Casio Watch MA0908 EA User Manual

MA0908-EA  
Operation Guide 5089  
Important!  
Congratulations upon your selection of this CASIO watch.  
Keep the watch in an area normally exposed to bright light when storing it for long  
periods. This helps to ensure that power does not run down.  
This watch does not have a city code that corresponds to the UTC offset of –3.5  
hours. Because of this, the radio-controlled atomic timekeeping function will not  
display the correct time for Newfoundland, Canada.  
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 power to run down.  
Make sure that the watch is exposed to bright light whenever possible.  
Power Levels  
Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any  
damage or loss suffered by you or any third party arising through the use of this  
product or its malfunction.  
You can get an idea of the watch’s power level by  
observing the movement of the xSecond Hand in the  
Timekeeping Mode.  
B
+
If the xSecond Hand is moving normally at one-second  
intervals, power is at Level 1.  
If the xSecond Hand is moving at two-second intervals,  
power is at Level 2, which is quite low. Expose the watch  
to light as soon as possible so it can charge.  
About This Manual  
Button operations are indicated using the letters A through  
D shown in the illustration.  
B
@
+
Hand Functions  
z Hour Hand  
x Second Hand  
c Minute Hand  
@
5
Moves at two-second  
intervals.  
v Left Dial Hand:  
Indicates the current day of the week and current mode.  
Level Hand Movement  
Function Status  
>
*
6
5
1
Normal.  
All functions enabled  
b 24-hour Hand:  
Indicates the current 24-hour timekeeping hour.  
The long end indicates the current hour between 18:00  
and 6:00. The short end indicates the current hour  
between 6:00 and 18:00.  
xSecond Hand moves at two-second  
intervals.  
Beeper, time calibration signal  
reception disabled  
2
mDay changes to 1 (home position).  
xSecond Hand stopped.  
z Hour Hand and cMinute Hand  
stopped at 12 o’clock.  
3
All functions disabled  
n Right Dial Hands: Indicate a time, in 24-hour format, depending on the current  
mode.  
m Day  
When power drops to Level 3, all functions will be disabled but the watch will  
continue to keep time internally for about one week. If you recharge the battery  
sufficiently during this period, the analog hands will move automatically to the  
correct setting and regular timekeeping will resume. After one week, all settings  
(including timekeeping) will be cleared. Recharging the battery will reset all settings  
to their initial factory defaults.  
This User’s Guide uses numbers shown above to identify watch hands and indicators.  
Things to check before using the watch  
Power Recovery Mode  
1. Hold down C for about two seconds to enter the Timekeeping Mode, and  
then observe the movement of the xSecond Hand.  
The watch is designed to go into a power recovery mode that stops hand operation  
temporarily whenever power suddenly drops below a certain level due to overuse  
of the alarm tone over a short period. Note that all operations are disabled while the  
watch is in the power recovery mode.  
Is the xSecond Hand moving smoothly at one-second intervals?  
The hands will move to the correct positions and the watch will resume normal  
operation after power recovers (in about 15 minutes). Putting the watch in a location  
where it is exposed to light will help power to recover sooner.  
NO  
YES  
The watch is charged sufficiently.  
For details about charging, see  
“Charging the Watch”.  
Is the xSecond Hand moving at  
two-second intervals or is it stopped  
completely?  
Charging Times  
YES  
NEXT  
Level Change *2  
Daily  
Level 3  
Level 2  
Level 1  
Exposure Level (Brightness)  
Operation  
*1  
Power is low. Charge the watch by placing  
it in a location where it is exposed to light.  
For details, see “Charging the Watch”.  
Go to step 2.  
Outdoor sunlight (50,000 lux)  
Window sunlight (10,000 lux)  
8 minutes  
2 hours  
23 hours  
90 hours  
30 minutes  
6 hours  
8 hours  
92 hours  
2. Check the Home City and the daylight saving time (DST) setting.  
Window sunlight on cloudy day  
(5,000 lux)  
48 minutes  
8 hours  
– – –  
– – –  
Use the procedure under “To configure Home City settings” to configure your Home  
City and daylight saving time settings.  
Indoor fluorescent lighting (500 lux)  
* 1 Approximate exposure each day to generate power for normal daily operation.  
* 2 Approximate exposure to take power up one level.  
