Citizen U10 Instruction Manual
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Citizen U10 Instruction Manual

Citizen U10 Instruction Manual

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CONTENTS
- General Diving Precautions - ........................... 8
..................................................... 13
............................................................ 15
[Digital Display] .................................................. 19
............................................. 20
3. Continuous Operating Time ......................... 22
............................................................ 24
[Overcharge Prevention Function] ................... 26
[Power Save 1 Function] .................................. 27
[Power Save 2 Function] .................................. 28
[Standard Mode] ................................................ 29
1. Time/Date Mode ......................................... 29
2. Surface Mode ............................................. 29
3. Travel Time Mode ...................................... 29
4. Alarm 1, 2 and 3 Modes ............................ 29
5. Dive Alarm Setting Mode .......................... 29
6. Diving Log Recall Mode ............................ 29
2
....... 6
... 14
................................ 18
............ 29
[Diving Mode] ..................................................... 30
1. Diving Ready 1 Status ............................... 30
2. Diving Ready 2 Status ............................... 30
Depth of within 1 m (4 ft) After Diving ..... 31
....................................... 32
............................ 34
1. Using the Time/Date Mode ............................ 34
A. Setting the Time and Date ........................ 34
2. Using the Surface Mode ................................ 37
3. Using the Travel Time Mode ......................... 39
A. Setting Travel Time ................................... 39
Time/Date Modes ...................................... 41
4. Using the Alarm Mode ................................... 43
A. Setting the Alarm ...................................... 44
............................................. 46
Using the Watch when Diving .......................... 48
Precautions Before Diving ................................ 51
Precautions During Diving ................................ 52
Precautions After Diving ................................... 53
................................................... 54
1. Diving .............................................................. 54
2. Measurement of Water Depth ....................... 55
3. Measurement of Dive Time ........................... 56
5. Recording of Log Data .................................. 57
6. Termination of the Diving Mode ................... 57
................................... 58
which Main Dive Alarm Function are Activated ... 59
............
.......................... 48
............
3

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  • Page 1: Table Of Contents

    CONTENTS [Diving Mode] ............. 30 1. Diving Ready 1 Status ....... 30 2. Diving Ready 2 Status ....... 30 ..6 Safety Precautions: Observe at All Times 3. Water Depth Measurement Status ... 31 - General Diving Precautions - ......8 4.
  • Page 2 2. Explanation of Dive Alarm Functions ..60 ... 75 Using the Diving Log Recall Mode <Digital Display Error> ........60 A. Log Data Display Range ....... 76 B. Recalling Log Data ........77 When a Digital Display Error Occurs While Diving: ............

  • Page 3: Safety Precautions: Observe At All Times

    The types of matters to be observed are classified CITIZEN. When desiring to have your watch repaired and explained using the following mark (the or inspected, place contact the Citizen Service Center following indicates two examples of icons).

  • Page 4: General Diving Precautions

    - General Diving Precautions - - Precautions Relating to Use of this Watch - WARNING DANGER • In the case of using this watch for diving, always make sure to receiving the proper diving training • This watch is not equipped with a function that from a licensed instructor to acquire the indicates decompression diving.
  • Page 5 WARNING WARNING In the case of using this watch for diving, always Always make sure to inspect all functions of the make sure to use the watch in combination with watch before each dive to prevent malfunctions and other diving instruments (dive table, divers' watch, accidents caused by the use of improper settings.

  • Page 6: Introduction

    Introduction WARNING Thank you for your purchase of this Citizen AQUALAND In the case you happen to engage in decompression Eco-Drive watch. Please make sure to read this manual diving, immediately begin ascending to the surface carefully before using your watch to ensure that it is used while observing an ascent rate of no more than 9 m properly.

  • Page 7: Expose The Watch To Light Before Using

    Expose the Watch to Light Features Before Using This watch is provided with various convenient functions for diving. Sufficiently charge the watch by exposing it to sunlight 1. Measurement begins automatically and parameters or other light before using until the function hand including depth, water temperature, dive time and indicates level 5.
  • Page 8 Other Convenient Functions Power Save 1: The second hand stops at the 12:00 position to save on power. 1. Travel Time Function: This function lets you easily Power Save 2: The hour hand, minute hand and display the local time when traveling overseas or second hand stop at the 12:00 position to further save traveling on business.

