USER’S GUIDE 2581/2671

The following explanation covers the radio-controlled timekeeping function only. For other functions, go to the download page for Module 2578,

which is the export model that has the same functions, except for radio-controlled timekeeping.

Viewing the Last Reception Date and Time

In the Timekeeping Mode:

Press the B button.

•This displays the date and time that signal reception was complete and the current time and date were adjusted.

•The month and day screen and hour and minute screen alternate

at two-second intervals.

• To return to the timekeeping screen, press the B button again.

•The display also returns to the normal timekeeping screen automatically if you do not perform any operation for about one or

two minutes.

Home Time

(24-hour format)

2-second interval

Reception date and time

Important!

•The calibration signals received by this watch include two data groups: an hour-minute-second group and a year-month-day group.

•The icon will remain on the display only if the hour-minute- second group and year-month-day group are both received. It will not remain on the display if only the hour-minute-second group is received.

Hour-minute-second group and year-

 

month-day group received

 

displayed
Hour-minute-second group only received

 

not displayed

Turning Auto Reception On and Off

1. Display the setting screen.

In the Timekeeping Mode:

Use the A button to
display the “

”

indicator, and then press the B button.

• This causes the current setting (On or OF) to appear on the display.

2. Turn auto reception on or off.
Press C or A to toggle the auto reception setting on (On) and off (OF).
3. Exit the setting screen.
Press the B button 11 times.

•This exits the setting screen can causes “” to appear

on the display. To return to the timekeeping screen, press the C button once (or the A button six times).

•The display also will return to the normal timekeeping screen automatically if you do not perform any operation for about two or three minutes.

Specifying the Transmitter Selection Mode in Japan

When Tokyo (TYO) is selected as the Home City, you can select either of two different transmitters for reception.

•The initial factory default settings of the watch are TYO (Tokyo) for the Home City, and A/T (auto) for the transmitter selection mode.

1. Display the setting screen.

In the Timekeeping Mode:

Use the A button to

display the “”

indicator, and then press the B button.

• This causes the current auto reception setting (On or OF) to appear on the display.

2. Display the transmitter selection mode setting screen. Press the B button.

•If only the hour-minute-second group is received, the Timekeeping Mode date at the time of reception is recorded as the last reception date.

 

3. Select the transmitter selection mode you want.

Calibration Signal Reception

Troubleshooting

 

 

 

 

 

 

Time setting is incorrect following signal reception.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Precautions

Cannot perform manual reception.

 

 

 

 

Possible Cause:

•

Summer time is turned on or the wrong

 

Use C and A cycle

 

 

 

 

 

 

 

 

 

Home City is selected.

 

through the settings until

 

 

 

• Auto reception can be performed while the watch is in the

Possible Cause:

•

The watch is not in the Timekeeping

Corrective Measures: •

Turn off summer time so the DST

 

the one you want is

 

 

 

Timekeeping Mode or World Time Mode only.

 

 

 

 

Mode or World Time Mode.

 

 

indicator is not on the display.

 

displayed.

 

 

 

• Operating any button while auto reception is in progress will cause

 

 

 

• The Home City is set to a city other than

 

• Configure the watch for the correct DST

 

 

 

 

 

the watch to beep and then exit the receive operation.

 

 

 

 

TYO (Tokyo), NYC (New York), CHI

 

 

setting and Home City setting.

 

 

 

 

 

• Make sure you are within the range of the calibration signal

 

 

 

 

(Chicago), DEN (Denver), or LAX (Los

 

 

 

 

 

 

 

 

 

 

transmitter before performing the receive operation. Remember

 

 

 

 

Angeles).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

that geographic contours, nearby buildings, the season, and the

Corrective Measures: •

Perform manual reception while a time

• If you cannot receive the calibration signal or if the current time

 

 

 

 

 

time of day can make reception impossible even when you are

 

 

 

 

screen is on the display in the Timekeeping

setting is incorrect after signal reception, check the current setup

 

(Back)

(Forward)

within range of the transmitter.

