Citizen JY0050 Manual

Table of Contents

 

1.

Your Watch .................................................................................................

9

2.

Before Use ................................................................................................

12

 

• Checking the Reference Position .........................................................

14

3.

Basic Watch Operations ..........................................................................

16

Radio Signal Reception

 

4.

Radio Signal Reception ...........................................................................

18

5.

Poor Reception Areas..............................................................................

23

6.

Display during Reception ........................................................................

24

7.

Confirming Reception Status..................................................................

26

8.

Reception Area Guidelines......................................................................

28

9.

World City Display....................................................................................

33

10. Charge Level Display...............................................................................

38

English

1

Operations in Each Mode

 

11. Changing Mode ........................................................................................

40

12. Using Home Time and World Time .........................................................

42

13.

Using Daylight Saving Time....................................................................

44

14.

Setting the Time (TME) ............................................................................

46

15.

Setting the Calendar (CAL)......................................................................

50

16.

Using the Timer (TMR) .............................................................................

54

17.

Using the Chronograph (CHR) ................................................................

58

18.

Using the World Time Setting (WT-S).....................................................

60

19.

Using the World Time Alarm (AL-1 and 2) .............................................

64

20.

Using the Receive Setting (RX-S) ...........................................................

66

21.

LED Lights ................................................................................................

70

22.

Resetting Your Watch..............................................................................

70

23.

Adjusting the Reference Position...........................................................

72

Using the Slide Rule Bezel ............................................................................

76

Solar Power

 

24.

Solar Power Function ..............................................................................

88

25.

Characteristics of the Solar Powered Watch.........................................

90

 

A. Power Saving Function .......................................................................

92

 

B. Insufficient Charge Warning Function...............................................

94

 

C. Overcharging Prevention Function....................................................

95

 

D. Guide to Charging Time ......................................................................

96

 

E. Handling Your Solar Powered Watch.................................................

98

Troubleshooting

 

 

Radio Signal Reception Function .........................................................

100

 

Eco-Drive.................................................................................................

104

Precautions...................................................................................................

106

26.

Specifications.........................................................................................

112

3

Congratulations and Thank You for your selection of a CITIZEN Eco-Drive watch. To get the most out of your purchase, please be sure to read this manual and keep it on hand for reference.

Once fully charged by exposure to light, your watch will give you years of enjoyment and reliability.

Notice

All repairs performed on this watch are to be performed at the CITIZEN.

When desiring to have your watch repaired or inspected, please contact the Citizen Service Center either directly or through the store where you purchased your watch.

Please use this watch after it has been sufficiently charged by exposure to light.

If the second hand of the watch is moving at two-second intervals, this indicates the watch is insufficiently charged. To ensure proper operation, the watch should be fully charged by placing the watch under direct sunlight for about eight (8) hours. We recommend the watch keep a high charge level to ensure optimum operation.

Charge your watch as indicated in “Guide to Charging Time” (p. 96).

4

5

Part Names (1)

UTC hour hand

Charge level indicator/ radio wave reception indicator

Home time hour hand

Digital display 2 (Displays the home city)

Home time second hand

Mode hand

UTC minute hand

Home time minute hand

Button (B)

24-hour hand

Crown

Button (A)

Digital display 1 (Displays world city/ world time)

• The illustrations shown in this manual may differ from the actual watch you have purchased.

6

Part Names (2): Digital Displays

[Digital display 2]

[Digital display 1]

Home city name

World city name

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Chronograph

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

measurement mark

 

Insufficient charge

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Timer measurement mark

 

warning mark

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

World city time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Alarm setting mark

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Daylight saving time setting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hour/minute/second

 

 

 

 

 

 

 

 

 

 

 

 

 

 

mark

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Morning: A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Afternoon: P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note: To assist in the explanation, all parts of the digital display are shown in the illustration.

