MA0910-EA
Operation Guide 5088
Power Levels
Congratulations upon your selection of this CASIO watch.
B
+
You can get an idea of the watch’s power level by
observing the movement of the xSecond Hand in the
Timekeeping Mode.
If the xSecond Hand is moving normally in one-second
intervals, power is at Level 1.
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.
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.
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.
@
5
Moving at two-second
intervals.
About This Manual
Button operations are indicated using the letters A
through D shown in the illustration.
B
@ +
Level Hand Movement
Function Status
1
Normal.
All functions enabled
Hand Functions
z Hour Hand
x Second Hand
c Minute Hand
v Upper Left Dial Hand
b Lower Left Dial Hands
n Right Dial Hand: Indicates the current mode.
m Day
xSecond Hand moving at two-second
intervals.
Beeper and time calibration signal
reception disabled
2
mDay changes to 1 (home position).
xSecond Hand stopped.
zHour Hand and cMinute Hand stopped
at 12 o’clock.
3
All functions disabled
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.
>
*
6
5
This User’s Guide uses numbers shown above to identify
watch hands and indicators.
Power Recovery Mode
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.
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.
Things to check before using the watch
1. Hold down C for about two seconds to enter the Timekeeping Mode, and
then observe the movement of the xSecond Hand.
Is the xSecond Hand moving smoothly in one-second intervals?
NO
YES
Charging Times
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?
Level Change *2
Daily
Level 3
Level 2
Level 1
Exposure Level (Brightness)
Operation
*1
YES
NEXT
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
24 hours
90 hours
30 minutes
6 hours
8 hours
92 hours
Window sunlight on cloudy day
(5,000 lux)
48 minutes
8 hours
– – –
– – –
2. Check the Home City and the daylight saving time (DST) setting.
Indoor fluorescent lighting (500 lux)
Use the procedure under “To configure Home City settings” to configure your Home
City and daylight saving time settings.
* 1 Approximate exposure each day to generate power for normal daily operation.
* 2 Approximate exposure to take power up one level.
The above exposure times all are for reference only. Actual exposure 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”.
Elapsed Time in Dark
Operation
The watch is now ready for use.
60 to 70 minutes (second hand
sleep)
xSecond Hand only is stopped at 12 o’clock, all other
For details about the watch’s radio controlled timekeeping feature, see “Radio
Controlled Atomic Timekeeping”.
functions are enabled.
All functions, including analog timekeeping, disabled
Internal timekeeping maintained.
6 or 7 days (function sleep)
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.
Charging the Watch
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.
To recover from the sleep state
Move the watch to a well-lit area or press any button.
Charging Guide
Whenever you are not
wearing the watch, be sure
to leave it in a location
where it is exposed to light.
Best charging
performance is achieved
by exposing the watch to
light that is as strong as
possible.
When wearing the watch,
makes 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.
Radio Controlled Atomic Timekeeping
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!
If your Home City Code setting
is this:
The watch can receive the signal from the
transmitter located here:
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
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
Important!
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.
Important!
The areas covered by HNL and ANC are quite far from the calibration signal
transmitters, so certain conditions may cause reception problems.
When HNL or HKG is selected as the Home City, only the time and date are
adjusted according to the time calibration signal. You need to switch manually
between standard time and daylight saving time (DST) if required. See “To toggle
the Home City time between standard time and daylight saving time” for information
about how to do this.
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.
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Operation Guide 5088
To select a mode
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.
Press C to cycle between the modes as shown below. The nRight Dial Hand
indicates the currently selected mode.
Timekeeping Mode
C
Stopwatch Mode
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.
The hand indicates
the day of the week
(SU, MO, TU, WE, TH,
FR, SA).
The hand points to 0.
At this time, the nRight Dial Hand will indicate the
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6
Alarm Mode
World Time Mode
6
Home City’s current daylight saving time setting (STD
or DST).
The hand points to AL.
The hand points to
STD or DST.
2. Change the Home City and daylight saving time (DST)
settings, if you want.
B
@ +
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.
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.
Year
(tens)
Year
(ones)
Home city/DST
Hour/Minute
B
@ +
Hand Functions
z Hour Hand
Day
Month
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6
x Second Hand
c Minute Hand
v Upper Left Dial Hand: Indicates the current hour in
the Home City time in 24-hour
format.
b Lower Left Dial Hands:
Indicate the current time in the World Time City in
24-hour format.
