Yashica Lynx 5000 shutter repair

Hello! I have acquired a the camera mentioned in the title for a very very cheap price. Unfortunately the shutter speeds don't seem to change. It's always very fast.

I'm looking for some repair guidance or a manual for Copal Shutters.

I have found disassembly guides but I don't really know what causes the shutter speed to be too fast. Usually the shutter speed is slow which makes more sense to me since the mechanism can get stuck.

Anyway, any help is appreciated

For Copal service manuals and technical information see

I have a Lynx-14 which has a similar problem - the shutter speeds fire very fast.

- In my case, I am pretty sure that the linkage connecting the shutter speed setting ring to the actual shutter mechanism is detached. IIRC, I decided this based on a lack of resistance when turning the speed setting ring, and that you can't hear the mechanism making noise when you adjust the speed with the shutter cocked. (On many mechanical leaf shutters, if you do that, on the slow speeds you'll hear a buzz as the slow speed mech moves.) I haven't tried to fix it yet because the filter ring has a dent that blocks unscrewing the front trim ring.

- On other leaf shutters I've encounted, all speeds firing fast sometimes means that the delay mechanisms are not engaging (stuck-disengaged). So the shutter fires, but neither the fast or slow mechanisms delay it. This may be solvable by cleaning the shutter, if nothing is broken.

I have not worked on that particular camera, but I wonder if it's shutter is similar in operation to the electronic Seiko units used in the Bronica ETR-series cameras. Those shutters actually have just a single 1/500 sec mechanical speed, with all slower shutter speeds being electronically controlled. I wonder if there's a similar arrangement here, but with a mechanical escapement providing the necessary timing for slower shutter speeds. If so, a CLA may be needed.

If all speeds are fast then there is most likely a problem with the speed escapement, particularly with the retard mechanism (reddesert describes this above).
The Nat Cam course on the LCR website will teach you all you need to know about how these shutters operate and how to service them.