Operation Guide 5163 (OC)
2.After you select an alarm, hold down Afor about three seconds until the hour setting of the alarm time
starts to ß ash. This is the setting mode.
ξ This operation turns on the alarm automatically.
3.Press Cto move the ß ashing between the hour and minute settings.
4.While a setting is ß ashing, use D(+) and B(Ð) to change it.
5.Press Ato exit the setting mode.
Alarm Operation
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the watch is in. In the case of the snooze alarm, the alarm operation is performed a total of seven times, every Þ ve minutes, or until you turn the alarm off (page
ξAlarm and Hourly Time Signal operations are performed in accordance with the current time in your Home City, as kept in the Timekeeping Mode.
ξTo stop the alarm tone after it starts to sound, press any button.
ξPerforming any one of the following operations during a
Displaying the Timekeeping Mode setting screen (page
To turn an alarm on and off
Alarm on indicator | 1. In the Alarm Mode, use Dto select an alarm. | |||
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| Snooze alarm indicator | 2. Press Ato toggle it on (on) and off (- | ||
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| ξ Turning on an alarm (AL1, AL2, AL3, AL4 or SNZ) | |||
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| displays the alarm on indicator on its Alarm Mode screen. |
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| ξ In all modes, the alarm on indicator is shown for any alarm that |
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| ξ The alarm on indicator flashes while the alarm is sounding. |
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| ξ The snooze alarm indicator flashes while the snooze alarm is |
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| sounding and during the |
ON
To turn the Hourly Time Signal on and off
Hourly time signal on indicator 1. | In the Alarm Mode, use Dto select the Hourly Time Signal ( SIG ) |
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2. | Press Ato toggle it on (on) and off (- |
| ξ The Hourly Time Signal on indicator is shown on the display in all |
| modes while this function is turned on. |
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Illumination
An LED
when you angle the watch towards your face.
ξThe auto light switch must be turned on (indicated by the auto light switch
on indicator) for it to operate.
ξ See “Illumination Precautions” (page
To illuminate the display manually
In any mode (except a setting mode), press Bto turn on the illumination for about one second.
ξThe 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 ÒFull Auto LED LightÓ, so the auto light switch operates only when available light is below a certain level. It does not illuminate the display under bright light.
ξThe auto light switch is always disabled, regardless of its on/off setting, when any one of the following conditions exists.
−While an alarm is sounding
−While a signal receive operation is in progress
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.
ξWear the watch on the outside of your wrist.
Parallel to | More than 40° |
ground |
Warning!
ξAlways 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.
ξWhen 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 (auto light switch on indicator displayed) and off (auto light switch on indicator not displayed).
ξThe auto light switch on indicator is on the display in all modes while the auto light switch is turned on.
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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:
Solar cell | Orient the watch so its face is pointing at a light source. |
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| ξ The illustration shows how to position a watch with a |
| resin band. |
| ξ Note that charging efficiency drops when any part of the |
| solar cell is blocked by clothing, etc. |
| ξ You should try to keep the watch outside of your sleeve |
| as much as possible. Charging is reduced significantly |
| if the face is even only partially covered. |
Important!
ξStoring 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.
ξThis 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.
ξNever try to remove or replace the watch’s special battery yourself. Use of the wrong type of battery can damage the watch.
ξAll 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 (C: Charge) (page
ξTurn on the watch’s Power Saving function (page
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Battery Power Indicator and Power Recovery Mode indicator
The battery power indicator indicates you the current status of the rechargeable batteryÕs power.
Battery Power indicator | Level | Battery Power Indicator | Function Status |
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| 1 (H) |
| All functions enabled |
| 2 (M) |
| All functions enabled |
| 3 (L) |
| Auto and manual receive, |
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| illumination, and beeper disabled | |
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| (Charge Soon Alert) |
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| Except for timekeeping, all |
| 4 (C: Charge) |
| functions and display indicators |
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| disabled |
| 5 (C: Charge) |
| All functions disabled |
ξThe flashing LOW indicator at Level 3 (L) tells you that battery power is very low, and that exposure to bright light for charging is required as soon as possible.
ξAt Level 5 (C: Charge), all functions are disabled and settings return to their initial factory defaults.
Once the battery reaches Level 2 (M) after falling to Level 5 (C: Charge), reconfigure the current time, date, and other settings.
ξDisplay indicators reappear as soon as the battery is charged from Level 5 (C: Charge) to Level 2 (M).
ξThe watch’s Home City code setting will change automatically to TYO (Tokyo) whenever the battery drops to Level 5 (C: Charge). 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 or Europe, or China you will need to change the Home City code setting to match your location whenever the battery drops to Level 5 (C: Charge).
ξLeaving 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.
Power recovery | ξ Overuse of display illumination or the beeper can cause the RECOV | ||
(Recover) indicator to appear in the upper display, which indicates that | |||
mode indicator | |||
the watch is in the battery power recovery mode. Face illumination, the | |||
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| alarm, the countdown timer alarm, time signals, and all hand operations are | |
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| disabled in the power recovery mode. | |
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| The watch continues to keep time internally, so regular timekeeping and | |
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| function will resume as soon as battery power recovers to normal levels, | |
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| which is indicated when the RECOV indicator disappears. | |
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| ξ If RECOV appears frequently, it probably means that remaining battery | |
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| power is low. Leave the watch in bright light for some time to allow it to | |
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| charge. | |