Operation Guide 3159
Countdown Timer
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| You can set the countdown timer within a range of one |
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| minute to 24 hours. An alarm sounds when the countdown |
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| reaches zero. |
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| • All of the operations in this section are performed in the |
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| Countdown Timer Mode, which you enter by pressing |
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Hours |
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| Minutes |
| Countdown End Beeper | |||
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| Seconds | The countdown end beeper lets you know when the | |
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| countdown reaches zero. The beeper stops after about 10 |
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| seconds or when you press any button. |
To configure the countdown timer | ||||||
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| 1. While the countdown start time is on the display in the |
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| Countdown Timer Mode, hold down Auntil the current | ||
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| countdown start time starts to flash, which indicates the | |||
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| • If the countdown start time is not displayed, use the | ||||
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| procedure under “To use the countdown timer” to | ||
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display it.
2. Press Cto move the flashing between the hour and minute settings.
3. When a setting is flashing, use D (+) and B
• To specify a countdown start time of 24 hours, set
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4. Press Ato exit the setting screen.
To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer.
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| • The countdown timer operation continues even if you |
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| exit the Countdown Timer Mode. | |
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| • Press Dwhile a countdown operation is in progress to | |
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| pause it. Press Dagain to resume the countdown. |
• To stop a countdown operation completely, first pause it (by pressing D), and then press A. This returns the countdown time to its starting value.
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 | Solar cell |
pointing at a light source. |
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• The illustration shows how to position a |
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watch with a resin band. |
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• Note that charging efficiency drops when |
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any part of the solar cell is blocked by |
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clothing, etc. |
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•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.
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.
•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.
•All data stored in memory is deleted, and 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.
Battery Power Indicator and Recover Indicator
The battery power indicator on the display shows you the current status of the rechargeable battery’s power.
Illumination
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| This watch has an EL | |
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| causes the entire display to glow for easy reading in the | |
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| dark. The watch’s auto light switch turns on illumination | |
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| automatically when you angle the watch towards your | |
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| face. | |
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| • The auto light switch must be turned on (indicated by | |
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| the auto light switch on indicator) for it to operate. | |
Auto light switch on | |||
• See “Illumination Precautions” for other important | |||
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information about using illumination. | |||
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To illuminate the display manually
In any mode (except when a setting screen is on the display), press B to turn on illumination.
Level
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2
3
Battery power
indicator4
5
Battery Power Indicator
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(Charge Soon Alert)
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Function Status
All functions enabled.
All functions enabled.
Auto and manual receive, illumination, and beeper disabled.
Except for timekeeping and the CHG (charge) indicator, all functions and display indicators disabled.
All functions disabled.
•The above operation turns on illumination regardless of the current auto light switch setting.
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 towards you more than 40 degrees causes illumination to turn on.
•Wear the watch on the outside of your wrist.
Parallel to | More than 40° |
ground |
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 Bfor about three seconds to toggle the auto light switch on (A.EL displayed) and off (A.EL not displayed).
•The auto light switch on indicator is on the display in all modes while the auto light
switch is turned on.
• The flashing LOW 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. With this Home City code setting, the watch is configured to receive the time calibration signals of Japan. If you are using the watch in North America, Europe, or China, you will need to change the Home City code setting to match your location whenever the battery drops to Level 5.
• 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 that is higher than the actual battery level. The correct battery level should be indicated after a few minutes.
| ll l ll | • If you use the light or alarms a number of times during a | ||
| short period, all segments of the battery power indicator | |||
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| l l ll | - Alarm and hourly time signal | |
- Time calibration signal reception
After some time, the battery power indicator should stop flashing to indicate that battery power is back to normal. At this time the watch should return to normal operation.
•If the battery power indicator frequently flashes, it means that 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 a lower temperature.
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
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