7

Part Names (3): Radio Wave Reception Display

NO: Signal reception failed

RX: Reception standby

H, M, L: Reception level/

 

 

reception status

possible: CAL, TME and RX-S

JPN : JJY (Japan)

USA : WWVB (USA)

EUR : DCF77 (Germany)

8

W 1. Your Watch

World Time Eco-Drive Radio Controlled Watch

<Radio Signal Reception Function>

This watch is a radio controlled watch, which receives the standard time radio waves that are broadcast from radio wave transmitters in three regions, Japan, the USA and Europe

(Germany), and uses these waves to automatically correct the time and date.

(p. 18)

i Automatic reception: The watch will automatically receive the radio wave up to three times a day, at 2 a.m., 3 a.m. and 4 a.m., and adjust the time and date accordingly. However, note that if the watch successfully receives the radio wave at 2 a.m., it will not perform automatic reception again at the later times.

The 4 a.m. automatic reception can be changed to any time of the day.

i On demand reception: The radio wave can be received at any time of the day to adjust the time and date.

In the event that a radio signal cannot be received, the watch can be manually set and will operate keeping time within +/- 15 seconds per month.

9

<World Time Function>

i UTC (Coordinated Universal Time), the time and date of 43 cities (or regions) from around

the world and one city (any can be set) can be displayed and easily called up. It is

 

convenient when traveling overseas on business or vacation.

(p. 44)

Daylight saving time can also be set.

<Solar Power Function>

This is a multi-functional Eco-Drive watch, which is equipped with a solar power function for powering the watch by converting light energy into electric energy.

i Charge level display function: This function displays the charge level in four grades, to

give an approximate indication of how much the secondary battery is charged.

(p. 38)

i Power saving function: The watch is equipped with two power saving functions. If the watch face is not exposed to light for 30 minutes or longer, all the LCD display sections turn off (Power saving 1). If the watch face is then not exposed to light for one

week or longer, the hands are stopped in order to minimize the watch’s power consumption

(Power saving 2).

(p. 92)

10

Important Points Regarding Radio Wave Reception

There are two methods to receive radio signals during normal operation, Automatic and On Demand.

The internal unidirectional antenna may be weakened by geography or building structures, which may require the user to place the watch near a window. When receiving radio waves:

*Remove the watch from your wrist

*Face the 9:00 position of the watch towards a window

*Place the watch on a stable surface

*Do not move the watch during this process. Movement of the watch may cause incomplete reception. During radio reception, the second hand of the watch moves in reception level.

*When reception is complete, the watch will return to movement at one-second intervals.

Reception can take from about 2 minutes to a maximum of 15 minutes.

11

Citizen JY0050 Manual

W 2. Before Use

NO: Signal

RX: Reception

Reception level/

reception failed

standby

reception status

H : High

M : Middle

L : Low

Crown in its normal position

Button (A)

Mode hand

[Insufficient charging] [Fully charged]

Charge level indicator

12

Check the movement of the second hand.

The second hand is moving at 1-second intervals.

The second hand is moving at 2-second intervals or is stopped.

Charge the watch sufficiently by placing it in direct sunlight as indicated in Guide to Charging Time(p. 96).

Check the reception status.

Pull out the crown to position 1.

Turn the crown to align the mode hand with TME.

Return the crown to the normal position.

Press the lower right button (A) at the 4:00 position.

(p. 26)

The second hand indicates a reception status of H, M or L

The second hand indicates a reception status of NO

Your watch is correctly receiving the standard time radio wave.

It is ready to use.

Refer to “On Demand Reception” (p. 20) to perform the radio wave reception.

If you are unable to receive radio waves, please inquire to the Citizen Service Center.

13

[Checking the Reference Position]

Before using the watch, confirm that the hands are aligned with “0”, similar to when setting weighing scales

i The reference position may become misaligned when the watch is exposed to strong magnetism, static electricity or impacts. Even if radio waves are received, the correct time will not be indicated unless the watch hands are aligned to the correct reference position. Check that the hands are properly aligned with “0”.

Examples of magnetic products that can affect the watch.

Health products (for example, medical necklaces and waist bands that have magnetic fields)

Refrigerators (magnetic part of the door)

Electromagnetic cookers

Bags (with magnet fasteners)

Mobile phones (speaker part)

Keep the watch away from items similar to those above.

14

1.Pull the crown out to position 1 and turn to align the mode hand with CHR (chronograph mode).

