Casio 4739 Operation Manual Download Page 4

Operation Guide 4739

4

To set the current digital time and date manually

1. In the Timekeeping Mode, hold down 

A

 until the city

code starts to flash, which indicates the setting screen.

2. Press 

C

 to move the flashing in the sequence shown

below to select other settings.

l l l

ll

ll

ll

ll

ll

ll

ll

l l l l

City code

3. When the setting you want to change is flashing, use 

D

 to change it as described

below.

Screen:

To do this:

Change the city code

Cycle between Daylight Saving Time
(

ON

), Standard Time (

OFF

), and

Auto DST (

AUTO

)

Toggle between 12-hour (

12H

) and

24-hour (

24H

) timekeeping

Do this:

Press 

D

 (east).

Press 

D

.

Press 

D

.

Seconds

Hour

12/24-Hour 
Format

Minutes

Year

DST

Day

Month

City Code

Power
Saving

Reset the seconds to 

00

Change the hour or minutes

Change the year

Change the month or day

Toggle Power Saving on (

PSON

)

and off (

PSOF

)

Press 

D

.

Press 

D

 (+).

Press 

D

.

See “City Code Table” for a complete list of available city codes.

Auto DST (

AUTO

) can be selected only while 

LIS

LON

MAD

PAR

ROM

BER

,

STO

ATH

MOW

HKG

BJS

TPE

SEL

TYO

HNL

ANC

YVR

LAX

YEA

DEN

,

MEX

YWG

CHI

MIA

YTO

NYC

YHZ

, or 

YYT

 is selected as the Home City code.

For more information, see “Daylight Saving Time (DST)” below.

For information about settings other than the time and date, see the following.

Power Saving: Power Saving Function

4. Press 

A

 to exit the setting screen.

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), Anthorn
(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.

The time calibration signals transmitted from Fukushima and Fukuoka/Saga (Japan)
do not include summer time data.

The default DST setting is Auto DST (

AUTO

) whenever you select 

LIS

LON

MAD

,

PAR

ROM

BER

STO

ATH

MOW

HKG

BJS

TPE

SEL

TYO

HNL

ANC

YVR

,

LAX

YEA

DEN

MEX

YWG

CHI

MIA

YTO

NYC

YHZ

, or 

YYT

 as your Home City

code.

If you experience problems receiving the time calibration signal in your area, it is
probably best to switch between Standard Time and Daylight Saving Time (summer
time) manually.

To change the Daylight Saving Time (summer time) setting

1. In the Timekeeping Mode, hold down 

A

 until the city code starts to flash, which

indicates the setting screen.

2. Press 

C

 once and the DST setting screen appears.

3. Use 

D

 to cycle through the DST settings in the sequence shown below.

4. When the setting you want is selected, press 

A

 to exit the setting screen.

The 

DST

 indicator appears on the display to indicate that Daylight Saving Time is

turned on.

Auto DST (

AUTO

)

DST off (

OFF

)

DST on (

ON

)

Analog Timekeeping

The analog time of this watch is synchronized with the digital time. The analog time
setting is adjusted automatically whenever you change the digital time.

Note

The hands for the analog timepiece move to adjust to a new setting whenever any of
the following occurs.

When you change the digital time setting manually
When the digital time setting is changed by time calibration signal reception
When you change the Home City code and/or DST setting

If the analog time does not match the digital time for any reason, use the procedure
described under “To adjust the analog time” to match the analog setting to the digital
setting.

Whenever you need to adjust both the digital and the analog time settings manually,
make sure you adjust the digital setting first.

Depending on how much the hands have to move in order to adjust to the digital
time, it may take some time before they stop moving.

To adjust the analog time

1. In the Timekeeping Mode, press 

C

 six times to enter

the Hand Setting Mode.

2. Hold down 

A

 until the current digital time starts to

flash, which indicates the setting screen.

3. Use 

D

 and 

B

 to adjust the analog setting as

described below.