The above times are for reference only. Actual times depend on lighting conditions.  
For details about the operating time and daily operating conditions, see the “Power  
Supply” section of the Specifications.  
Important!  
Proper time calibration signal reception and World Time settings depend on correct  
Home City, time, and date settings in the Timekeeping Mode. Make sure you  
configure these settings correctly.  
3. Set the current time.  
Power Saving  
To set the time using a time calibration signal  
See “To get ready for a receive operation”.  
To set the time manually  
Power Saving enters a sleep state automatically whenever the watch is left for a  
certain period in an area where it is dark. The table below shows how watch functions  
are affected by Power Saving.  
See “Configuring Current Time and Date Settings Manually”.  
There actually are two sleep state levels: “second hand sleep” and “function sleep”.  
The watch is now ready for use.  
For details about the watch’s radio controlled timekeeping feature, see “Radio  
Controlled Atomic Timekeeping”.  
Elapsed Time in Dark  
Operation  
xSecond Hand only stopped at 12 o’clock, all  
other functions enabled  
60 to 70 minutes (second hand sleep)  
All functions, including analog timekeeping,  
disabled  
6 or 7 days (function sleep)  
Internal timekeeping maintained  
Charging the Watch  
The watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch  
is already in a sleep state when 6:00 AM arrives, however, it will remain in the sleep  
state.  
The face of the watch is a solar cell that generates power from light. The generated  
power charges a built-in rechargeable battery, which powers watch operations. The  
watch charges whenever it is exposed to light.  
The watch will not enter a sleep state while it is in the Stopwatch Mode.  
Charging Guide  
To recover from the sleep state  
Move the watch to a well-lit area or press any button.  
Whenever you are not  
wearing the watch, leave  
it in a location where it is  
exposed to light.  
When wearing the watch,  
make sure that its face is  
not blocked from light by the  
sleeve of your clothing.  
The watch may enter a  
sleep state if its face is  
blocked by your sleeve  
even only partially.  
Best charging  
Radio Controlled Atomic Timekeeping  
performance is achieved  
by exposing the watch to  
light that is as strong as  
possible.  
This watch receives a time calibration signal and updates its time setting accordingly.  
However, when using the watch outside of areas covered by time calibration signals,  
you will have to adjust the settings manually as required. See “Configuring Current  
Time and Date Settings Manually” for more information.  
This section explains how the watch updates its time settings when the city code  
selected as the Home City is in Japan, North America, Europe, or China, and is one  
that supports time calibration signal reception.  
Warning!  
Leaving the watch in bright light for charging 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  
The watch can receive the signal from the  
If your Home City code setting is this:  
transmitter located here:  
LON, PAR, ATH  
Anthorn (England), Mainflingen (Germany)  
Shangqiu City (China)  
HKG  
TYO  
Fukushima (Japan), Fukuoka/Saga (Japan)  
Fort Collins, Colorado (United States)  
HNL, ANC, LAX, DEN, CHI, NYC  
1
 
Operation Guide 5089  
To select a mode  
Note  
Press C to cycle between the modes as shown below. The vLeft Dial Hand  
indicates the currently selected mode.  
After you specify a city code, the watch will use UTC* offsets to calculate the  
World Time based on the current time in your Home City.  
Selecting some city codes makes it possible for the watch to receive the time  
calibration signal for the corresponding area automatically.  
Timekeeping Mode  
C
Stopwatch Mode  
* Coordinated Universal Time, the world-wide scientific standard of timekeeping.  
The reference point for UTC is Greenwich, England.  
The hand indicates the day  
of the week (SU, MO, TU,  
WE, TH, FR, SA).  
The hand points to 0.  
Configuring Current Time and Date Settings Manually  
You can configure current time and date settings manually when the watch is unable  
to receive a time calibration signal.  
Alarm Mode  
World Time Mode  
>
The hand points to ALM.  
The hand points to STD  
or DST.  
To change the current time setting manually  
1. In the Timekeeping Mode, keep A depressed (for about  
five seconds) as the xSecond Hand goes through the  
following sequence.  
Moves to YES (or Y for some models) or NO (N)  
to indicate the last signal reception result, then to  
READY (R), and then to the city code of the currently  
selected Home City.  
