Operation Guide 4766
1
MO0706-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.
••
••
• This watch does not have a city code that corresponds to the Greenwich
Mean Time differential of –3.5 hours. Because of this, the radio-controlled
atomic timekeeping function will not display the correct time for
Newfoundland, Canada.
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Bright light
Solar cell
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. Even if the face of the watch is
blocked only partially from light, charging will be reduced
significantly.
• 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
Charge
Solar cell
(Converts light to
electrical power.)
Rechargeable battery
LEVEL 1
LEVEL 2
LEVEL 3
All
functions
disabled.
All functions disabled,
except for analog timekeeping
and stopwatch .
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.
• Be sure to read “Power Supply” for important information you need to know
when exposing the watch to bright light.
If the analog hands aren’t moving...
If the analog hands aren’t moving, it means that the power saving mode has stopped
them to save battery power.
• See “Power Saving” for more information.
• The hands also stop whenever the battery level reaches Level 3.
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About This Manual
• 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.
Hour hand
Minute hand
Date
Second hand
Stopwatch second hand
24-hour hand
Day of the
week hand
3
0
3
0
3
0
Stopwatch ModeTimekeeping ModeWorld Time Mode
Press
B or D.
Press D.
(When the stopwatch
is reset to all zeros.)
Press C.
▲
▲
General Guide
30
30
30
30
Manual Receive Receive Status Check
Transmitter Change
Timekeeping Mode
▲
▲
Press any button.
Hold down A
for about two seconds.
▲
▲
Press A.
Hold down A
for about five seconds.
Press A.
Time/Date Adjustment
▲
▲
▲
▲
• About 1.5 seconds after you enter the World Time Mode from the Timekeeping
Mode, the watch’s hands will start to move to the time setting for the World Time
Mode. All button operations are disabled while the hands are moving.
Radio-controlled Atomic Timekeeping
This watch receives a time calibration signal and updates its time setting accordingly.
• Supported time calibration signals: Germany (Mainflingen), England (Rugby), United
States (Fort Collins), Japan (Fukushima or Fukuoka/Saga).
• See the information under “Signal Reception Troubleshooting” if you experience
problems with time calibration signal reception.
Current Time Setting
This watch adjusts its time setting automatically in accordance with a time calibration
signal. You also can perform a manual procedure to set the time and date, when
necessary.
• The first thing you should do after purchasing this watch is to specify your
Home City, which is the city where you will normally use the watch. For more
information, see “To specify your Home City”.
• When using the watch outside the areas covered by the time signal transmitters, you
will have to adjust the current time setting manually as required. See
“Timekeeping”
for more information about manual time settings.
• The U.S. time calibration signal can be picked up by the watch while in North
America. The term “North America” in this manual refers to the area that consists of
Canada, the continental United States, and Mexico.
To specify your Home City
1. In the Timekeeping Mode, hold down A for about five
seconds until the stopwatch second hand moves to the
city code of the currently selected Home City. This
indicates the watch is in the setting mode.
2. Use D to change the Home City setting.
• Each press of D causes the stopwatch second hand
to advance clockwise to the next city code.
• All hands (except for the second hand) and the date
display will change automatically to the applicable
settings for the currently selected city code. All button
operations are disabled while the hands and date
display are changing.
• Time calibration signal reception is supported when
any one of the city codes shown in the table below is
selected as your Home City.
30
City codeStopwatch
second hand
• In addition to the above, you also can select city codes that are outside the ranges
of the time calibration signal transmitters supported by this watch.
• Note that this watch does not have a city code that corresponds to Newfoundland.
3. After the Home City setting is the way you want, press A to return to the
Timekeeping Mode.
• Normally, your watch should show the correct time as soon as you specify your
Home City code. If it does not, it should adjust automatically after the next auto
receive operation. You also can perform manual receive or you can set the time
manually.
German/U.K. Signal Japan Signal U.S. Signal
City
Code
LON
PAR
ATH
City Name
London
Paris
Athens
City
Code
HNL
ANC
LAX
City Name
Honolulu
Anchorage
Los Angeles
City
Code
DEN
CHI
NYC
City Name
Denver
Chicago
New York
City
Code
HKG
TYO
City Name
Hong Kong
Tokyo
• Even if the time calibration signal is received correctly, there are some times when
the analog hands may not indicate the correct time. If this happens, use the
procedures under “Adjusting the Home Positions” to check the home positions of the
hands, and make adjustments as required.
• You can also change the Home City setting by swapping the current Home City and
the currently selected World Time City. For details, see “Swapping your Home City
and World Time City”.
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use Daylight
Saving Time.
The time calibration signals transmitted from Mainflingen (Germany), Rugby
(England), or Fort Collins (the United States) include both Standard Time and DST
data. When the Auto DST setting is turned on, the watch switches between Standard
Time and DST (summer time) automatically in accordance with the signals.
• Though the time calibration signal transmitted by the Fukushima and Fukuoka/Saga,
Japan transmitters include summer time data, summer time currently is not
implemented in Japan (as of 2007).
• The default DST setting is Auto DST (AUTO/AT) whenever you select LON, PAR,
ATH , ANC, LAX, DEN, CHI, NYC, or TYO as your Home City code.
• If you experience problems receiving the time calibration signal in your area, it
probably is best to switch between Standard Time and Daylight Saving Time
(summer time) manually. For more information, see “To set the time and date
manually”.
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