
Operation Guide 4362
3
Illumination
An LED (light-emitting diode) and light guide panel
illuminate the digital display for easy reading in the dark.
•See “Illumination Precautions”for other important
information.
To turn on illumination
In any mode (except when a setting is on the display),
press Bto illuminate the display.
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.
Battery Power Indicator and Recover Indicator
The battery power indicator shows you the current power level of the rechargeable
battery.
Function Status
All functions enabled.
All functions enabled.
Alarm, hourly time signal,
and illumination disabled.
All functions disabled.
Display disabled and
initialized.
Level
1
2
3
4
5
Battery Power Indicator
Battery power indicator
Recover indicator
(Charge Soon Alert)
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(Charge Soon Alert)
•The LOW indicator flashes on the display in the Timekeeping Mode when battery is
at Level 3.
•The LOW indicator at Level 3 and the flashing charge indicator (CHG) 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) 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.
•
Leaving the watch in direct sunlight or some other very strong light source can cause the
battery power indicator to show a reading that is momentarily higher than the actual
battery level. The correct battery power indicator should appear after a few minutes.
•If you use the light or alarms a number of times during a short period, the recover
indicator ( ) appears and the following operations become disabled until battery
power recovers.
Illumination
Beeper tone
After some time, battery power will recover and the recover indicator will disappear,
indicating that the above functions are enabled again.
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
Exposure Level (Brightness)
Outdoor Sunlight (50,000 lux)
Sunlight Through a Window (10,000 lux)
Daylight Through a Window on a Cloudy Day
(5,000 lux)
Indoor Fluorescent Lighting (500 lux)
Approximate Exposure Time
6 minutes
22 minutes
36 minutes
6 hours
•Since these are the specs, we can include all the technical details.
•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
•16 minutes of signal reception per day
•Stable operation is promoted by frequent exposure to light.
Charging Guide
After a full charge, timekeeping remains enabled for up to about 8 months.
•The following table shows the amount of time the watch needs to be exposed to light
each day in order to generate enough power for normal daily operations.
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Recovery Times
The table below shows the amount exposure that is required to take the battery from
one level to the next.
•The above exposure time values are all for reference only. Actual required exposure
times depend on lighting conditions.
5 hours
18 hours
29 hours
Exposure Level
(Brightness)
Outdoor Sunlight
(50,000 lux)
Sunlight Through a Window
(10,000 lux)
Daylight Through a Window
on a Cloudy Day (5,000 lux)
Indoor Fluorescent Lighting
(500 lux)
Approximate Exposure Time
Level 5 Level 4 Level 3 Level 2 Level 1
2 hours
6 hours
9 hours
97 hours
21 hours
79 hours
127 hours
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Reference
This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.
Power Saving Function
When turned on, the Power Saving function enters a sleep
state automatically whenever the watch is left in an area
where it is dark for a certain period. The table below
shows how watch functions are affected by the Power
Saving function.
Power saving
indicator
•Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.
•The watch will not enter the sleep state between 6:00 AM and 9:59 PM. If the watch
is already in the sleep state when 6:00 AM arrives, however, it will remain in the
sleep state.
To recover from the sleep state
Perform any one of the following operations.
•Move the watch to a well-lit area.
•Press any button.
Elapsed Time
in Dark
60 to 70 minutes
6 or 7 days
Display
Blank, with Power saving
indicator ( ) flashing
Blank, with Power saving
indicator ( ) not flashing
Operation
All functions enabled, except
for the display
Beeper tone, illumination, and
display are disabled.
To turn Power Saving on and off
1. In the Timekeeping Mode, hold down Auntil the city
code starts to flash, which indicates the setting screen.
2. Press Cnine times until the Power Saving on/off
screen appears.
3. Press Dto toggle Power Saving on ( ) and off ( ).
4. Press Ato exit the setting screen.
•The Power Saving indicator ( ) is on the display in all
modes while Power Saving is turned on.
Button Operation Tone
In any mode (except when a setting screen is on the display), hold down Cfor about
three seconds to toggle the button operation tone on and off. The button operation
tone off indicator ( ) is displayed while the tone is turned off.
•Even if the button operation tone is turned off, the daily alarm and countdown timer
alarm continue to sound when required.
On/Off status
Auto Return Features
•If you leave the watch in the Alarm or Hand Setting Mode 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.
Scrolling
The Band Dbuttons are used in various modes and setting screens to scroll
through data on the display. In most cases, holding down these buttons during a scroll
operation scrolls through the data at high speed.