Timekeeping  
Use the Timekeeping Mode to view the current time and date. To enter the  
Timekeeping Mode from any other mode, hold down C for about two seconds.  
The vLeft Dial Hand will indicate whether the  
>
@
currently selected city code is configured for standard  
time (STD) or daylight saving/summer time (DST).  
Hand Functions  
z Hour Hand  
x Second Hand  
c Minute Hand  
v Left Dial Hand: Indicates the day of the week.  
b 24-hour Hand:  
Indicates the current 24-hour timekeeping hour. The  
long end indicates the current hour between 18:00 and  
6:00. The short end indicates the current hour between  
6:00 and 18:00.  
B
@
+
2. Change the Home City and daylight saving time (DST) settings, if you want.  
For details about these settings, see steps 2 and 3 under “To configure Home  
City settings”.  
In the following steps, each press of C cycles between settings as shown  
below.  
Year  
(tens digit)  
Home city/DST  
Hour/Minute  
>
*
6
5
Year  
(ones digit)  
n Right Dial Hands:  
Indicate the current time in the World Time City in  
24-hour format.  
m Day  
Day  
Month  
B
@
+
3. Press C.  
The xSecond Hand will move to 12 o’clock. This is  
the time setting mode.  
Configuring Home City Settings  
There are two Home City settings: actually selecting the Home City and selecting  
either standard time or daylight saving time (DST).  
4. Use D (+) and B (–) to change the time (hour and  
minute) setting.  
Each press of either button will move the hands  
(zHour Hand and cMinute Hand) one minute.  
Holding down D or B will start high-speed zHour  
Hand and cMinute Hand movement in the applicable  
direction. To stop high-speed hand movement, press  
any button.  
The b24-hour Hand and zHour Hand move in sync  
with each other.  
When setting the time, make sure that the b24-hour  
Hand indicates the proper a.m./p.m. hour.  
To configure Home City settings  
Note  
This watch does not have a city code that  
corresponds to Newfoundland.  
*
1. In the Timekeeping Mode, keep A depressed (for about  
five seconds) as the xSecond Hand goes through the  
following sequence.  
Moves to YES (or Y for some models) or NO (N)  
to indicate the last signal reception result, then to  
@
READY (R), and then to the city code of the currently  
If you want to change the date setting at this time, press C and perform the  
procedure starting from step 3 under “To change the current date setting  
manually”.  
selected Home City.  
This is the city code setting mode.  
The watch will exit the setting mode automatically if you do not perform any  
operation for about two or three minutes.  
For details about city codes, see the “City Code Table”.  
5. After the time setting is the way you want, press A to return to regular  
timekeeping.  
This will cause the xSecond Hand to move automatically to 12 o’clock and  
resume movement from there.  
B
+
2. To change the Home City setting, press D to move the  
xSecond Hand clockwise.  
To change the current date setting manually  
Keep pressing D until the xSecond Hand is pointing  
at the city code you want to select as your Home City.  
Each time you change the city code setting, the z  
Hour Hand, cMinute Hand, b24-hour Hand and  
mDay move to the current time and date for that city  
code. Do not perform the next operation until these  
hands stop moving.  
1. In the Timekeeping Mode, keep A depressed (for  
about five seconds) as the xSecond Hand goes  
through the following sequence.  
Moves to YES (or Y for some models) or NO (N)  
to indicate the last signal reception result, then  
to READY (R), and then to the city code of the  
currently selected Home City.  
@
00  
10  
20  
90  
30  
3. Press B to toggle the time for the currently selected  
city code between STD (standard time)/DST (daylight  
saving time).  
2. Press C twice.  
>
*
@
5
The xSecond Hand will move to the tens digit  
of the current year setting. This is the year  
setting mode.  
The year can be set in the range of 2000 to  
2099.  
80  
40  
While you are selecting the Home City code, the vLeft Dial Hand will indicate  
whether the currently selected city code is configured for standard time (STD) or  
daylight saving/summer time (DST).  
Note that you cannot switch between STD (standard time)/DST (daylight saving  
time) while UTC is selected as your Home City.  
70  
50  
60  
Setting the year (tens digit)  
3. Press D to move the xSecond Hand clockwise  
until it is pointing at the year tens digit you want  
to select.  
