Disassembling a OS 10 Miyota

[zia]

Hi.

Who know how to disassemble a Miyota OS10 movment (and could explain me)?

Thank you.

[offshore]

This may help.

http://www.citizen.co.jp/miyota_mvt/downlo...s_0S_SERIES.pdf

However you need to circuit test it, to find out the problem.

Normally it is easier just to throw in a new one.

Offshore

[offshore]

@zia,

Before you go pulling it apart, spend the time, to read thru these guides.

http://www.citizen.co.jp/miyota_mvt/downlo..._0S10_30_60.pdf

http://www.citizen.co.jp/miyota_mvt/downlo...f/draw_0S10.pdf

http://www.citizen.co.jp/miyota_mvt/downlo...-0S1A_multi.pdf

In the post above, I gave you the parts list.

These are the specs, drawings, and ops manuals.

I have done a bit of work on these, and often find it is simply a reset required, or a (major) faulty component.

To diagnose the faulty item, you will need a reasonable circuit tester, and some electronics knowledge.

And you probably will find that if it is not a major (quartz/coil) failure, that the easy fix, is probably a movement replacement.

But don't give up, until you check and recheck, that you have run the reset correctly.

And of course checked the basics... battery condition....contacts..... complete circuit.

If you come up with an operational circuit, and still no analogue operation, it may be that you have a 'seized' gear train.

More often than not, a quick "zap" with a demag, will free up this gear train.

But certainly don't just jump straight in to a tear down... this is really a last gasp option.( and will probably be followed by movement replacement anyway)

If you finally find you can repair, but need some of the minor parts, let me know, as I have a couple of dead OS series movements laying in my DOA box!

Offshore

[zia]

Thank you guys for your completes explaainations : now i've fixed my issue.