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Troubleshooting
The watch cannot receive the time calibration signal.
• Is the signal being transmitted?
Though the Japanese calibration signal (Call Sign: JJY) is
continually transmitted by the National Institute of Information and
Communications Technology (NICT) in theory, it may sometimes
be interrupted for periodic maintenance work, or because of
lightning or other problems.
• Are you within the reception range of a transmitter?
See "Reception Range" for information about areas where the
watch can receive the signal.
• Is there something in the immediate area that may be interfering
with reception?
Even if you are within the reception range of a transmitter, objects
between you and the transmitter or electrical noise can interfere
with reception. Avoid such areas during signal reception. See
"Location" for more information.
• Do you have the correct Home City code selected?
Remember that auto receive is not performed unless TYO
(Tokyo), SEL (Seoul) NYC (New York), CHI (Chicago), DEN
(Denver), or LAX (Los Angeles) is selected as the Home City.
Select the correct Home City code using the procedure under
"Configuring Home Time Settings".
• Is auto receive turned off (OFF)?
Use the procedure under "Configuring Auto Receive Settings" to
turn on auto receive.
• Is the watch in any mode other than the Timekeeping Mode or
World Time Mode during the auto receive times (midnight, 1:00
a.m., 2:00 a.m., 3:00 a.m., 4:00 a.m., and 5:00 a.m.)?
Auto receive is performed only when the watch is in the
Timekeeping Mode or World Time Mode. It is not performed if the
watch is in any other mode.
World Time Mode
World time lets you display the current time in any one of 30 cities
(29 time zones) around the world.
• When you enter the World Time Mode, the screen for the city that
was displayed when you last exited the mode appears first.
• The seconds count in the World Time Mode is linked with the
Timekeeping Mode seconds count.
• The same 12-hour/24-hour format you select for the Timekeeping
Mode time is also applied in the World Time Mode.
Important!
• If the World Time Mode time is incorrect, check the current time
settings in the Timekeeping Mode and the World Time city
settings.
• For more information, see "Configuring Home Time Settings".
Operation Guide 2914
Time calibration signal reception is successful, but the hourly
time signal and current time are slightly off.
• After the watch receives the time calibration signal, it performs an
internal decoding process before updating its time setting.
Because of this, the time setting may be slightly off (within one
second).
Time calibration signal reception is successful, but the current
time is one hour fast.
• Do you have summer time (DST) turned on (ON)? Use the
procedure under "Configuring Home Time Settings" to turn off
summer time.
Time calibration signal reception is successful, but the current
time setting is wrong.
• Is the correct city code selected for your Home City?
If you are in Japan, you should have TYO selected for your Home
City. For other areas, select the correct Home City code using the
procedure under "Configuring Home Time Settings".
❚ To search for a city code
In the World Time Mode, press the D
D (westward) or B
D
D
D
B
B
B
B
(eastward) button.
• This scrolls the available city codes.
• Holding down the B and D buttons scrolls at high speed.
(Eastward)
Current Time in
Selected City
(Westward)
City Code
The auto receive ON/OFF settings don't appear when
configuring auto receive settings.
• Auto receive ON/OFF settings do not appear on the display
unless TYO (Tokyo), SEL (Seoul), NYC (New York), CHI
(Chicago), DEN (Denver), or LAX (Los Angeles) is selected as the
Home City. Use the procedure under "Configuring Home Time
Settings" to select your correct Home City.
The auto receive AUTO, J40, and J60 settings do not appear
when configuring auto receive settings.
• The AT, J40, and J60 transmitter selection mode options are
available only when TYO (Tokyo) is selected as the Home City
code. Use the procedure under "Configuring Home Time Settings"
to select your correct Home City.
What time is auto receive performed?
• Auto receive is performed in the middle of the night, when
reception conditions are best. Before going to bed at night, place
the watch near a window, with its 12 o'clock position facing in the
general direction of the transmitter.
How can I perform manual receive?
• Hold down the lower right D button for about two seconds. The
watch will beep to indicate that manual receive has started. Place
it near a window, with its 12 o'clock position facing in the general
direction of the transmitter.
Using Summer Time (DST)
Summer time, or Daylight Saving Time (DST) as it is known in
some countries, calls for setting clocks ahead one hour during the
summer season. Note that the use of summer time depends on
the country and even the local area.
❚ To turn summer time on or off
1.
In the World Time Mode,
DST Indicator
D
D
D and B
B
B buttons
B
use the D
D
B
to display the screen for
the city code whose
summer time setting you
want to change.
2.
Hold down the A
A button
A
A
A
for about two seconds.
• This toggles summer time on and off.
• The "DST" indicator appears on the display and timekeeping
is advanced by one hour when summer time is turned on.
• You can turn summer time on or off independently for each
World Time Mode city. Note, however, that you cannot turn on
summer time for the "GMT" city code.
• Turning on summer time for your home time city causes the
time shown in the Timekeeping Mode to be advanced by one
hour.
How can I view the last reception date and time?
• In the Timekeeping Mode, press the lower right D button. This
will display the date and time that the time calibration signal was
last received successfully. To return to the Timekeeping Mode,
press the D button again. See "To view the last reception date
and time" for more information.
• Check the auto signal reception setting whenever you have
problems with signal reception or when the time setting produced
by signal reception is incorrect.
• The initial factory default configuration of the reception settings
are shown below. You do not need to change these settings if you
use the watch in Japan.
Auto Japan transmitter select
Auto Receive
(40kHz/ 60kHz)
Home City
Tokyo
Auto switching in accordance
Summer Time
with signal data
World Time City Code List
City
GMT
City
GMT
City Name
City Name
Code
Differential
Code
Differential
Jerusalem
– – –
–11
JRS
+2
Honolulu
Jeddah
HNL
–10
JED
+3
Anchorage
Teheran
ANC
–9
THR
+3.5
Los Angeles
Dubai
LAX
–8
DXB
+4
Denver
Kabul
DEN
–7
KBL
+4.5
Chicago
Karachi
CHI
–6
KHI
+5
NYC
New York
DEL
Delhi
–5
+5.5
CCS
Caracas
DAC
Dakar
–4
+6
RIO
Rio de Janeiro
RGN
Yangon
–3
+6.5
– – –
BKK
Bangkok
–2
+7
– – –
–1
HKG
Hong Kong
+8
GMT
+0
Greenwich Mean Time
SEL
+9
Seoul
LON
+0
London
TYO
+9
Tokyo
PAR
+1
Paris
ADL
+9.5
Adelaide
Berlin
BER
+1
SYD
+10
Sydney
Athens
ATH
+2
NOU
+11
Noumea
Cairo
CAI
+2
WLG
+12
Wellington
• The contents of the above table are current as of June 2004.
• Time differentials in the above table are in accordance with
Universal Time Coordinated (UTC).
5
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