Operation Guide 4765
Timekeeping
Use the Timekeeping Mode to set and view the current time and date. This section also explains how to manually set the current date and time.
•When setting the time, you can also configure settings for the illumination duration and the
•All of the operations in this section are performed in the Timekeeping Mode, which you can enter by pressing C.
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Month | Seconds | PM indicator | Day of week |
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▲Hour : Minutes
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•Pressing Din the Timekeeping Mode will display the Last Signal screen.
Last Signal Screen
▲ | Press D. |
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Setting the Digital Time and Date Manually
Make sure you select your Home City code before you change the current time and date settings. World Time Mode times are all displayed in accordance with the Timekeeping Mode settings. Because of this, World Time Mode times will not be correct if you do not select the proper Home City code before setting the time and date in the Timekeeping Mode.
To set the current digital time and date manually
City code |
| 1. In the Timekeeping Mode, hold down Auntil the city | ||||
| code starts to flash, which indicates the setting screen. | |||||
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| 2. Press Cto move the flashing in the sequence shown | ||||
| below to select other settings. |
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| City Code | DST | Seconds | Hour | ||
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| Power | Day | Month | Year | Minutes | |
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3.When the setting you want to change is flashing, use D to change it as described below.
Screen: | To do this: | Do this: |
| Change the city code | Press D(east). |
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| Cycle between Daylight Saving Time | Press D. |
| (ON), Standard Time (OFF), and |
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| Auto DST (AUTO) |
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| Toggle between | Press D. |
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| Reset the seconds to 00 | Press D. |
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| Change the hour or minutes | Press D(+). |
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| Change the year |
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| Change the month or day |
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| Toggle Power Saving on (PSON) | Press D. |
| and off (PSOF) |
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•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 Ato 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), 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.
•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 Auntil the city code starts to flash, which indicates the setting screen.
2.Press Conce and the DST setting screen appears.
3.Use Dto cycle through the DST settings in the sequence shown below.
Auto DST (AUTO) |
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| DST off (OFF) |
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| DST on (ON) |
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4. When the setting you want is selected, press Ato exit the setting screen.
•The DST indicator () appears on the display to indicate that Daylight Saving Time is turned 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 Csix times to enter | ||||||
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| l | 2. Hold down Auntil the current digital time starts to | |||
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| 3. Use Dand Bto adjust the analog setting as | ||
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| When you want to do this: | Perform this button operation: | |||||
| Move the hand setting |
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| forward 20 seconds |
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| Move the hand setting a short | • Hold down D. | |||||
| way forward at high speed |
| • Release Dwhen the hands reach the setting | ||||
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| Move the hand setting a |
| • While holding down Dto move the hands at | ||||
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| high speed, press Bto lock the | ||||
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| • To stop the hand movement, press any |
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| • Hand movement stops automatically if the hour |
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4. Press Ato 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 | Solar cell |
is pointing at a light source. |
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•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.
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
Press Cto display the battery level indicator.
Battery level indicator
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