CASIO OCEANUS OCW-S100-1AJF
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Thread: CASIO OCEANUS OCW-S100-1AJF

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  1. #1
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    CASIO OCEANUS OCW-S100-1AJF

    I bought this watch from Japan about 6 months ago and it has kept "perfect" time for most of those months. But about a month ago, it started losing time, until it was about 2 seconds slow after a couple of weeks.

    I discovered that the auto-reset feature was turned off (I probably did it accidentally), so I turned it back on, and after the first night, the watch indicated that it had adjusted itself -- but it was still a couple of seconds off. That's been a week ago and it's still off and still indicates that it received the WWVB signal the previous night.

    Anyone have any idea how to fix this? Is something not set right, or is something defective?

    This fault sorta negates the reason I really enjoyed the watch. Help!

    Thanx.

  2. #2
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    Re: CASIO OCEANUS OCW-S100-1AJF

    Quote Originally Posted by abstruse1 View Post
    I bought this watch from Japan about 6 months ago and it has kept "perfect" time for most of those months. But about a month ago, it started losing time, until it was about 2 seconds slow after a couple of weeks.

    I discovered that the auto-reset feature was turned off (I probably did it accidentally), so I turned it back on, and after the first night, the watch indicated that it had adjusted itself -- but it was still a couple of seconds off. That's been a week ago and it's still off and still indicates that it received the WWVB signal the previous night.

    Anyone have any idea how to fix this? Is something not set right, or is something defective?

    This fault sorta negates the reason I really enjoyed the watch. Help!

    Thanx.
    Have you tried the "Manual Home Position Adjustment" described in the user manual for the 5235 module?

    If you don't have the manual you can find it here: https://support.casio.com/en/manual/...st.php?cid=009

  3. #3
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    Re: CASIO OCEANUS OCW-S100-1AJF

    I can move this into the G Shock forum.

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  5. #4
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    Re: CASIO OCEANUS OCW-S100-1AJF

    Chris1, the home position must be right, or I'd be off by an hour or more. Right?

  6. #5
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    Re: CASIO OCEANUS OCW-S100-1AJF

    Quote Originally Posted by abstruse1 View Post
    Chris1, the home position must be right, or I'd be off by an hour or more. Right?
    Please just follow the detailed instructions in the manual. Guessing is pointless.

  7. #6
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    Re: CASIO OCEANUS OCW-S100-1AJF

    Quote Originally Posted by abstruse1 View Post
    Chris1, the home position must be right, or I'd be off by an hour or more. Right?
    If I may intercede ...

    I think you are confusing "Home City" and "Home Position." If your Home City is incorrectly set, then you are correct - your time would be off by whole hours. If the Home Position of your hands is incorrectly set, then your time could be off by as little as one second (if the seconds hand is incorrectly set), minutes (if the minute hand is incorrectly set), hours (if the hour hand is incorrectly set), etc.

    The procedure for manually adjusting the Home Positions of the hands can be found on pages E27 - E29 of the manual which can be found here: https://support.casio.com/storage/en...009/qw5235.pdf

    HTH
    "So?"
    -Andrew Breitbart 1969-2012

  8. #7
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    Re: CASIO OCEANUS OCW-S100-1AJF

    Thanx, Gaijin! I'll give this a try.

  9. #8
    Member Hans Moleman's Avatar
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    Re: CASIO OCEANUS OCW-S100-1AJF

    Quote Originally Posted by gaijin View Post

    I think you are confusing "Home City" and "Home Position."
    Wow. Well spotted.
    gaijin likes this.

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