@
4. After all the settings are the way you want, press A to return to the Timekeeping  
0
Mode.  
1
4. After you select the year tens digit, press C.  
The xSecond Hand will move to the ones digit  
of the current year.  
To toggle the Home City time between standard time and daylight saving time  
1. Perform the step 1 under “To configure Home City settings”.  
Each time you select a city code, the zHour Hand, cMinute Hand, and  
b24-hour Hand move to the current time for that city code. Do not perform the  
next operation until these hands stop moving.  
While you are selecting the Home City code, the vLeft Dial Hand will indicate  
whether the currently selected city code is configured for standard time (STD) or  
daylight saving/summer time (DST).  
2
9
3
5. Press D to move the xSecond Hand clockwise  
until it is pointing at the year ones digit you want  
to select.  
8
4
7
5
6
2. Press B to toggle the time for the city code of the currently selected Home City  
between STD (standard time)/DST (daylight saving time).  
Setting the year (ones digit)  
Note that you cannot switch between STD (standard time)/DST (daylight saving  
time) while UTC is selected as your Home City.  
3. After the setting is the way you want, press A to return to the Timekeeping Mode.  
3
 
Operation Guide 5089  
Dec  
Checking the Current Time in a Different Time Zone  
6. After you select the year ones digit, press C.  
The xSecond Hand will move to the currently  
selected month. This is the month setting  
mode.  
Nov  
Jan  
You can use the World Time Mode to view the current time in one of 29 time  
zones around the globe. Each time zone has a “city code”, which is a three-letter  
abbreviation of a representative city in the zone. The representative city of the time  
zone that is currently selected in the World Time Mode is called the “World Time City”.  
Oct  
Feb  
7. Use D to move the xSecond Hand to the  
month setting you want.  
Sep  
Mar  
Hand Functions  
@
8. After the month setting is the way you want,  
press C.  
The xSecond Hand will move to 12 o’clock,  
and the watch will enter the day setting mode.  
x Second Hand: Indicates the currently selected World  
Aug  
Apr  
Time City.  
v Left Dial Hand: Indicates the current STD (standard  
time) or DST (daylight saving time)  
setting of the currently selected World  
Time City.  
Jul  
May  
@
Jun  
Setting the month  
n Right Dial Hands: Indicate the current time in the  
selected World Time City in 24-hour  
format.  
@
9. Use D (+) and B (–) to change the mDay  
setting.  
If you want to change the time setting at  
this time, press C and then perform the  
procedure starting from step 3 under “To  
change the current time setting manually”.  
>
6
To view the time in another time zone  
1. Use C to move the vLeft Dial Hand to STD or DST.  
This indicates the World Time Mode.  
10. After the settings are the way you want, press  
A to return to regular timekeeping.  
This will cause the xSecond Hand to move  
automatically to 12 o’clock and resume  
movement from there.  
The day of the week indicated by the v  
Left Dial Hand changes automatically in  
accordance with the date (year, month, and  
day).  
2. Use D to move the xSecond Hand to the city code you want to select as the  
World Time City.  
The nRight Dial Hands will move to the current time in the currently selected  
World Time City. At this time, the zHour Hand and cMinute Hand will continue  
to indicate the current time in the Home City.  
For full information on city codes, see the “City Code Table”.  
If you think that the time indicated for the selected World Time City is not correct,  
it probably means that there is something wrong with your Home City settings.  
Use the procedure under “To configure Home City settings” to correct the Home  
City settings.  
>
5
Note  
The watch’s built-in full automatic calendar makes allowances for different month  
lengths and leap years. Once you set the date, there should be no reason to  
change it except after you have the watch’s rechargeable battery replaced or after  
power drops to Level 3.  
To specify standard time or daylight saving time (DST) for a time zone  
1. In the World Time Mode, use D to select the city code  
for the time whose setting you want to change.  
Wait until the nRight Dial Hands complete their  
move to the time in the currently selected World Time  
City. You will not be able to perform step 2 of this  
procedure until the hands stop moving.  
Using the Stopwatch  
The stopwatch measures elapsed time and split times.  
2. Hold down A for about two seconds until the watch  
beeps. This will cause the vLeft Dial Hand to toggle  
between DST (daylight saving time) and STD (standard  
time).  