When you want to do this:

Move the hand setting
forward 20 seconds
Move the hand setting a short
way forward at high speed

Perform this button operation:

Press 

D

.

Hold down 

D

.

Release 

D

 when the hands reach the setting

you want.

ll

ll

lll

ll

ll

l l

Move the hand setting a
long way forward at high
speed

While holding down 

D

 to move the hands at

high speed, press 

B

 to lock the high-speed

hand movement.

To stop the hand movement, press any
button.

Hand movement stops automatically if the hour
hand makes one full (12-hour) revolution.

4. Press 

A

 to exit the setting screen.

The minute hand will be adjusted slightly to match the seconds when you exit the
setting screen.

To return to the Timekeeping Mode, press 

C

.

Power Supply

This watch is equipped with a solar cell and a special rechargeable battery (secondary
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 only partially
covered.

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. Make sure that the watch is normally exposed to bright light
whenever possible.

This watch uses a special 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 special rechargeable battery to charge fully, contact your dealer
or CASIO distributor about having it replaced.

Never try to remove or replace the watch’s special 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.

To check the current battery level

In the Timekeeping Mode, press 

C

 to display the battery level indicator.

Battery level indicator

Function Status

All functions enabled.

All functions enabled.

Alarm, hourly time signal, illumination and
time calibration signal reception disabled.

All functions disabled.

All functions, including timekeeping,
disabled and initialized.

Level

1

2

3

4

5

Battery Level Indicator

(Charge Soon Alert)

(Charge Soon Alert)

The battery level indicator shows you the current power level of the rechargeable battery.

ll

lll

llll

ll

ll

lll

llll

ll

The flashing Low indicator (

L

) at Level 3 and the flashing charge indicator (

C

) at

Level 4 tell 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. Functions are enabled once again after the rechargeable battery is
charged, but you need to set the time and date, after the battery reaches Level 4
(indicated by the flashing charge indicator (

C

)) from Level 5. You will not be able to

configure any of the other settings until the battery reaches Level 3 (no charge
indicator) after dropping to Level 5.

Summary of Contents for 4739

Page 1: ...gnal You can also 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 the city where you normally will use the watch For more information see To specify your Home City Minute hand Hour hand Month Day When using the watch outside the areas covered by the time signal transmitters you will have to ad...

Page 2: ...he Timekeeping Mode or World Time Mode Reception is not performed if a calibration time is reached while you are configuring settings Auto receive of the calibration signal is designed to be performed early in the morning while you sleep provided that the Timekeeping Mode time is set correctly Before going to bed for the night remove the watch from your wrist and put it in a location where it can ...

Page 3: ...ons in this section are performed in the Stopwatch Mode which you enter by pressing C Minutes Seconds D Start Stop Elapsed Time Re start Clear D Stop D D A Split Time D Start Split Split release Clear A Stop A D A Two Finishes D Start Split Stop Clear A Split release D A A First runner finishes Display time of first runner Second runner finishes Display time of second runner To measure times with ...

Page 4: ...imekeeping Mode press C six times to enter the Hand Setting Mode 2 Hold down A until the current digital time starts to flash which indicates the setting screen 3 Use D and B to adjust the analog setting as described below When you want to do this Move the hand setting forward 20 seconds Move the hand setting a short way forward at high speed Perform this button operation Press D Hold down D Relea...

Page 5: ...the Alarm or Hand Setting Mode or with the battery level indicator displayed for two or three minutes without performing any operation it automatically returns to the Timekeeping Mode If you leave the watch with a flashing setting on the display for two or three minutes without performing any operation the watch automatically exits the setting screen l l l l l l l l ll l l l l l l l l l l l l l l ...

Page 6: ...mitting diode Other Battery level indicator Power Saving Power Supply Solar cell and a rechargeable battery Approximate Battery Operating Time 12 months from full charge to Level 4 when the watch is not exposed to light under the following conditions Display on 18 hours per day sleep state 6 hours per day 1 illumination operation 1 5 seconds per day 10 seconds of alarm operation per day 10 minutes...

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