 

 

 

 

Mode or World Time Mode only.

of the watch. The following are the watch’s factory default settings,

 

 

 

 

 

• Proper reception may be impossible if there is something blocking

 

 

 

• Change Home City To TYO (Tokyo), NYC

which are configured automatically whenever you have the battery

 

* A/T

 

 

 

the signal. If reception is unsuccessful, try again.

 

 

 

 

(New York), CHI (Chicago), DEN

of the watch replaced.

 

 

 

 

With this setting, the watch automatically selects either the

• This watch is designed to adjust its current time setting in

 

 

 

 

(Denver), or LAX (Los Angeles).

 

 

 

 

 

 

Mt. Otakadoya signal (40kHz) or the Mt. Hagane signal

accordance with the calibration signals transmitted in Japan and

 

 

 

 

 

 

 

 

 

 

 

 

Auto Receipt

 

 

On

 

 

(60kHz), whichever is strongest.

 

 

 

the United States only. Note that you will need to make your own

The

 

icon is not displayed even though auto reception is

 

 

 

 

* The frequency first used by the watch is the one that was

adjustments when using this watch outside of Japan or the United

turned on.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

last successful.

 

 

 

States, or in any area that is outside the range of one of the

 

 

 

 

 

 

 

 

 

 

 

 

Transmitter

 

 

Auto Japan transmitter select

 

 

 

 

 

Possible Cause:

•

A single receive operation was not

 

 

 

 

 

 

receivable time calibration signal transmitters.

 

 

 

(40kHz/ 60kHz)

 

 

* JPN 40

 

 

 

• When the watch is unable to adjust its time signal using the

 

 

 

 

successful.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

With this setting, the watch always receives the Mt.

 

 

 

calibration signal for some reason, timekeeping accuracy is within

 

 

 

• Both the hour-minute-second group and

Home City

 

 

Tokyo

 

 

Otakadoya signal (40kHz).

 

 

 

±15 seconds per month.

 

 

 

 

year-month-day group were not received.

 

 

 

 

 

 

 

 

• Strong electrostatic charge can cause timekeeping error.

 

 

 

• The watch is not in the Timekeeping

 

 

 

 

 

 

* JPN 60

 

 

 

• Signal reception is cancelled if an alarm starts to sound while it is

 

 

 

 

Mode or World Time Mode when an auto

Summer Time

 

 

Auto (according to signal data)

 

 

With this setting, the watch always receives the Mt. Hagane

being performed.

 

 

 

 

reception time is reached.

 

 

 

 

 

 

signal (60kHz).

 

 

 

• The watch’s calendar shows dates up to the year 2039. Attempting

 

 

 

• You performed manual reception, which

 

 

 

 

 

 

 

 

 

 

a receive operation after that causes an error.

 

 

 

 

clears the

 

 

 

icon from the display.

 

 

 

 

 

 

4. Exit the setting screen.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Corrective Measures: •

Check to

make sure the watch is in a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

location where it can receive the signal.

 

 

 

 

 

 

Press the B button 10 times.

 

 

 

 

 

 

 

•

Place the watch in a location where

 

 

 

 

 

 

 

 

 

 

 

 

 

 

reception conditions are good.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• This exits the setting screen can causes “

” to appear

 

 

 

 

• Make sure that the watch is in the

 

 

 

 

 

 

on the display. To return to the timekeeping screen, press the

 

 

 

 

 

Timekeeping Mode or World Time Mode

 

 

 

 

 

 

C button once (or the A button six times).

 

 

 

 

 

 

 

 

during the auto reception times.

 

 

 

 

 

 

• The display also will return to the normal timekeeping screen

 

 

 

 

•

The

 

icon disappears from the display

 

 

 

 

 

 

automatically if you do not perform any operation for about

 

 

 

 

 

whenever

you change the current time

 

 

2

 

two or three minutes.

 

 

 

 

 

 

 

 

setting manually.