My Casio 4305, about 3 years old, recently started running 5 minutes slow. I had the battery replaced, then re-set the watch manually. I watched the hands twirl round the face and then stop -- at 5 minutes later than the correct time.
Can you help ? We are on London time.
No reason to panic as your watch hands can be advanced to desired time. Her is the link for your watch users manual download:
http://www2.casio.co.jp/manual_pdf/wat/en/pdf_search.php?MODULE=4305&submit.x=52&submit.y=12
Save it on your PC and follow instructions how to set the time.
Don't forget to rate, please.
Adjusting the home positions:
Hold down a+b for about 5 secs. If the seconds hand is not at 12, the home position is "off". If this happens, press a to move the second hand in 1 sec steps until it reached 12 o'clock. Now press b to adjust the hour and minute hands. If not at 12, press a hands will move in 20 second steps until they are at 12. Press b, watch returns to timekeeping mode and should now show the correct time. (:
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Sorry, I ought to have said "5 minutes EARLIER than the correct time."
Thank you for your suggestion. Yes, I do know the manual, and have followed the steps in it. However, when I carry out the formula to set the hands manually, the second-hand jumps, not to midnight, but to 2:10, and I never get the required display. I shall persevere with that, but meanwhile my question is "Why should the watch, when it is re-setting itself, arbitrarily choose a time different different by about 5 minutes from the time transmitted by the wireless signal ?"
I just now carried out 'Manual receive.' The indicator showed signal-strength between A0 and A3. The second hand once again stopped at 2:10 instead of 12, and, after completing the whole process, the watch is still running 5 minutes behind the correct time.
I have now carried out 'Manual set.' To get the right time, I must cheat by telling the watch that (1) it is 3 o'clock, when it is really 4 and (2) it is 52 minutes past, when it is really 47 minutes past. Silly of me not to think of that before.
For me, it was half an hour slow, and it started happening after the automatic change to summer time/daylight saving. I fixed this temporarily by resetting the "home" position of the hands. However it's now lost half an hour again. Does this just mean I need a new battery, or is the watch likely to be broken?
Graham
either 3 minutes slow or 4 minutes too fast
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