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Citizen JY8078-52L - User Manual

Citizen JY8078-52L
60 pages
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1
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.................................................................................... 34
10. Charge Level Display............................................................................... 40
English

Questions and Answers

  • J
    Jeffrey KleinAug 8, 2025
    Why has my Citizen JY8078-52L Watch stopped working?
    • J
      Jake BowmanAug 8, 2025
      If your Citizen watch has stopped, the charge level indicator might be at level 0. To resolve this, charge the watch sufficiently until the charge level indicator reaches level 3, as indicated in 'Guide to Charging Time'.
  • S
    santostimothyAug 23, 2025
    What to do if the hands or digital displays on my Citizen JY8078-52L Watch are abnormal?
    • S
      Stephanie RamirezAug 23, 2025
      If your Citizen watch hands or digital displays are acting abnormally, try resetting the watch.
  • N
    Nancy WangAug 30, 2025
    Why is the second hand on my Citizen Watch moving in 2-second intervals?
    • C
      combsbarbaraAug 30, 2025
      If the second hand on your Citizen watch is moving in 2-second intervals, it could indicate a low charge. Charge the watch sufficiently until the charge level indicator reaches the fully charged level. Alternatively, 'ERR' might be displayed in digital display 1, in this case you should reset the watch and then correct the reference position.
  • T
    tmullinsNov 14, 2025
    Why is my Citizen Watch not receiving radio signals?
    • R
      Ryan WhiteNov 14, 2025
      If your Citizen Watch isn't receiving radio signals, several factors could be at play. First, ensure that the home city setting (digital display 2) corresponds to your current reception area by checking the map and adjusting the setting accordingly. Additionally, obstructions or electronic noise could interfere with signal reception; try moving away from potential sources of interference and orient the watch with the 9:00 position facing the radio signal transmitter. Avoid moving the watch while it is receiving a signal. If the second hand is moving at 2-second intervals, charge the watch sufficiently by placing it in direct sunlight. Make sure that the mode is set to TME, CAL, or RX-S by pulling the crown out to position 1 and setting the mode accordingly. If the reception status is NO, c...
  • M
    MихалOct 29, 2025
    Как включить сигнал каждого часа на CITIZEN PROMASTER JY8078-52L
    • М
      МихаилSep 14, 2025
      Как отключить сигнал каждого часа
      • M
        MIHAILJul 31, 2025
        Как включить сигнал каждого часа.
        • М
          МихаилJul 27, 2025
          Как включить сигнал каждого часа

          Summary

          10. Charge Level Display

          Checking the Charge Level Display

          Details how to check the charge level display for the watch.

          13. Using Daylight Saving Time

          What is Daylight Saving Time?

          Explains the concept and purpose of daylight saving time.

          Setting the Daylight Saving Time

          Details methods for setting daylight saving time automatically or manually.

          20. Using the Receive Setting (RX-S)

          Daylight Saving Time Reception Setting

          Configure automatic updates for daylight saving time based on radio wave reception.

          Automatic Reception Setting

          Set the operating conditions for the watch's automatic radio signal reception.

          A. Power Saving Function

          Canceling the Power Saving Function

          Details how the power saving function is automatically canceled when exposed to light.

          B. Insufficient Charge Warning Function

          Operations During 2-Second Interval Movement

          Describes changes in digital displays and operations during 2-second interval movement.

          C. Overcharging Prevention Function

          D. Guide to Charging Time

          Charging Time Guidelines and Cautions

          Provides charging time estimates based on light exposure and includes cautions.

          E. Handling Your Solar Powered Watch

          Handling the Secondary Battery

          Instructions and warnings regarding the removal and disposal of the secondary battery.

          Battery Usage Warnings

          Warnings about using only the specified battery type to prevent damage or injury.

          Charging Precautions

          Cautions for safe charging, especially regarding temperature and light sources.

          Troubleshooting

          Radio Signals Cannot Be Received

          Addresses issues with the watch failing to receive radio signals due to location or settings.

          Troubleshooting: Time Accuracy

          Time Not Correct

          Diagnosing why the watch time is inaccurate and how to correct it.

          Slight Time Deviation After Reception

          Explains minor time deviations after successful radio wave reception.

          Second Hand Moves to RX Position

          Addresses the second hand moving to RX standby unexpectedly.

          Troubleshooting: Watch Operation and Charging

          Watch Has Stopped

          Troubleshooting steps when the watch stops running, often due to low charge.

          Second Hand in 2-Second Intervals

          Explains the 2-second interval movement indicating low charge or insufficient power.

          Hands Moved Quickly After Removal

          Explains rapid hand movement after removing the watch from a static environment.

          Watch Not Working After Charging

          Steps to take if the watch remains non-functional even after attempting to charge it.

          Abnormal Hands or Displays

          Addresses issues where watch hands or digital displays show abnormalities.

          WARNING: Water-resistance performance

          Water Resistance Levels and Use

          Explains water resistance ratings (WR) and their corresponding safe usage scenarios.

          Precautions: Water Resistance and Care

          Water Resistance Usage

          Guidance on using the watch based on its water resistance rating and cautions for wet conditions.

          Watch Cleaning and Maintenance

          Instructions for cleaning the watch case, band, and maintaining water resistance.

          CAUTION: Operating Environment

          Temperature and Magnetic Field Precautions

          Warnings about using the watch in extreme temperatures or near magnets.

          Static Electricity and Shock Precautions

          Advice on avoiding static electricity and strong physical shocks to the watch.

          Chemical and Corrosive Gas Exposure

          Warnings about exposing the watch to chemicals, corrosive gases, or mercury.

          Periodical Inspections

          Recommendation for regular inspections to maintain watch safety and performance.

          26. Specifications

          Watch Specifications Overview

          Details core specifications like model number, type, time accuracy, and temperature range.

          Analog Display Functions

          Lists the functions and information displayed in the analog part of the watch face.

          Digital Display Functions

          Lists the functions and information displayed in the digital segments of the watch.

          Additional Watch Functions

          Details advanced functions like radio reception, alarms, chronograph, and world time.

          Specifications: Operation and Battery

          Watch Operation Time

          Information on how long the watch operates on a full charge and under power saving.

          Battery Information

          Specifies the type of battery used in the watch.

          Citizen JY8078-52L Specifications

          General IconGeneral
          BrandCitizen
          ModelJY8078-52L
          CategoryWatch
          MovementEco-Drive
          Case MaterialStainless Steel
          Band MaterialStainless Steel
          Case Diameter45 mm
          Dial ColorBlue
          CrystalSapphire
          Water Resistance200 meters
          FunctionsChronograph

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