2.Pull out the crown to position 2.

The hands will move rapidly, stopping at the reference position recorded in the watch memory.

Correct reference positions

Charge level indicator: EUR

UTC hour and minute hands: 12:00 Hour, minute and second hands: 12:00:00 24-hour hand: 12:00

3.If the reference position is correct, the check is complete. Press the crown back into its normal position.

If a position is incorrect, refer to “Adjusting the Reference Position” and adjust it to the correct position. (p. 72)

UTC hour and minute hands

Hour, minute

24-hour

and second

hands

hand

Charge level indicator

Mode hand

15

W 3. Basic Watch Operations

*The watch receives the radio wave from the radio wave transmitter located in the home city’s region.

Home time hour hand

Home city (Digital display 2)

1.

Home time

minute hand Check the

charge level.

(p. 38)

Button (B)

Digital display 1

Button (A)

Home time second hand

16

2.

Set the home city.

If the city in which you are situated is displayed in digital display 2,

go to step 3

(1)Pull out the

position 1 and turn to align the mode hand with TME.

(2)Press button (A) or (B) to call up the home city in digital display 1.

(3)Press button (A) and button (B) at the same time to display the home city in digital display 2.

3.

Set the home time.

If the home time is correct,

 

go to step 4

(1) Set the time manually

(p. 46)

(2) Set the time by receiving the radio

wave

(p. 20)

Caution:

If the home city is set to a city that is outside the reception area, the radio wave cannot be received. Turn off the automatic reception and set the time manually.

(p. 66o69)

4.

Set digital display 1.

The world time or date can be displayed on digital display 1. Also, the mode can be switched in order to use the alarm, timer

or chronograph.

(p. 40)

17

W 4. Radio Signal Reception

Three types of radio signal reception are possible: automatic reception, on demand reception and recovery automatic reception.

There are three modes where reception is possible: time (TME), calendar (CAL) and receive set (RX-S). The watch cannot receive signals in any other mode.

Display the home city in digital display 2 when receiving the radio wave.

Reception is not possible unless the crown is in the normal position.

If the home city is “UTC”, reception is not possible.

Reception is not possible during chronograph or timer measurement.

The reception level may change depending on the surrounding environment. While referring to reception level (H, M or L), change the watch location, direction and angle to try to receive the radio wave.

When the watch is receiving the radio wave signal, all of the hands will stop.

To check the time, hold the lower right button (A) for 2 seconds to cancel the radio wave reception. The hands will then return to the current time.

18

Automatic reception

It is not necessary to operate buttons during automatic reception.

The watch will automatically receive the radio wave every day at 2 a.m., 3 a.m. and 4 a.m.

The 4 a.m. reception can be changed to any time of the day. (p. 66o69)

Reception can be set to OFF. (p. 66o69)

<Receiving the radio signals>

1.Remove the watch from your wrist and place on a stable surface in a location, such as near a window, from which radio waves can be easily received, pointing the 9:00 side (reception antenna position) in the direction of the radio wave transmitter.

2.The watch will automatically receive the radio wave every day at 2 a.m.

If it successfully receives the wave, reception is not performed at 3 a.m. and 4 a.m.

An antenna for receiving the radio signals is located inside the watch (on the 9:00 position).

19

On Demand Reception (Manual Reception)

• Signals can be received at any time.

[Mode hand position when receiving]

<Receiving the radio signals>

1.Pull the crown out to position 1 and turn to align the mode hand with the CAL, TME or RX-S position.

2.Return the crown to the normal position.

3.Remove the watch from your wrist and place on a stable surface near a window where the radio signal can be easily received.

4.Point the 9:00 side of the watch in the direction of the radio wave transmitter, and hold down the lower right button (A) for more than 2 seconds. Release when the confirmation tone sounds and the second hand stops at RX. The second hand will then move to H, M or L.

*Do not move the watch during reception.

5.When the radio wave has been properly received, the second hand will automatically move from H, M or L to the time that was received, all the hands will be corrected, and the second hand will return to 1-second interval movement.