Note that you cannot switch between STD (standard  
time)/DST (daylight saving/summer time) while UTC is  
selected as the World Time City.  
Note that the STD (standard time)/DST (daylight  
saving/summer time) setting affects only the currently  
selected time zone. Other time zones are not affected.  
Hand Functions  
x Second Hand: Indicates the stopwatch 1/10-second  
@
>
6
count.  
Hold down  
A for two  
seconds  
v Left Dial Hand: Indicates the stopwatch 1/100-second  
count.  
n Right Dial Hands: Indicate the stopwatch minutes and  
seconds.  
To perform elapsed time measurement  
1. Use C to move the vLeft Dial Hand to 0.  
>
6
This indicates the Stopwatch Mode.  
Swapping your Home City and World Time City  
You can use the procedure below to swap your Home City and World Time City. This  
capability can come in handy when you frequently travel between two locations in  
different time zones.  
2. Now you can perform either of following stopwatch operations.  
You will not be able to perform any stopwatch operation while the hands are  
moving to their initial positions after you enter the Stopwatch Mode.  
To perform an elapsed time operation  
The following example shows what happens when the Home City and World Time  
City are swapped while the Home City originally is TYO (Tokyo) and the World Time  
City is NYC (New York).  
B
B
Home City  
World Time City  
B
B
D
Start  
Stop  
(Restart)  
(Stop)  
Reset  
Tokyo  
New York  
9:08 a.m.  
Before swapping  
After swapping  
10:08 p.m.  
(Standard time)  
(Daylight saving time)  
To pause at a split time  
New York  
9:08 a.m.  
(Daylight saving time)  
Tokyo  
10:08 p.m.  
B
B
D
D
Normal stopwatch hand movement will  
resume automatically after five seconds.  
(Standard time)  
Start  
Split  
Stop  
Reset  
To swap your Home City and World Time City  
Note  
@
1. In the World Time Mode, use D to select the World  
Time City you want.  
The Stopwatch Mode can indicate elapsed time up to 23 minutes, 59.99 seconds.  
In the following cases, the hands of the watch are moving, so pressing D or B will  
not perform any stopwatch operation.  
While the hands are moving to elapsed timekeeping after you enter the Stopwatch  
Mode  
While the watch is changing dates at midnight  
Once started, stopwatch timing continues until you press B to stop it, even if you  
exit the Stopwatch Mode to another mode or timing reaches the stopwatch limit  
defined above.  
In this example, you would move the xSecond Hand  
to NYC in order to select New York as the World  
Time City.  
Wait until the nRight Dial Hands complete their  
move to the time in the currently selected World Time  
City. You will not be able to perform step 2 of this  
procedure until the hands stop moving.  
Whenever you enter the Stopwatch Mode, the hands of the watch move to their  
initial Stopwatch Mode positions. If you did not reset the stopwatch the last time you  
used it, the hands will return to the positions they were in the last time you exited  
the Stopwatch Mode.  
The xSecond Hand indicates the 1/10-second count for the first 30 seconds of  
a stopwatch elapsed time operation. After that, the hand stops at 0. 1/10-second  
timing continues internally after the first 30 seconds, and the xSecond Hand will  
jump to the current value whenever B (Stop) or D (Split) is pressed.  
Though the vLeft Dial Hand is stopped while an elapsed time measurement  
operation is in progress, the watch keeps track of the 1/100-second count  
internally. The vLeft Dial Hand will jump to the current 1/100-second reading  
whenever you stop the stopwatch or perform a split time operation.  
6
2. Hold down B for about three seconds until the watch  
beeps.  
This will make the World Time City (NYC in this  
example) your new Home City. At the same time, it  
will change the Home City you had selected prior to  
step 2 (TYO in this example) to your World Time City.  
After swapping the Home City and World Time City,  
the watch will stay in the World Time Mode. The  
xSecond Hand will point to your new World Time City  
(TYO in this example).  
@
6
The nRight Dial Hands will indicate the current time  
in your new World Time City.  
Note  
If your current World Time City supports time calibration signal reception, making it  
your Home City enables calibration signal reception for that city.  
4
 
Operation Guide 5089  
>
6
Using the Alarm  
When the alarm is turned on, an alarm will sound for about 10 seconds each day  
when the time in the Timekeeping Mode reaches the preset alarm time. This is true  
even if the watch is not in the Timekeeping Mode.  
