Operation Guide 3040
Power Supply
Charging Precautions
Avoid charging the watch in the following locations, and anywhere else where the watch may become very hot.
Charging Guide
Starting from a full charge, the watch should be able to continue operating
Required Daily Charging Time
• The following is the daily amount |
of charging required each day to |
support the operations under |
The power supply of this watch uses a solar panel to generate electrical power, which is stored by a rechargeable battery. Using or storing the watch where it is not exposed to light regularly or allowing it to be blocked from light by your sleeve as you are wearing it can cause the power of the rechargeable battery to run down. To ensure stable operation, be sure to allow the watch to be exposed to light as much as possible when you are wearing or storing it.
Note that all data in memory and all settings are cleared whenever you allow the level of the rechargeable battery to go dead.
Low Battery Indication
When rechargeable battery power goes low, the watch will start to disable some of its functions and “LOW” will flash on the display in the Timekeeping Mode. If the dual time screen is displayed, the screen will change automatically to the home time screen.
If you continue using the watch without charging the battery, more functions will become disabled and “CHG” will start to flash on the display. Be sure to recharge the battery by exposing the watch to light as soon as possible at the first sign of low battery power.
Frequent flashing of the RECOV indicator also means that the battery is low. Expose the watch to light to charge the battery.
Display Indication | Disabled Functions |
•On the dashboard of an automobile parked in the sun
•Very close to an incandescent light source or other sources of heat
•In a location exposed to direct sunlight for long periods
Note that the display panel may become black under very high temperatures. This is temporary, and the display will appear normal again at lower temperatures.
Depending on the light source you are using, the case of the watch may become quite hot during charging. Take care to guard against burn injury after charging.
for about eight months without further charging under the example conditions described below.
Example of Daily Use
•Illumination: 1.5 seconds/day
•Alarm: 10 seconds/day
•Signal Reception: 10 minutes/day
•Digital Display: 18 hours/day Making sure the watch is exposed to light regularly ensures stable operation.
“Example of Daily Use”. |
Exposure Level | Approximate | |
(Brightness) | Exposure | |
Time | ||
| ||
Outdoor Sunlight | 8 minutes | |
(50,000 lux) | ||
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Sunlight through a |
| |
Window | 30 minutes | |
(10,000 lux) |
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Overcast Daylight |
| |
through a Window | 48 minutes | |
(5,000 lux) |
| |
Indoor Fluorescent | 8 hours | |
Lighting (500 lux) | ||
|
Flashing RECOV Indicator
If you use the light or alarms a number of times during a short period, a RECOV (recover) indicator flashes on the display and the following operations become disabled as battery power recovers.
• Illumination | Recover Indicator |
•Alarm and hourly time signal
•Time up beeper
•Time calibration signal reception
Normal operation will return after the battery recovers.
Timekeeping Mode Display illumination, alarms, hourly time signal, time up beeper, and other 
alerts, and time calibration signal reception.
Display, display illumination, alarms, hourly time signal, time up beeper, and other alerts, and time calibration signal reception.
•When the rechargeable battery goes completely dead, the display will go blank and timekeeping will stop. These functions will be restored when the battery is recharged.
•When you start to recharge the battery after it does dead, “CHG” will start flashing on the display. However, watch functions will not yet be
Point the solar panel (face) of the watch at a light source.
•Remember that even a partial blockage of the solar panel reduces charging efficiency.
Example: Positioning the watch
Solar panel
•The illustration shows the resin band model.
•Charge Times Required to Charge the Battery
Exposure Level | Approximate Exposure Time | ||
(Brightness) | Charge Indicator Off \ | Full Charge | |
Outdoor Sunlight | 2 hours |
| 38 hours |
(50,000 lux) |
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Sunlight through a |
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Window | 5 hours |
| 141 hours |
(10,000 lux) |
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Overcast Daylight |
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through a Window | 8 hours |
| 229 hours |
(5,000 lux) |
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Indoor Fluorescent | 83 hours |
| – – – |
Lighting (500 lux) |
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•Note that the above charging times are for reference only. Actual charging time depends on a variety of environmental factors.
Power Saving
Illumination |
| Operation Tone |
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Power Saving causes the watch to enter a sleep state automatically in order to save power whenever it is left in the dark. The Power Saving feature of the watch is turned on at the factory.
•Note that the watch may also enter the sleep state if the watch is blocked from light by your sleeve.
In any mode (except when a setting screen is on the display), press the B button to illuminate the display for easy reading in the dark.
The tone that sounds to signal a mode change or other operation can be turned on and off.
How the sleep state works
•Display sleep state
The display sleep state is triggered whenever the watch is left in the dark for about one hour between the hours of 10 p.m. and 6 a.m.
•The display sleep state causes the display to go blank, except for a flashing Power Saving indicator. Alarms and the hourly time signal continue to operate normally while the watch is in the display sleep state.
•The watch does not enter the sleep state if it is in the Timer Mode or Stopwatch Mode.
Power Saving Indicator
•Function sleep state
The function sleep state is triggered whenever the watch is left in the dark for six or seven days.
•The Power Saving indicator stops flashing and remains on the display, and the following functions are disabled. Alarms and the hourly time signal are also disabled while the watch is in the function sleep state.
Time calibration signal reception is not performed while the watch is in the function sleep state.
• Digital timekeeping functions continue to operate normally.
❚To recover from the sleep state
Move the watch to a brightly lit location or press any button.
•It can take up to two seconds before display figures
❚To turn Power Saving on and off
See the procedure under “To configure Home City settings” for information about turning off Power Saving.
Leaving the watch in a drawer or anywhere else it is dark can cause Power Saving to trigger in order to conserve battery power.
•Illumination may be difficult to see under bright sunlight.
•Illumination turns off automatically if an operation tone or alarm sounds.
•Illumination will not turn on while manual receive is in progress.
•You may notice a slight sound from the watch while illumination is turned on. This is the sound of EL panel vibration and does not indicate malfunction.
❚To turn the operation tone on or off
When any screen besides a | MUTE Indicator |
setting screen (one with a |
|
flashing setting) is on the |
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display, hold down the C |
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button for about three |
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seconds. |
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• This will cause the operation tone to sound and then toggle the operation tone on or off.
•A MUTE indicator is on the display while the operation tone is off.
•Holding down the Cbutton also changes the watch’s current mode.
•The alarm, hourly time signal, and timer time up beeper continue to sound, even when the operation tone is turned off.
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