Operation Guide 3274
E-19
Warning!
Leaving the watch in bright light to charge its capacitor 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 sunlightx
Too close to an incandescent lampx
Under direct sunlightx
Charging light
The watch will start to work within about three seconds after it is exposed to lightx
(such as indoor fluorescent lighting). Set the time and calendar at this time.
Charge indicator “x” appears on the display when the capacitor charge level is low.
If you continue to use the watch without exposing it to light after “x” appear, the
watch will stop functioning after about three days.
Take steps to charge the watch’s capacitor as soon as possible after “x” appears.
See “Recovery Times” (page E-21) for details.
The daily alarm, Hourly Time Signal, and other tones will not sound while “x” is on
the display. Also, display figures may become dim.
E-18
Important!
Storing the watch for long periods in an area where there is no light or wearing it inx
such a way that it is blocked from exposure to light can cause capacitor power to run
down. Make sure that the watch is exposed to bright light whenever possible.
This watch uses a special capacitor to store power produced by the solar cell, sox
regular capacitor replacement is not required. However, after very long use, the
capacitor may lose its ability to achieve a full charge. If you experience problems
getting the capacitor to charge fully, contact your dealer or CASIO distributor about
having it replaced.
Never try to remove or replace the watch’s capacitor yourself. Use of the wrong typex
of capacitor can damage the watch.
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 capacitor. 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.
E-17
Power Supply
This watch works by light energy, so no battery is necessary. Light energy is
converted into electric energy by the solar cell and stored by the capacitor. The
illustration shown below shows how you should position the watch for charging.
Solar cell
Charge indicator
Example: Orient the watch so its face
is pointing at a light source.
The illustration shows how to positionx
a watch with a resin band.
Note that charging efficiency dropsx
when any part of the solar cell is
blocked by clothing, etc.
You should try to keep the watchx
outside of your sleeve as much
as possible. Charging is reduced
significantly if the face is only partially
covered.
E-16
PressxCwhile a countdown operation is in progress to pause it. Press Cagain to
resume the countdown.
To stop a countdown operation completely, first pause it (by pressingxC), and then
press A. This returns the countdown time to its starting value.
To set the countdown start time
In the Countdown Timer Mode, press1. Auntil the hours
of the countdown start time start to flash. This is the
setting screen.
After the hour setting is the way you want, press2. Ato
move the flashing to the minutes.
While a setting is flashing, use3. C(+) to change it.
To set the starting value of the countdown time tox
24 hours, set .
Press4. Ato exit the setting screen.
E-15
Countdown Timer
The countdown timer can be set within a range of one
minute to 24 hours. An alarm sounds when the countdown
reaches zero.
The countdown operation continues even if you exit thex
Countdown Timer Mode.
All of the operations in this section are performed in thex
Countdown Timer Mode, which you enter by pressing B
(page E-6).
To use the countdown timer
Press Cwhile in the Countdown Timer Mode to start the
countdown timer.
When the end of the countdown is reached, the alarmx
sounds for 10 seconds or until you stop it by pressing any
button. The countdown time is reset to its starting value
automatically after the alarm stops.
Hours
Seconds
Minutes
Mode indicator
E-14
Stopwatch
The Stopwatch Mode lets you measure elapsed time, split
times, and two finishes. The range of the stopwatch is
59 minutes, 59.99 seconds.
To measure times with the stopwatch
Elapsed time measurement
C C C C A
Start Stop Re-start Stop Clear
Split time measurement
C A A C A
Start Split Split release Stop Clear
Split time and 1st-2nd place times
C A C A A
Start Split
First runner
finishes.
Display time of
first runner.
Stop
Second runner
finishes.
Split release
Display time of
second runner.
Clear
Minutes
1/100 second
Seconds
Mode indicator
E-13
To turn the Hourly Time Signal on and off
In the Alarm Mode, use1. Cto select the Hourly Time
Signal ( ).
Press2. A, which will cause the flashing display to
change to “ON”. This is the setting mode.
Entering the setting mode automatically turns on thex
Hourly Time Signal.
Press3. Cto toggle the Hourly Time Signal between on
and off ( ).
Press4. Ato exit the setting screen.
Hourly Time Signal
on indicator
Alarm on indicator
E-12
When the minutes setting is the way you want, press5. A. This will cause “ON” to
flash on the display.
PressxCto toggle the alarm setting between on and off ( ).
Press6. Ato exit the setting screen.
Alarm Operation
The alarm sounds at the preset time for about 20 seconds, regardless of the mode
the watch is in.
To stop the alarm tone after it starts to sound, press any button.x
To test the alarm
In the Alarm Mode, hold down Cto sound the alarm.
E-11
To set an alarm time
In the Alarm Mode, use1. Cto scroll through the alarm screens until the one whose
time you want to set is displayed.
Alarm 1 Alarm 2 Alarm 3 Alarm 4
Alarm 5
:00 (Hourly Time Signal)
To set an alarm, display one of the screens indicated by an alarm number fromx
through .
After you select an alarm, press2. Ato enter the setting screen. The hour digits flash
because they are selected.
This operation turns on the alarm automatically.x
After the hour setting is the way you want, press3. Ato move the flashing to the
minutes.
While a setting is flashing, use4. C(+) to change it.
When setting the alarm time using the 12-hour format, take care to set the timex
correctly as a.m. or p.m. (PM indicator).
E-10
Alarms
You can set five independent Daily Alarms. When an alarm
is turned on, the alarm tone sounds when the alarm time
is reached.
You can turn on an Hourly Time Signal that causes the
watch to beep twice every hour on the hour.
There are six screens in the Alarm Mode. Five are forx
daily alarms (indicated by numbers from through ),
and one is for the Hourly Time Signal (indicated by ).
All of the operations in this section are performed in thex
Alarm Mode, which you enter by pressing B(page E-6).
Mode indicator
Hourly Time Signal
on indicator
Alarm on indicator
Alarm number
Hour Minutes