5. After confirming that the nRight Dial Hands are in the  
correct home position, press C. This will advance to  
vLeft Dial Hand home position adjustment.  
The vLeft Dial Hand is in the correct home position if  
it is pointing at 12 o’clock. If it isn’t, use D (+) and B  
(–) to move it to 12 o’clock.  
Hand Functions  
@
6. After confirming that the vLeft Dial Hand is in the  
correct home position, press C. This will advance to  
day home position adjustment.  
The mDay is in the correct home position if it shows  
1. If it doesn’t, use D (+) and B (–) to change the  
day to 1.  
x Second Hand: Indicates the current alarm ON/OFF  
setting.  
v Left Dial Hand: Points to ALM.  
n Right Dial Hands: Indicate the current alarm time  
5
setting in 24-hour format.  
7. Press A to return to the Timekeeping Mode.  
The mDay moves to the current day, and then the zHour Hand and the  
cMinute Hand will move to the current time. Wait until everything stops moving.  
>
6
To change the alarm time setting  
1. Use C to move the vLeft Dial Hand to ALM.  
This indicates the Alarm Mode.  
Troubleshooting  
Hand Movement and Position  
I lost track of what mode the watch is in.  
Refer to “To select a mode”. To return directly to the Timekeeping Mode from any  
other mode, hold down C for about two seconds.  
2. Use D (+) and B (–) to change the alarm time setting.  
Each press of either button will move the nRight Dial Hands one minute.  
Holding down D or B will start high-speed hand movement in the applicable  
direction. To stop high-speed hand movement, press any button.  
The alarm always works based on the time kept in the Timekeeping Mode.  
The watch will return to the Timekeeping Mode automatically if you do not  
perform any operation in the Alarm Mode for about two or three minutes.  
The xSecond Hand is moving at two second intervals.  
All the watch’s hands are stopped at 12 o’clock and none of the buttons work.  
Power may be low. Expose the watch to light until the xSecond Hand starts moving  
normally, at one-second intervals.  
To turn the alarm on or off  
In the Alarm Mode, press A to toggle the alarm on and off. The xSecond Hand will  
indicate the current ON/OFF setting.  
The hands of the watch suddenly start moving at high speed, even when I do  
not perform any operation.  
This could be due to any one of the following causes. In all cases, the hand movement  
does not indicate malfunction, and should stop shortly.  
The watch is recovering from a sleep state.  
To stop the alarm  
Press any button.  
The time setting is being adjusted following a successful auto time calibration  
signal receive operation.  
The watch is returning to the Timekeeping Mode automatically from the Alarm  
Mode.  
Adjusting Home Positions  
Hands suddenly stop moving. Button operation also is disabled.  
The watch may be in the power recovery mode. Do not perform any operation until the  
hands return to their normal positions (in about 15 minutes). The hands should return  
to their correct positions when power recovers. To help power recover, leave the  
watch in a location where it is exposed to light.  
Strong magnetism or impact can cause the hands and/or date of the watch to be  
off, even if the watch is able to perform the signal receive operation. If this happens,  
perform the applicable home position adjustment procedures in this section.  
Hand home position adjustment is not required if the time and day settings are  
correct.  
The current time setting is off by hours.  
Your Home City setting may be wrong. Check your Home City setting and correct it,  
if necessary.  
Note  
Any time after you enter the home position adjustment mode in step 1 of the following  
procedure, you can return to the Timekeeping Mode by pressing A. The watch also  
will return to the Timekeeping Mode automatically if you do not perform any operation  
for about two or three minutes in the home position adjustment mode. In either case,  
any adjustments you made before the watch returned to the Timekeeping Mode will  
be applied.  
The current time setting is off by one hour.  
If you are using the watch in an area where time calibration signal reception is  
possible, see “To configure Home City settings”.  
If you are using the watch in an area where time calibration signal reception is not  
possible, you may need to change your Home City’s STD (standard time)/DST  
(daylight saving/summer time) setting manually. Use the procedure under “To toggle  
the Home City time between standard time and daylight saving time” to change the  
STD/DST setting.  
To adjust home positions  
1. Hold down C for about two seconds until the xSecond  
Hand stops and then starts moving again.  