3. Press C.
The watch will beep, and the xSecond Hand and nRight Dial Hand will move
to their 12 o’clock positions. This is the time setting mode.
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 vUpper Left Dial Hand and zHour Hand move in sync with each other.
When setting the time, make sure that the vUpper Left Dial Hand indicates the
proper a.m./p.m. hour.
>
*
6
5
n Right Dial Hand: Indicates the day of the week.
m Day
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”.
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).
5. After the time setting is the way you want, press A to return to the Timekeeping
Mode.
This will cause the xSecond Hand to move automatically to 12 o’clock and
resume movement from there.
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.
To change the current date 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.
00 10
@
20
30
40
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.
90
80
This indicates the city code setting mode.
2. Press C twice.
The watch will beep and change to the year
setting mode.
B
+
The watch will exit the setting mode automatically if
you do not perform any operation for about two or
three minutes.
The year can be set in the range of 2000 to
2099.
For details about city codes, see the “City Code
70 60 50
Table”.
Setting the year (tens digit)
3. Use D to change the tens digit of the year setting.
Each press of D will move the xSecond Hand
and change the tens digit of the year setting.
2. To change the Home City setting, press D to move the
xSecond Hand clockwise.
Keep pressing D until the xSecond Hand is pointing
at the city code you want to select as your Home City.
Each time you select a city code, the zHour Hand,
cMinute Hand, vUpper Left Dial 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.
0
1
4. After the tens digit of the year setting is the way
you want, press C.
The watch will beep and change to the ones
digit of the year setting mode.
@
>
@
6
5
2
3
4
5. Use D to move the xSecond Hand to the ones
digit of the year setting you want.
Each press of D will move the xSecond Hand
and change the ones digit of the year setting.
9
8
3. Press B to toggle the time for the currently selected city code between STD
(standard time)/DST (daylight saving time).
In the city code setting mode, the nRight Dial Hand indicates the current
daylight saving time setting as STD (standard time) or DST (daylight saving
time).
Note that you cannot switch between STD (standard time)/DST (daylight saving
time) while UTC is selected as your Home City.
6. After the year setting is the way you want, press
C.
The watch will beep and change to the month
setting mode.
7
6
5
Setting the year (ones digit)
4. After all the settings are the way you want, press A to return to the Timekeeping
Mode.
Dec
7. Use D to move the xSecond Hand to the
Nov
Jan
month setting you want.
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
vUpper Left Dial Hand move to the current time for that city code. Do not
perform the next operation until these hands stop moving.
8. After the month setting is the way you want,
press C.
The watch will beep and change to the day
setting mode.
Oct
Feb
Sep
Aug
Mar
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).
In the city code setting mode, the vRight Dial Hand indicates the current
daylight saving time setting as STD (standard time) or DST (daylight saving
time).
Note that you cannot switch between STD (standard time)/DST (daylight saving
time) while UTC is selected as your Home City.
Apr
@
Jul
May
Jun
Setting the month
3. After the setting is the way you want, press A to return to the Timekeeping Mode.
Note
After you specify a city code, the watch will use UTC* offsets in the World Time
Mode to calculate the current time for other time zones 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.
* Coordinated Universal Time, the world-wide scientific standard of timekeeping. The
reference point for UTC is Greenwich, England.
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Operation Guide 5088
To specify standard time or daylight saving time (DST) for a city
@
9. Use D (+) and B (–) to change the mDay setting.
1. In the World Time Mode, use D to select the city code
whose setting you want to change.
Wait until the bLower Left 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.
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”.
10. After the settings are the way you want, press A to
return to the Timekeeping Mode.
2. Hold down A for about two seconds until the watch
beeps. This will cause the nRight 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 time) while UTC is
selected as the World Time City.
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 nRight Dial
Hand changes automatically in accordance with the
date (year, month, and day).
*
6
5
6
Hold down
A for two
seconds
Note
Note that the STD (standard time)/DST (daylight
saving time) setting affects only the currently
selected city code. Other city codes are not affected.
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.
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.
Using the Stopwatch
The stopwatch measures elapsed time and split times.
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).
