Citizen Campanola battery replacement question. - Seiko & Citizen Watch Forum – Japanese Watch Reviews, Discussion & Trading
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Old 11-21-2019, 07:38 PM   #1 (permalink)
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Default Citizen Campanola battery replacement question.

I have a Campanola perpetual calendar AG 6200-07P, caliber: 670. I've looked on line but could not find anything about a battery change. I know not to try to change a battery in a Seiko perpetual calendar watch because the resetting of the watch entails quite a process internally. I've replaced batteries in other watches with no problems. I am concerned with this Campanola due to its many complications. The manual states you have to reset the buttons on the outside of the case which seems far simpler than what Seiko puts you through. So in short my question is if a person with a modicum of mechanical ability should attempt to do a battery change on the Campanola?
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Old 11-21-2019, 09:09 PM   #2 (permalink)
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Hi Carl,
The 6702 caliber inside your watch does appear to have a shield and screw for the battery that must be removed in order to access the battery. There are several coils in this movement (4?), that if even grazed by a screw-driver (or tweezers, or the edge of the shield) will kill functionality of that coil's wheel train.
The set up of the hand positions and perpetual calendar after that also is a little more involved than your usual watch. The case itself is also very nicely made, but not with a simple caseback that lifts off.
I wouldn't recommend watch owners change the battery on this type of watch themselves, I've seen what happens when they do!
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Old 11-21-2019, 09:18 PM   #3 (permalink)
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The trick to doing the seiko perpetual (8F series) easily is to do it fast. IIrC you have 4 minutes, from the time you remove the battery to replacing it. If you go past that, then you have to reprogram.

Also, citizen perpetuals with a pusher at 2 o clock are fairly easy to set. You use the second hand as the pointer for what year (year 1, 2 , 3 or leap), then to set the month (i believe by matching the hour indice) and then the day (matching the minute track). It’s been a while since i did it so my recollection is vague. And it wasn’t on a campanola. But a friend of mine who is an expert on these said all citizen perpetuals with a 2 o clock pusher are set the same way.


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Old 11-22-2019, 08:11 AM   #4 (permalink)
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Thank you gentlemen for your advice and information. Although my Campanola does not need a battery yet, I know who it will meet when it does.
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