B
@
+
2. Hold down D for about three seconds.  
The xSecond Hand will start to move when you first  
press D. Keep D depressed until the xSecond  
Hand stops.  
The watch is now in the home position adjustment  
mode.  
The hands and/or day indications are off.  
This could indicate that the watch has been exposed to magnetism or strong impact,  
which has caused problems with proper hand and day alignment. Adjust the watch’s  
hand and day home position alignment.  
World Time Mode  
The watch will exit the home adjustment mode  
automatically if you do not perform any operation for  
about two or three minutes.  
First is xSecond Hand home position adjustment.  
If the xSecond Hand moves to 12 o’clock, it is in the  
correct home position. If it doesn’t, use D to move it  
to 12 o’clock.  
Each press of C in the home position adjustment  
mode will cycle through the adjustment settings as  
shown below.  
The World Time indicated by the nRight Dial Hands in the World Time Mode is  
one hour off from the actual time in the selected World Time City.  
The STD (standard time)/DST (daylight saving/summer time) setting of the selected  
World Time City may be wrong. Select the correct STD (standard time)/DST (daylight  
saving/summer time) setting.  
>
*
6
5
The World Time indicated by the nRight Dial Hands in the World Time Mode  
is off.  
Your Home City settings may be wrong. Check your Home City settings and correct  
them, if necessary.  
xSecond  
mDay  
zHour/ cMinute/ b24-hour  
nRight Dial Hands  
Charging  
The watch does not resume operation after I expose it to light.  
This can happen after the power level drops to Level 3. Continue exposing the watch  
to light until the xSecond Hand starts moving normally (at one-second intervals).  
vLeft Dial Hand  
When adjusting a hand or the date home position, it is recommended that after  
you move to a proper home position, you press B to move the setting back one  
step. Next, press D again to return it to the home position. This helps to ensure  
better home position adjustment accuracy.  
The xSecond Hand starts to move at one-second intervals, but then suddenly  
returns to moving at two-second intervals.  
The watch probably is not sufficiently charged yet. Continue keeping it exposed to  
light.  
3. After confirming that the xSecond Hand is at the proper  
Time Calibration Signal  
B
@
+
home position, press C. This will switch to zHour  
Hand and cMinute Hand home position adjustment.  
The zHour Hand and cMinute Hand are at their  
proper home positions if they both move to 12 o’clock.  
The b24-hour Hand also will move along with  
zHour Hand movement, and cannot be adjusted  
individually. If the hands are not positioned correctly,  
use D (+) and B (–) to move them to their proper  
home positions.  
The information in this section applies only when LON, PAR, ATH, HNL, ANC, LAX,  
DEN, CHI, NYC, HKG, or TYO is selected as the Home City. You need to adjust the  
current time manually when any other city is selected as the Home City.  
The xSecond Hand indicates NO (N) when I check the result of the latest  
receive operation.  
Possible Cause  
Remedy  
You are wearing or moving the watch, or  
performing a button operation during the  
signal receive operation.  
The watch is in an area with poor  
reception conditions.  
Keep the watch in an area where reception  
conditions are good while the signal receive  
operation is being performed.  
4. After confirming that the zHour Hand and cMinute  
Hand are in their correct home positions, press C.  
This will switch to nRight Dial Hands home position  
adjustment.  
*
6
You are in an area where signal reception  
is not possible for some reason.  
See “Approximate Reception Ranges”.  
The nRight Dial Hands are at their proper home positions if they both move  
to 24. If the hands are not positioned correctly, use D (+) and B (–) to move  
them to 24.  
Check the website of the organization that  
maintains the time calibration signal in your  
area for information about its down times.  
The calibration signal is not being  
transmitted for some reason.  
Try again later.  
5
 
Operation Guide 5089  
The current time setting changes after I set it manually.  
City Code Table  
You may have the watch configured for Auto Receive of the time calibration signal,  
which will cause the time to be adjusted automatically according to your currently  
selected Home City. If this results in the wrong time setting, check your Home City  
setting and correct it, if necessary.  