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Hand Functions
@
x Second Hand: Indicates the stopwatch 1/10-second
count.
Home City
World Time City
b Lower Left Dial Hands: Indicate the stopwatch minutes
Tokyo
New York
9:08 a.m.
(Daylight saving time)
and seconds.
Before
swapping
10:08 p.m.
n Right Dial Hand: Indicates the stopwatch 1/100-second
(Standard time)
count.
New York
9:08 a.m.
(Daylight saving time)
Tokyo
After
swapping
10:08 p.m.
To perform elapsed time measurement
(Standard time)
1. Use C to move the nRight Dial Hand to 0.
*
6
2. Now you can perform either of following stopwatch
operations.
To swap your Home City and World Time City
1. In the World Time Mode, use D to select the World
Time City you want.
To perform an elapsed time operation
In this example, you would move the xSecond Hand
to NYC in order to select New York as the World
Time City.
B
B
B
B
D
Start
Stop
(Restart)
(Stop)
Reset
Wait until the bLower Left 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.
To pause at a split time
B
B
D
D
Normal stopwatch hand movement will
resume automatically after five seconds.
*
@
Start
Split
Stop
Reset
2. Hold down B for about three seconds until the watch
beeps.
Note
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).
The Stopwatch Mode can indicate elapsed time up to 23 minutes, 59.99 seconds.
D button operation (split, reset) is disabled while hands are moving at high speed
following a reset operation and when transitioning from a split time back to normal
elapsed timekeeping.
Once started, stopwatch timing continues until you press B to stop it, even if you
exit the Stopwatch Mode to another mode and even if timing reaches the stopwatch
limit defined above.
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 12 o’clock.
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.
The bLower Left 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.
Though the nRight 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 nRight Dial Hand will jump to the current 1/100-second reading
whenever you stop the stopwatch or perform a split time operation.
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.
Checking the Current Time in a Different Time Zone
You can use the World Time Mode to view the current time in one of 29 time zones
around the globe. The city that is currently selected in the World Time Mode is called
the “World Time City”.
Hand Functions
x Second Hand:
Indicates the current alarm ON/OFF setting.
b Lower Left Dial Hands:
Indicate the current alarm time setting in 24-hour
format.
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Hand Functions
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x Second Hand:
Indicates the currently selected World Time City.
n Right Dial Hand: Points to AL.
b Lower Left Dial Hands:
Indicate the current time in the selected World Time
City in 24-hour format.
n Right Dial Hand:
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6
Indicates the current STD (standard time) or DST
(daylight saving time) setting of the currently selected
time zone.
To change the alarm time setting
1. Use C to move the nRight Dial Hand to AL.
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6
2. Use D (+) and B (–) to change the alarm time setting.
Each press of either button will move the bLower Left 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.
To view the time in another time zone
1. Use C to move the nRight Dial Hand to STD or DST.
The xSecond Hand will move to the city code of the currently selected World
Time City.
2. Use D to move the xSecond Hand to the city code you want to select as the
World Time City.
The bLower Left Dial Hands will move to the current time in the time zone of
the current city code. At this time, the zHour Hand and cMinute Hand will
continue to indicate the current time in the Home City.
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.
For full information on city codes, see the “City Code Table”.
If you think that the time indicated for the selected time zone 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.
To stop the alarm
Press any button.
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Operation Guide 5088
Auto Correction of Hand Home Positions
Strong magnetism or impact can cause the hands and/or day setting to be off, even
if the watch is able to perform the signal receive operation. Auto correction of hand
home positions correct the hand position automatically.
Auto correction is performed in the Timekeeping Mode only.
Auto correction corrects the positions of the zHour Hand, cMinute Hand, and
xSecond Hand. For the dial hands and day, you must perform the manual
adjustment procedure under “Adjusting the Home Positions Manually”.
Each hour, the watch performs automatic correction of the hand positions from –55
minutes to +5 minutes.
You also can trigger auto correction of hand home positions manually, if you want.
See “To trigger auto correction of hand home positions” for more information.
Auto correction of hand home positions can take up to three and a half minutes to
complete.
5. After confirming that the bLower Left Dial Hands are in
the correct home positions, press C. This will advance
to nRight Dial Hand home position adjustment.
The nRight 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.
