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Operation Guide 3722
Adjusting the Home Positions
If the time and date settings are wrong even after the time calibration signal is
received normally, use the following procedure to adjust their home positions.
To adjust the home positions
1. Enter the Home Position Adjustment Mode.
12 o'clock
• If the home position of the second hand is currently
correct, it will move to the 12 o'clock position.
2. While in the Home Position Adjustment Mode, hold
down A for about five seconds. This will cause the
second hand to make one revolution and stop at its
current home position.
• The analog hands do not keep time during home
position adjustment.
3. Check the position of the second hand.
• The second hand home position is correct if it is
pointing at 12 o'clock.
Correct second hand
• If the second hand is not pointing at 12 o'clock, it
home position
means that its home position is off. If this happens,
press B to move the second hand clockwise in one-
second steps, until it points at 12 o'clock.
12 o'clock
4. Press A to advance to hour and minute hand home
position adjustment.
• If current hour and minute hand alignment is correct,
they will both move to 12 o'clock.
5. Check the position of the hour and minute hands.
• If the hour and minute hands are not pointing at 12
o'clock, it means that their home position is off. If this
happens, press B to move the hour and minute
hands clockwise in 10-second steps, until they point
at 12 o'clock.
• You can change the hour and minute hand movement
Correct hour
direction to counterclockwise by pressing A. After
and minute hand
that, each press of B will move the hour and minute
home position
hands counterclockwise in 10-second steps.
6. Press A to advance to date home position adjustment.
• The date indicator will show
indicator
position is correct. Note that it can take up to 90
seconds before
7. Check the date indicator.
8. If the date indicator shows something other than
means that the date home position is off. If this
happens, press B to advance the date until
appears.
•
is located between 31 and 1.
9. Press A to exit home position adjustment.
• This causes the date to change to the current date, and
the hour and minute hands to move to the current time.
• Note that all button operations are disabled while the
Correct date home
date is changing, and the hour and minute hands are
position
moving.
• To return to the Timekeeping Mode, press B.
• 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.
Timekeeping
Use the Timekeeping Mode to set and view the current
time and date. This section also explains how to set the
Minute hand
Hour hand
current date and time manually.
• If you become confused and lose your way during the
following procedures, simply put the watch down and do
not perform any button operation for two or three
minutes. This will cause the watch to enter the
Timekeeping Mode (indicated by normal one-second
movement of the second hand) automatically. After that,
you can try performing the manual setting procedure
again from the beginning.
• All of the operations in this section are performed in the
Date
Timekeeping Mode, which you enter by pressing B.
Second hand
To set the time and date manually
1. In the Timekeeping Mode, hold down A for about five
seconds.
• This will cause the second hand to move to 5 o'clock, 6
o'clock, 7 o'clock, or 8 o'clock, depending on the currently
selected GMT differential setting. This is the setting mode.
• The GMT differential value indicates the time difference in
hours between Greenwich Mean Time and the currently
GMT differential
GMT
value (–05)
selected time zone.
differential
• The hour and minute hands do not move in the setting mode.
GMT differential
value
value (–06)
2. Press A to cycle through settings in the sequence shown
(–08)
GMT differential
below.
value (–07)
Hold down A.
Press A.
Timekeeping
GMT Differential
Value
Mode
Year
Year
(1's Digit)
(10's Digit)
3. Select the setting you want to change, and then use B to change it as shown
below.
To do this:
While the second hand is here:
Change the time zone
5 o'clock (GMT –05), 6 o'clock
(GMT –06), 7 o'clock (GMT –07),
or 8 o'clock (GMT –08)
Move the hour and minute hands
AM or PM
clockwise one minute
Move the hour and minute hands
AM or PM
counterclockwise one minute
Reset the seconds to 00
SEC
• Pressing B while the seconds setting is selected will cause the second hand to
move to 00 seconds. This also advances the minute by one, resets the seconds
count to 00, and exits the setting mode automatically.
• If you want to change the year, month, and day setting after resetting the
seconds, re-enter the setting mode from step 1.
if the date home
appears.
, it
Hour/Minutes
Hour/Minutes
(Forward)
(Back)
Month
Day
Seconds
Do this:
Use B (+).
Use B (+).
Use B (–).
Press B.
Dec
To do this:
Nov
Jan
Change the day
Oct
Feb
Change the month
Sep
Mar
Change the year
Aug
Apr
• When setting the day, the watch automatically will skip days
Jul
May
Jun
(30 and 31) that are not included in the currently selected
Setting the Month
month. If you can't select 30 or 31 when you want to, check
0
to make sure that the proper month is selected.
1
4. After setting the 1's digit of the year, press A to exit the
2
setting mode.
• This will cause the hands to move to the current time, and
9
3
resume normal movement.
• Make sure that you set the time correctly as AM or PM (as
8
4
indicated by the second hand) when setting the time. The
second hand will move between AM and PM any time the
7
5
6
hour hand moves past 12 o'clock while you are setting the
Setting the Year
time.
Illumination
An LED (light-emitting diode) illuminates the face of the
watch for easy reading in the dark. The watch's auto light
switch automatically illuminates the face 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 for the setting mode),
press A to illuminate the face of the watch about for one
second.
• The 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 the face to illuminate about for one second,
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 face under bright light.
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.
Parallel to
ground
Warning!
• Always make sure you are in a safe place whenever you are reading the face
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.
• 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 Receive Result Mode, hold down A for about three seconds to toggle the auto
light switch on and off.
• You can check the current auto light switch on/off setting by pressing A while in the
Receive Result Mode. If the face of the watch illuminates when you press A, it
means that the auto light switch is on. The auto light switch is off if the face does not
illuminated when you press A.
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.
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.
While the second hand is here:
Do this:
Use B (+).
12 o'clock
Current month
10's digit of current year
1's digit of current year
More than
40°
Solar cell
3
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