  • Page 9: Names Of Components

    Names of Components [Digital Display] • A dot matrix display using a nematic liquid crystal is used for the digital display. • This nematic liquid crystal automatically scrolls the digital display from top to Daylight City name savings time bottom when displaying a mode or when making corrections.

  • Page 10: Charge Level Indicator And Continuous Operating Times

    Charge Level Indicator and 1. Reading the Charge Level Indicator Continuous Operating Times The charge level of the secondary battery changes according to the conditions of use, the passage of time and The charge level indicator (reference value) lets you confirm the manner in which the watch is recharged.

  • Page 11: General Reference For Charging Times

    2. General Reference for Charging Times The time required for charging varies according to the model of the watch (color of the dial, etc.). The following times are shown below to serve only as a reference. Charging time Approx. charging Charging time until Charging time to Illuminance...

  • Page 12: Unique Functions Of Solar-Powered Watches

    Unique Functions of Solar-Powered Watches When the watch has become insufficiently charged, it changes from the normal hand display to the insufficient charge warning display (the second hand moves at 2- second intervals and "Charge" is displayed on the digital display).

  • Page 13: [Insufficient Charge Warning Function]

    [Insufficient Charge Warning Function] [Power Save 1 Function] ··· The second hand stops When the watch becomes insufficiently charged, the at the 0 seconds position when the Power Save 1 second hand changes from 1-second interval movement function is activated. to 2-second interval movement.

  • Page 14: [Power Save 2 Function]

    Watch Display Modes [Power Save 2 Function] ··· The hour and minute hands stop at the 12:00 position when power save 2 is (Functions) activated. [Standard Mode] If the watch remains in the power save 1 mode for 7 The watch is normally used in this mode. The standard days, it switches to the power save 2 mode to further mode contains the modes indicated below.

  • Page 15: [Diving Mode]

    [Diving Mode] 3. Water Depth Measurement Status • The current time, depth, water temperature and dive time When the water sensor detects water, the watch are displayed on the digital display. automatically switches to the Diving Ready “READY • Hour hand: Stops at 6:00 to indicate that measurement of Display”.

  • Page 16: Switching The Mode

    Switching the Mode [NOTE] • The surface mode is not displayed after measuring for 24 hours. • The watch mode switches in the order of the Time/Date, • The watch automatically returns to the time/date mode from Surface, Travel Time, Alarm 1, Alarm 2, Alarm 3, Dive any mode when none of the buttons have been pressed for Alarm Setting, Diving Log Recall and Reference about 1 minute in a mode other than the time/date mode.

  • Page 17: Using The Standard Mode

    Using the Standard Mode (3) Correct the flashing location by pressing button (B) or button (A). 1. Using the Time/Date Mode • The display moves forward by one each time button This mode indicates the time with the hands and displays (B) is pressed.

  • Page 18: Using The Surface Mode

    2. Using the Surface Mode • The display returns to “0 seconds” when button (A) is The surface mode displays the elapsed time from pressed while correcting the “digital seconds”. The completion of the most recent dive (surface rest time). second hand moves when button (B) is pressed.

  • Page 19: Using The Travel Time Mode

    3. Using the Travel Time Mode [The surface mark is displayed in the time/date mode while the surface mode is operating.] This mode is used to display the time and date of a selected city by selecting a city name from UTC and 42 <Time/date display>...

  • Page 20: Switching Between Travel Time And Time/Date Modes

    <Travel Time> <Setting a city name> B. Switching Between Travel Time and Time/Date Modes City names and times displayed in the travel time mode can be easily switched with city names and times ((C)) displayed in the time/date mode. • The time and date for a frequently traveled city displayed in the travel time mode can be displayed directly in the time/date mode by setting that city in the travel time mode and then switching to that city when traveling.

  • Page 21: Using The Alarm Mode

    4. Using the Alarm Mode <Procedure> (1) Press buttons (A) and (C) simultaneously for about 2 The procedures for setting the alarm and operating the seconds in the travel time mode. Alarm 1, Alarm 2 and Alarm 3 modes are the same. Only •...

  • Page 22: Setting The Alarm

    A. Setting the Alarm (3) The flashing location is corrected by pressing button (1) When button (C) is pressed for about 2 seconds in the (A) or (B). normal alarm mode display, ON or OFF flashes on the • The display moves forward by 1 each time button (B) digital display and the watch enters the correction is pressed.