20

Recovery Automatic Reception (Automatic Reception)

If the watch stops due to insufficient charging, expose the watch to sunlight to recharge it. When the watch is recharged sufficiently, it will automatically receive the radio wave once.

*Regularly charge your radio controlled watch so it does not become insufficiently

charged.

The radio wave reception can be checked with “Confirming

Reception Status”.

(p. 26)

21

<Storing Your Radio Controlled Watch>

If the watch has received insufficient light for charging or has been kept in a dark location for an extended period of time (one week or more), the Power Save Feature of the watch is activated and the hands of the watch stop. Even though the watch will not show movement, the correct time is kept in memory. When the watch is in the Power Save mode, it will continue to keep the correct time internally. In some instances, “Automatic Reception” may not be successful due to a weak signal reception. When resuming use of the watch after the power save mode has been activated for an extended period of time, you can cancel the Power Save function by placing the watch in light sufficient for charging and performing the “On Demand” reception process to correctly set the time and date. (Refer to page 92 for information on the Power Save Function.)

22

W 5. Poor Reception Areas

It may not be possible to receive radio waves under environmental conditions where reception is difficult or in areas susceptible to radio noise, such as those shown in the illustrations below. While referring to the reception level display, try to find a location with better reception.

 

j Near high-tension electrical

j Inside vehicles, including

j Inside reinforced concrete

lines, railway overhead wires

cars, trains and aero planes

buildings or underground

or communication facilities

 

j Near TVs, refrigerators, computers, fax machines and other home electronics or appliances

j Near cellular

j Extremely hot or cold locations

phones that are

 

in use

23

 

W 6. Display during Reception

[During reception standby]

[Receiving signal]

[Second hand display]

Radio wave reception indicator

j Second hand moves to RX and stops.

The radio wave reception indicator points to the received transmitter.

[Digital display]

j The second hand moves from RX to reception level H, M or L and reception starts.

Off

Off

Repeatedly switches between on and off

24

[Reception completed]

j When the reception is successful, the second hand will return to 1-second interval movement and the other hands will be automatically corrected.

j If the reception fails, RC and NO are displayed.

<Time required for reception>

Reception can take from about 2 minutes to a maximum of 15 minutes, depending on factors such as the weather or noise. If the radio wave reception fails, the watch may return immediately to the normal display.

[Caution] During reception, the second hand may rotate once and show the reception level again.

Do not move the watch until the second hand has returned to 1-second interval movement.

25

[Digital display 2]

W 7. Confirming Reception Status

The result of the radio wave reception can be confirmed.

The daylight saving time setting status of the home city can be confirmed.

1.Set the mode to TME, CAL or RX-S.

2.Press the lower right button (A) once to display the reception status. The second hand will move to H, M, L or NO.

The daylight saving time setting status for the home time is displayed on digital display 2 (flashes alternately between SMT and ON or OFF).

• The radio wave reception indicator points to JPN, EUR or USA.

3. Press the lower right button (A) once.

• The watch returns to the normal time display (1-second interval movement).

• It also returns automatically to normal display if there are no operations for 10 seconds.

26

 

 

 

 

 

 

 

 

 

 

 

Reception

Reception status

 

 

 

 

level

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H

Radio wave reception environment was very

 

 

 

 

 

 

 

 

 

 

 

 

good

 

 

 

 

 

 

 

 

 

 

M

Radio wave reception environment was good

 

 

 

 

 

 

 

 

L

Radio wave reception environment was not very

 

 

 

 

 

 

 

 

 

 

 

 

good

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

Signal reception failed

 

 

 

 

 

 

 

*display may shift slightly depending on the reception environment and

processing even if radio waves are properly received.

*H, M and L indicate the reception status and are not connected to the performance of the watch.

• If NO is indicated, find a location or direction where the reception is better and

 

perform on demand reception again.

(p. 20)

27

W 8. Reception Area Guidelines

This watch can receive standard time radio waves broadcast from Japan (two transmitters), the USA and Europe (Germany).

The standard time radio wave to be received can be changed by selecting the city in another region.