6. After confirming that the nRight 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.
*
6
5
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 move to the current time. Wait until everything stops moving.
If hand positions are off by one hour or more, correct them using the procedure
under “To trigger auto correction of hand home positions” or “Adjusting the Home
Positions Manually”.
To trigger auto correction of hand home positions
Troubleshooting
Perform the following procedure when the time setting
@
Hand Movement and Position
is off.
■ 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.
In the Timekeeping Mode, hold down D for about six
seconds until the xSecond Hand completes one full
revolution.
Though the xSecond Hand will stop momentarily about
three seconds after you hold down D, do not release
the button yet. Wait until the xSecond Hand completes
a full revolution before you release D.
To interrupt an ongoing correction operation and return
to the Timekeeping Mode, press D again.
■ 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.
■ The hands of the watch suddenly start moving at high speed, even when I do
not perform any operation.
If you release D when the xSecond Hand stops the first time (after about three
seconds) in the above operation, the watch will enter the home position adjustment
mode, which is described under “Adjusting the Home Positions Manually”. If this
happens, press A to return to the Timekeeping Mode and then perform the above
operation again.
Manually triggered auto correction of hand home positions performs the following
two steps.
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.
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.
1. The hands will move automatically in order to determine the home positions of the
watch.
■ 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 normal operation returns. To help power recover, leave
the watch in a location where it is exposed to light.
2. After the hand home positions are determined, the watch will return to normal
timekeeping automatically. This completes the correction operation.
■ 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.
Adjusting the Home Positions Manually
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.
You also can use auto correction of the hand home positions to correct the home
positions of the zHour Hand, cMinute Hand, and xSecond Hand.
■ 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 in 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 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.
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 home position adjustment mode. In either case, any
adjustments you made before the watch returned to the Timekeeping Mode will be
applied.
■ 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
To adjust the home positions
1. Hold down C for about two seconds until the watch beeps twice and enters the
Timekeeping Mode.
■ The World Time indicated by the bLower Left Dial Hands in the World Time
Mode is one hour off from the actual time in the selected time zone.
The STD (standard time)/DST (daylight saving time) setting of the selected World
Time City may be wrong. Select the correct STD (standard time)/DST (daylight saving
time) setting.
2. Hold down D for about three seconds until the watch beeps.
@
The watch is now in the home position adjustment
mode.
■ The World Time indicated by the bLower Left Dial Hands in the World Time
Mode is off.
Your Home City setting may be wrong. Check your Home City setting and correct it,
if necessary.
The watch will exit the 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.
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).
■ 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
xSecond
mDay
zHour/ cMinute/ v24-hour
bLower Left Dial Hands
light.
nRight Dial Hand
Time Calibration Signal
The information in this section applies only when LON, PAR, ATH, HNL, ANC, LAX,
DEN, CHI, NYC, HKG, or TYO is selected at the Home City. You need to adjust the
current time manually when any other city is selected as the Home City.
3. After confirming that the xSecond Hand is at the proper 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 vUpper Left Dial 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 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.
4. After confirming that the zHour Hand and cMinute
Keep the watch in an area where reception
conditions are good while the signal receive
operation is being performed.
B
+
Hand are in their correct home positions, press C. This
will switch to bLower Left Dial Hands home positions
adjustment.
You are in an area where signal reception is
not possible for some reason.
The bLower Left Dial Hands are at their proper home
positions if they both move to 12 o’clock. If the hands
are not positioned correctly, use D (+) and B (–) to
See “Approximate Reception Ranges”.
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.
move them to 12 o’clock.
Try again later.
>
*
5
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Operation Guide 5088
■ 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/
City
UTC Offset/
City
Code
GMT Differential
Code
GMT Differential
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
NYC
SCL
RIO
New York
Santiago
Rio De Janeiro
Dhaka
Signal reception on a day for switching
between STD (standard time)/DST (daylight
saving time) may have failed for some
reason.
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 time) setting
manually.
FEN Fernando de Noronha
RAI
UTC
LON
PAR
ATH
Praia
0
London
Paris
Athens
+1
+2
■ Auto Receive is not performed or I cannot perform Manual Receive.
Possible Cause
Remedy
Based on data as of June 2009.
The rules governing global times (UTC offset and GMT differential) and summer
time are determined by each individual country.
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.
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 day positions.
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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