Mode, hold down 

A

 until the city

code starts to flash, which indicates the setting screen.

2. Use 

C

(east) and 

L

(west) to select the city code you

want to use as your Home City.

The following are the city codes for major cities in
North America.

YVR

: Vancouver

LAX

: Los Angeles, San Francisco, Las Vegas,

Seattle/Tacoma, Tijuana

YEA

: Edmonton

DEN

: Denver, El Paso, Culiacan

MEX

: Mexico City

YWG

: Winnipeg

CHI

: Chicago, Houston, Dallas/Fort Worth,

New Orleans

MIA

: Miami

YTO

: Toronto

NYC

: New York, Detroit, Boston, Montreal

YHZ

: Halifax

YYT

: St. Johns

3. Press 

A

 to exit the setting screen.

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City code

Important!

Normally, your watch should show the correct time as soon as you select your Home
City code. If it does not, it should adjust automatically after the next auto receive
operation (in the middle of the night). You also can perform manual receive or you
can set the time manually.

If you are in an area that does not use Daylight Saving Time (summer time), turn off
the DST setting.

Time Calibration Signal Reception

There are two different methods you can use to receive the time calibration signal:
auto receive and manual receive.

Auto Receive

With auto receive, the watch picks up the time calibration signal automatically six
times a day at midnight, 1:00 a.m., 2:00 a.m., 3:00 a.m., 4:00 a.m., and 5:00 a.m.
For more information, see “About Auto Receive”.

Manual Receive

Manual receive lets you start a time calibration receive operation with the press of a
button. For more information, see “To perform manual receive”.

Important!

When getting ready to receive the time calibration signal, position the watch as
shown in the nearby illustration, with its 12 o’clock side facing towards a window.
Make sure there are no metal objects nearby.

Resin Band

Metal Band

The watch should not be on its side or facing the wrong way.

Proper signal reception can be difficult or even impossible under the conditions listed
below.

Inside or
among
buildings

Inside a
vehicle

Near
household
appliances or
office
equipment,
or a mobile
phone

Near a
construction
site, airport, or
other sources
of electrical
noise

Near high-
tension
power lines

Among or
behind
mountains

Summary of Contents for 3023

Page 1: ...pdates its time setting accordingly The time calibration signal includes both Standard Time and Daylight Saving Time summer time data This watch is designed to pick up the time calibration signal transmitted from Fort Collins Colorado USA Reception is possible within North America The term North America in this User s Guide refers to the area that consists of Canada the continental United States a...

Page 2: ...ation and return to the Timekeeping Mode press C If the receive operation is unsuccessful the message ERR appears on the display for about one or two minutes After that the watch returns to the Timekeeping Mode You can also change from the Last Signal or ERR screen to the normal timekeeping screen by pressing C To turn auto receive on and off 1 In the Timekeeping Mode press C to display the Last S...

Page 3: ... 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 ...

Page 4: ...keeping Do this Use C east and L west Press C Press C 3 When the setting you want to change is flashing use C and or L to change it as described below Reset the seconds to 00 Toggle the illumination duration setting between 1 5 seconds and 2 5 seconds Change the hour minutes or year Change the month or day Toggle Power Saving on and off Show or hide indicated by the date day of the week on the mai...

Page 5: ...l screen is the date data included in the received time calibration signal When only time data is received however the Last Signal screen shows the date as kept in the Timekeeping Mode at the time of signal reception If you are in an area where proper time calibration signal reception is impossible the watch keeps time within 20 seconds a month at normal temperature If you have problems with prope...

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