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Re: [OM] [Resolved] Zuiko 90/2.0 Macro diaphragm spring died??

Subject: Re: [OM] [Resolved] Zuiko 90/2.0 Macro diaphragm spring died??
From: John Hermanson <omtech1@xxxxxxxxxxx>
Date: Mon, 29 Jun 2009 08:21:16 -0400
If this is he case you may hear a faint click as you focus all the way 
out to 1:2.
___________________________________
John Hermanson  |   CPS, Inc.
21 South Ln., Huntington NY 11743
631-424-2121  |  www.zuiko.com
Olympus OM Service since 1977
Gallery: www.zuiko.com/album/index.html


C.H.Ling wrote:
> Thanks for the hint, John. Next time when I disassembly the 90/2 I will 
> check this point.
> 
> C.H.Ling
> 
> ----- Original Message ----- 
> From: "John Hermanson"
> 
>> It's also possible long tab on coupling ring is slightly bent, so when
>> lens is at 1:2, error is the greatest and tab slips off the other lever.
>> ___________________________________
>> John Hermanson  |   CPS, Inc.
>> 21 South Ln., Huntington NY 11743
>> 631-424-2121  |  www.zuiko.com
>> Olympus OM Service since 1977
>> Gallery: www.zuiko.com/album/index.html
>>
>>
>> C.H.Ling wrote:
>>> Talking about the aperture mechanism, my 90/2 just have aperture coupling
>>> lever disengaged after some 1:2 shots, it was the second time, it seems 
>>> that
>>> the aperture coupling lever is a bit too short when the lens extended to
>>> maximum. Together with the space require for coupling ring/stop down ring
>>> movement, the aperture lever sometimes went out of position.
>>>
>>> C.H.Ling
>>>
> 
-- 
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