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Operation Guide 4719
3
Alarm
When the alarm is turned on, the alarm sounds when the
alarm time is reached.
• All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C.
To set an alarm time
1.In the Alarm Mode, hold down A for about two
seconds to
display the setting mode.
2.Use B to change the alarm time.
• Each press of B moves the hands clockwise in one-
minute steps.
3.After setting the alarm time, press A to exit the setting
mode.
• Setting the alarm time causes the alarm to turn on
automatically.
Alarm time minute hand
On/Off status
Alarm time
hour hand
Alarm time 24-
hour hand
Alarm Operation
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the
watch is in.
• Alarm operations are performed in accordance with the Timekeeping Mode time.
• Pressing any button stops the alarm tone operation.
To toggle an alarm on and off
In the Alarm Mode, press B to toggle the alarm on (ON) and off (OF).
• The watch will beep when you turn on the alarm.
Adjusting the Home Positions
• If the time and date settings are off even after the time calibration signal is received
normally, use the following procedure to adjust their home positions.
• You can use the procedure in this section to adjust the position of the second hand,
the stopwatch minute hand and stopwatch 1/20 second hand whenever they do not
align with the 12 o’clock position when you enter the Hand Setting Mode.
To adjust the home positions
1.In the Timekeeping Mode, press C four times to enter
the Hand Setting Mode.
2.In the Hand Setting Mode, hold down A until 0 0 starts
to flash, which indicates the analog setting screen.
• The second hand is at the proper home position if it
moves to 12 o’clock. If it doesn’t, press B to move it
to 12 o’clock.
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Second hand
3.After confirming that the second hand is at the proper
home position, press C. This will switch to hour hand
and minute hand home position adjustment (Hm
flashes).
• The hour hand and minute hand are at their proper
home positions if they both move to 12 o’clock, and if
the 24-hour hand is pointing at hour 24. If the hands
are not positioned correctly, use B to move them to
their proper home positions.
4.After confirming that the hour hand and minute hand
are both at their proper home positions, press C.
This will switch to stopwatch 1/20 second hand home
position adjustment (20 flashes).
• The stopwatch 1/20 second hand is at the proper
home position if it moves to 0. If it doesn’t, use B to
move it to 0.
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Minute hand Hour hand
Stopwatch 1/20 second hand
24-hour
hand
5.After confirming that the stopwatch 1/20 second hand is
at the proper home position, press C. This will switch
to stopwatch minute hand home position adjustment
(60 flashes).
• The stopwatch minute hand is at the proper home
position if it moves to 60. If it doesn’t, use B to move
it to 60.
6.Press A to exit the setting screen.
• After you complete the home position adjustment
procedure, place the watch in a location that allows
good time calibration signal reception, and then perform
a manual receive operation. See “To perform manual
receive” for more information.
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Stopwatch minute hand
Illumination
An LED (light-emitting diode) illuminates the face of the
watch for easy reading in the dark. The watch’s auto light
switch turns on illumination automatically when you angle
the watch towards your face.
• The auto light switch must be turned on for it to operate.
• See “Illumination Precautions” for other important
information.
To illuminate the face of the watch
In the Timekeeping Mode (except when a setting screen is
on the display), press B to illuminate the face of the
watch for about one second.
• The above operation turns on illumination regardless of
the current auto light switch setting.
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About the Auto Light Switch
Turning on the auto light switch causes the face to illuminate, whenever you position
your wrist as described below in any mode. Note that this watch features a “Full Auto
LED Light”, so the auto light switch operates only when available light is below a
certain level. It does not illuminate the display under bright light.
• The auto light switch is always disabled, regardless of its on/off setting, when any
one of the following conditions exists.
When an alarm is sounding
While an auto receive operation is in progress
While a button is depressed
Parallel to
ground
More than
40°
Moving the watch to a position that is parallel to the ground and then tilting it
towards you at more than 40 degrees causes illumination to turn on.
• Wear the watch on the outside of your wrist.
Warning!
• Always make sure you are in a safe place whenever you are reading the face
of 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 on 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 (except when a setting screen is on the display), hold down
B for about three seconds to toggle the auto light switch on and off.
• Turning on the auto light switch will cause the watch to beep. The “ON” indicator
(ON) will appear and the light will turn on for 1.5 seconds.
• Turning off the auto light switch will cause the watch to beep. The “OFF” indicator
(OF) will appear for 1.5 seconds. The light will not turn on.
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. Even if the face of the watch
is blocked from light only partially,
charging will be reduced significantly.
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 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 3 and when you have the battery replaced.
• Keep the watch 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 Levels
Battery power level is indicated by hand movement and a display indicator.
• Battery level is very low when the second hand jumps every two seconds and the
display shows LO. Expose the watch to light and charge the battery as soon as
possible.
Normal
• Second hand jumps
every two seconds.
• LO displayed.
• All hands stopped.
• Display is blank.
1
2
3
All functions enabled.
Illumination, alarm and
signal reception disabled.
All functions disabled.
Jumps 2 seconds
Hand Movement/
Display Indicator
Level Function Status
To toggle a time zone between Standard Time and Daylight Saving Time
1.In the Dual Time Mode, use B to display the time zone
whose Standard Time/Daylight Saving Time setting you
want to change.
2.Hold down A to toggle between Daylight Saving Time
(DST indicator displayed) and Standard Time (DST
indicator not displayed).
• Turning on DST causes the GMT differential value to be
increased by one.
DST indicator
• The DST indicator appears on the display whenever you display a time zone for
which Daylight Saving Time is turned on.
• The DST/Standard Time setting you configure affects only the currently displayed
time zone. Other time zones are not affected.
• The
(GMT: Greenwich Mean Time) time zone cannot be switched between
Standard Time and Daylight Saving Time.