Dismount back/PM-90 Prism on Hassy

[pbryld]

Just got a 203FE with this prism.

There are these to button-like things, one on each side of the prism.
I assume these are to be used when you want to dismount the back, however, only the one on the right side will let itself press down. The other one won't move anywhere at all.
I'm just about clueless dismounting-wise right now. It's probably incredibly simple, but I can't figure it out...

So my question is: How do I dismount the back when using the PM-90 prism?


Thanks!

 

[John Austin]

Remove the back, with the little button at the top front centre of the back, and the viewfinder should slide out toward the rear

 

[Leigh B]

As I understand it, one of the buttons on the finder activates the release button for the back, since you can't reach that with the finder mounted.

I won't bet the ranch on it, since I've never owned a PM-90, but this is what I've heard in conversation.

Note that the darkslide must be fully inserted in order to release the back.

- Leigh

 

[pbryld]

As I understand it, one of the buttons on the finder activates the release button for the back, since you can't reach that with the finder mounted.

- Leigh

Yes, there are two of these buttons. Only one of the will move, but that doesn't seem to be enough. I can't move the other one.

I wonder if it is broken?

 

[pbryld]

I succeeded. The other button was just stuck somehow..