  • Page 23: Displayed Cities

    Displayed Cities The following city names are registered in this watch. These city names are displayed in each of the time/date, travel time, alarm 1, alarm 2 and alarm 3 modes of the standard mode. • City names are displayed moving in the direction in which the time difference increases when button (B) is pressed or city names are displayed in the direction in which the time difference decreases when button (A) is...

  • Page 24: Precautions During Diving

    Precautions During Diving 4. The use of this watch for diving is limited to recreational diving (no-decompression diving) at a WARNING water temperature of 0˚C to +40˚C (32˚F to 104˚F). Do not use this watch for the following types of Using the Watch when Diving diving: The water depth measurement function of this watch is...

  • Page 25: Prohibited Matters When Using During Diving

    PROHIBITED WARNING Prohibited Matters When Using During Precautions Before Diving Diving 1. Always make sure to inspect all functions of this Do not use this watch for diving in the following cases. watch prior to diving. • Is the function hand indicating a charge level 5 or 1.

  • Page 26: Precautions During Diving

    WARNING WARNING Precautions During Diving Precautions After Diving 1. Avoid ascending too rapidly. 1. Avoid flying in an airplane when the surface mode • A rapid ascent can cause decompression sickness and is operating. other detrimental effects on the body. Maintain a •...

  • Page 27: Diving Terms

    Diving Terms <High-Altitude Diving and High-Altitude Setting> 1. Diving High-altitude diving refers to diving at a high location 300 m (1,000 ft) above sea level (such as in lakes, ponds or <No-Decompression Diving and No- rivers). When diving in freshwater, water depth is Decompression Limit Time (NDL)>...

  • Page 28: Measurement Of Dive Time

    3. Measurement of Dive Time 4. Measurement of Water Temperature The elapsed time of a dive to a depth of greater than 1.0 m Water temperature can only be measured while in the (4 ft) is displayed. water. Measurement of water temperature begins after the water depth exceeds 1.0 m (4 ft), and the most recent <Dive Time>...

  • Page 29: Dive Alarm Functions

    Dive Alarm Functions 1. Main Types of Dive Alarms and Situations in which Main Dive Alarm This watch is equipped with various dive alarm functions Function are Activated to avoid danger and problems as much as possible during The following indicates the main alarm functions provided diving.

  • Page 30: Explanation Of Dive Alarm Functions

    2. Explanation of Dive Alarm Functions When a Digital Display Error Occurs While Diving: <Digital Display Error> (1) The following functions are restricted during this error: The display is not updated if there is defective continuity • Depth and water temperature measurements are not in the digital display caused by a strong impact.

  • Page 31: Water Sensor Error

    <Water Sensor Error> <Water sensor <Measurement Error (0 m/0 ft Detection)> error> A water sensor error occurs and the Initial 0 m/0 ft detection: This refers to the value serving alarm mark is displayed when the water as the reference water depth, and atmospheric pressure is sensor remains ON for more than 60 detected every 5 minutes when on land.

  • Page 32: Diving Log Memory Error

    <Diving Log Memory Error> <Charge Alarm> • A “LOG**. ERROR” is displayed when the number of Try to keep the watch charged at level 5 at all times. log data approaches the predetermined log capacity. When Low Charge is Displayed during Diving: When this capacity is reached, the [ ] error mark is The low charge mark is displayed on the digital display.

  • Page 33: When The Insufficient Charge Alarm Is Displayed While Diving

    When the Insufficient Charge Alarm is <Depth Measurement Error> Depth is judged to be in error and the [ ] error mark is Displayed While Diving: displayed if the difference between the measured depth The second hand changes from 1-second to 2-second and the depth measured one second earlier is ±4 m (13 ft) interval movement.

  • Page 34: Ascent Rate Alarm

    Using the Diving Mode <Ascent Rate Alarm> <Ascent rate alarm This alarm is activated when the This mode is for measuring depth while diving. display> ascent rate exceeds 9 m (30 • The "Alarm Depth" and "Alarm Time" can be set in the ft)/minute.

  • Page 35: Setting Dive Alarms

    B. Setting Dive Alarms (4) The depth alarm and dive time alarm are corrected by (1) When button (C) is pressed for about 2 seconds in the pressing button (B) or (A). dive alarm setting mode, "ON or OFF" flashes on the •...