The maps show the approximate reception areas. However, note that the radio wave condition could change due to factors including the weather (such as lightning) and changes in the season or sunrise/sunset time.

The reception area on the map is only guideline, and it may be difficult to receive the radio signal even within the areas indicated on the map.

28

 

Standard time

Transmitter

Frequency

 

radio signal

 

 

 

 

 

 

 

 

 

Ohtakadoya-yama Standard Time Transmitter

40 kHz

 

 

(Fukushima Transmitter)

 

JJY

 

JPN

 

 

Japan

 

 

 

Hagane-yama Standard Time Transmitter

 

 

 

60 kHz

 

 

(Kyushu Transmitter)

 

 

 

 

 

 

 

USA

WWVB

Fort Collins Transmitter, Denver, Colorado

60 kHz

USA

 

 

 

 

 

 

 

EUR

DCF77

Mainflingen Transmitter, Southeast Frankfurt

77.5 kHz

Germany

 

 

 

 

 

 

 

The standard time radio wave this watch uses is broadcast almost continuously 24-hours a day, but may occasionally be interrupted for maintenance.

Even if reception of the standard time radio signal has failed, the watch will continue to be accurate to within ±15 seconds per month.

29

JPN: JJY (Japan) Automatically selects one of the two transmitters

USA: WWVB (USA) Fort Collins: 3,000 km radius from the transmitter

Fukushima Transmitter: 1,500 km radius from the transmitter

 

Kyushu Transmitter: 2,000 km radius from the transmitter

 

30

31

EUR: DCF77 (Germany) Mainflingen: 1,500 km radius from the transmitter

32

W 9. World City Display

UTC (Coordinated Universal Time) and 43 cities (or regions) are registered in this watch in advance, and it is also possible to register one additional city. The time of each city can be called up and displayed.

Press the upper right button (B) while the crown is in position 1 during TME mode or CAL mode to display in sequence from the top left to bottom right the city names shown in “Table of UTC Time Differences” (p. 35), and press the lower right button

(A) to display the city names in sequence from the bottom right to top left.

UTC: Coordinated Universal Time

This is the time of an atomic clock that is used as the global standard (= international atomic time). It uses leap seconds to correct deviations in time systems that are based on the rotation of the Earth (universal time).

33

[Cities and the standard time radio wave assignment]

• The received standard time radio waves shown in “Table of UTC Time Differences” are assigned one of the following three radio wave transmitters, in accordance with the home city in digital display 2.

[Standard time radio wave assignment]

Radio signal transmitter

JPN : JJY (Japan)

Digital display 2

USA : WWVB (USA)

EUR : DCF77 (Germany)

 

Radio wave transmitters are assigned even for countries and regions outside the reception area.

For regions that are assigned Japan’s standard time radio wave (JJY), either the Fukushima transmitter or Kyushu transmitter is selected automatically for reception, whichever is easier to receive.

34

[Table of UTC Time Differences]

Set to TME mode and press the upper right button (B) repeatedly while the crown is in position 1 to display in sequence in digital display 1 the table’s city names from top to bottom, and press the lower right button (A) to display in sequence the city names from bottom to top.

Watch

 

Time

Received

 

 

Time

Received

City name

standard

Watch

City name

standard

display

difference

time radio

display

difference

time radio

 

 

 

 

 

wave

 

 

 

wave

 

 

 

 

 

 

 

 

UTC

Coordinated

0

---

CAI

Cairo

+ 2

EUR

universal time

 

 

 

 

JNB

Johannesburg

+ 2

EUR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LON

London

0

EUR

ATH

Athens

+ 2

EUR

 

 

 

 

 

 

 

 

PAR

Paris

+ 1

EUR

MOW

Moscow

+ 3

EUR

 

 

 

 

 

 

 

 

ROM

Rome

+ 1

EUR

RUH

Riyadh

+ 3

EUR

 

 

 

 

 

 

 

 

BER

Berlin

+ 1

EUR

THR

Tehran

+ 3.5

EUR

 

 

 

 

 

 

 

 

MAD

Madrid

+ 1

EUR

DXB

Dubai

+ 4

EUR

 

 

 

 

 

 

 

 

35

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