City  
City  
UTC Offset/  
GMT Differential  
City  
Code  
UTC Offset/  
GMT Differential  
City  
Code  
PPG  
HNL  
ANC  
LAX  
DEN  
CHI  
Pago Pago  
Honolulu  
Anchorage  
Los Angeles  
Denver  
–11  
–10  
–9  
–8  
–7  
–6  
–5  
–4  
–3  
–2  
–1  
JED  
THR  
DXB  
KBL  
KHI  
DEL  
DAC  
RGN  
BKK  
HKG  
TYO  
ADL  
SYD  
NOU  
WLG  
Jeddah  
Tehran  
Dubai  
Kabul  
Karachi  
Delhi  
+3  
+3.5  
+4  
+4.5  
+5  
+5.5  
+6  
+6.5  
+7  
+8  
+9  
+9.5  
+10  
+11  
+12  
The current time setting is off by one hour.  
Possible Cause  
Remedy  
Perform the operation under “To get ready  
for a receive operation”. The time setting will  
be adjusted automatically as soon as signal  
reception is successful.  
Chicago  
Signal reception on a day for switching  
between STD (standard time)/DST  
(daylight saving/summer time) may have  
failed for some reason.  
NYC  
SCL  
RIO  
New York  
Santiago  
Rio De Janeiro  
Dhaka  
Yangon  
Bangkok  
Hong Kong  
Tokyo  
Adelaide  
Sydney  
Noumea  
Wellington  
If you are unable to receive the time calibration  
signal, change the STD (standard time)/DST  
(daylight saving/summer time) setting manually.  
FEN Fernando de Noronha  
RAI  
UTC  
LON  
PAR  
ATH  
Praia  
0
London  
Paris  
Athens  
Auto Receive is not performed or I cannot perform Manual Receive.  
+1  
+2  
Possible Cause  
Remedy  
Auto Receive is not performed while the watch  
is in the Stopwatch Mode. Hold down C for  
about two seconds to enter the Timekeeping  
Mode.  
Based on data as of December 2008.  
The rules governing global times (GMT differential and UTC offset) and summer  
time are determined by each individual country.  
The watch is in the Stopwatch Mode.  
Check your Home City setting and correct it,  
if necessary.  
Your Home City setting is wrong.  
There is not enough power for signal  
reception.  
Expose the watch to light to charge it.  
Signal reception is being performed successfully, but the time and/or day is  
wrong.  
Possible Cause  
Remedy  
Check your Home City setting and correct it,  
if necessary.  
Your Home City setting is wrong.  
The watch may have been exposed to  
magnetism or strong impact, which has Adjust the watch’s hand and day home  
caused problems with proper hand and positions.  
day alignment.  
Specifications  
Accuracy at normal temperature: 15 seconds a month (with no signal calibration)  
Timekeeping: Hour, minutes (hand moves every 10 seconds), seconds, 24-hour,  
day, day of the week  
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099  
Other: Home City code (can be assigned one of 29 city codes and Coordinated  
Universal Time); Daylight Saving Time (summer time) / Standard Time  
Time Calibration Signal Reception: Auto receive up to six times a day (5 times a  
day for the Chinese calibration signal; Remaining auto receives  
cancelled as soon as one is successful); Manual receive  
Receivable Time Calibration Signals:  
Mainflingen, Germany (Call Sign: DCF77, Frequency: 77.5 kHz);  
Anthorn, England (Call Sign: MSF, Frequency: 60.0 kHz); Fukushima,  
Japan (Call Sign: JJY, Frequency: 40.0 kHz); Fukuoka/Saga, Japan  
(Call Sign: JJY, Frequency: 60.0 kHz); Fort Collins, Colorado, the  
United States (Call Sign: WWVB, Frequency: 60.0 kHz); Shangqiu City,  
Henan Province, China (Call Sign: BPC, Frequency: 68.5 kHz)  
Stopwatch: Measuring capacity: 23’59.99”  
Measuring unit: 1/100 second  
Measuring mode: Elapsed time, split time  
World Time: 29 cities (29 time zones) and Coordinated Universal Time  
Other: Standard Time/Daylight Saving Time (summer time); Home City/World Time  
City swapping  
Alarm: Daily alarm  
Other: Power Saving  
Power Supply: Solar cell and one rechargeable battery  
Approximate battery operating time: 5 months (no exposure to light after a  
full charge; 10 seconds alarm beeper operation and one signal reception of  
approximately 4 minutes per day)  
6
 

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