  • Page 36: Switching To The Diving Mode

    2. Switching to the Diving Mode [The display changes in the following manner • The watch automatically switches to "Diving Ready according to dive status] 1" of the diving mode when the water sensor detects water. The watch cannot be switched to the diving When water sensor mode by pressing a button.

  • Page 37: Using The Diving Log Recall Mode

    Using the Diving Log Recall WARNING Mode • Always make sure to check that all functions of the • Recorded log data are automatically displayed in the watch are operating properly before starting a dive. diving mode. • Check that the function hand indicates "Charge Level 5". •...

  • Page 38: Log Data Display Range

    A. Log Data Display Range B. Recalling Log Data • Log number: 01 to 99, 00, 01, 02 . . . (1) The most recent log data is displayed when the watch • Log data: Maximum of 20 sets is switched to the diving log recall mode. •...

  • Page 39: Log Number

    C. Log Number E. Regardig Log Data • Log numbers are displayed using two digits, and are recorded from "01" to "99". After log number "99", logs CAUTION are recorded as "00", "01", "02" and so on. • When 20 sets of log data have been recorded, the oldest •...

  • Page 40: Reference Position Check Mode

    Reference Position Check Mode [Correcting Reference Position of Each Hand] (1) Switch the watch to the "Reference Position Check" This mode is used to check that all of the watch hands, mode. including the function hand, are at the correct positions to (2) Press button (C) for about 2 seconds or more.

  • Page 41: Troubleshooting

    Troubleshooting Problem Possible Cause Corrective Action Reference Log data • The watch has • Is the water • Dive Alarm does not not switched to sensor still wet? Functions Problem Possible Cause Corrective Action Reference accurate- the diving mode Check for the ly reflect for some reason presence of...
  • Page 42 Problem Possible Cause Corrective Action Reference Problem Possible Cause Corrective Action Reference Second • The charge of • Sufficiently • Charge Mode • Is dirt or debris • Have the watch • Using the hand the secondary charge the watch Level Indi- does not trapped between...

  • Page 43: Meanings Of Frequently Displayed Mode Marks And Digital Display

    Meanings of Frequently Alarm Depth Correction Mark: This is displayed when correcting the alarm depth in Displayed Mode Marks and the dive alarm setting mode. Digital Display Dive Time Correction Mark: This is displayed when correcting the alarm time in the dive alarm setting mode.
  • Page 44 • Displays the city name for which the alarm is set, • The battery mark and Charge are displayed when the set time and the daylight savings time setting the capacity of the secondary battery has when in the alarm 1, 2 or 3 mode. decreased and a charge level 0 has been detected.

  • Page 45: All-Reset

    All-Reset (2) Align each hand at the reference position. Press button (C) for about 2 seconds. The all-reset procedure returns all watch settings, • "00" flashes at "DP-00" on the digital display. including the time and date, to their default settings. •...

  • Page 46: Using El Light

    Using EL light Handling Precautions (for the watch) • The EL light is illuminated for about 2 seconds by pressing button (B). WARNING <The EL light does not light in the following cases.> Water Resistance Performance • When the charge level is low at This watch is water resistant to 200 meters.

  • Page 47: Handling Of Energy Storage Cell

    All parts of this watch, excluding the band, are to be any components that need to be replaced in order to repaired only at a Citizen Service Center. Please have all maintain the water resistant quality of the timepiece are inspections and repairs performed at a Citizen Service at the expense of the consumer.

  • Page 48: Cleaning The Watch

    <Cleaning the Watch> <Static Electricity> • Use a soft cloth to wipe off dirt, perspiration and Since the IC used in quartz watches is susceptible to static moisture from the case and crystal. electricity, the display may become incorrect if the watch •...

  • Page 49: Specifications

    Specifications • Travel Time: Analog: Time in the time/date mode Model: U10 Digital: City name, hours, minutes month, date, Crystal oscillation frequency: 32,768 Hz daylight savings time Watch operating temperature range: 0˚C to +55˚C • Alarm 1: (32˚F to 131˚F) Analog: Alarm time (hours, minutes) Timekeeping accuracy: ±15 seconds per month on...
  • Page 50 Water sensor Pressure sensor Alarm functions Digital display error Water sensor error Pressure sensor error Measurement error (0 m/0 ft detection) Diving log memory error Abnormal depth alarm Depth measurement out of range error Ascent rate alarm Abnormal depth display Dive time alarm Additional Functions •...

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