Mysterious parts for Hasselblad? Need someone to help to identify what are they.

[EgawaShiro]

I recently brought a basket of Hasselblad spare parts for my camera repair. I noticed there are two unknown circuit boards included. Just posting here to see if anyone knows what they are. I will be happy to send them out to anyone who needs them.

 

[Sirius Glass]

Minolta had and XG1 so I would suspect that you no longer look to Hasselblad.

Welcome to APUG Photrio!!​

 

[AgX]

There is no such board at a Minolta XG1.

 

[Mamiya_Repair]

This part is know as IC4 and lives under the bottom cover of the Minolta XG series cameras: XG1, XG7, XG9, etc. Later versions of the XG series changed to a different configuration.

 

[Sirius Glass]

There is no such board at a Minolta XG1.

Then why is it clearly labeled XG1?

 

[AgX]

Because

There is no such board at a Minolta XG1.

I have to correct myself. I looked at several photos of a sole, but assembled XG1 flexboard where this part was not shown.

And would one expect such a simple board at a flexboard with several micro-chips?

But here it is:
https://www.nikon-fotografie.de/community/proxy.php?image=http%3A%2F%2Fwww.nikon-fotografie.de%2Fvbulletin%2Fpicture.php%3Falbumid%3D24952%26pictureid%3D398297&hash=f8e4c186f11e029d64fb6f0c1db488d8

https://preview.redd.it/pjfydcsxn9b81.jpg?width=1540&format=pjpg&auto=webp&s=8e6337daaccf584558bb8a45555f4ed2615dd8d3

 

[AgX]

 

[EgawaShiro]

Much thanks! You guys are amazing! Anyway, doesn't seem to be a very useful part. Just some logic processing unit. But this small circuit is really well made. Ceramic substrate with screen-print thin film resistors.

 

[AgX]

I am still puzzled. So the Minolta XG1 has got two quite similar of these boards. Were the IC's too generic and needed to be added by two model-specific boards, handsolded together with some transistors etc.?

 

[EgawaShiro]

I am still puzzled. So the Minolta XG1 has got two quite similar of these boards. Were the IC's too generic and needed to be added by two model-specific boards, handsolded together with some transistors etc.?

Not an electronic expert. But I guess the specialty of those boards is the screen-printed resistors. My guess is back in those days making surface mount resistors are still an expensive process and requires quite a bit of human effort. But producing screen-printed resistors are much cheaper and can be automated. Also to make large volume production even cheaper, they choose to design a collective small board with all peripheral components installed, which they can first order those small boards from third-party suppliers and then easily assemble to the flex PCB in their own factory.

 

[AgX]

Thank you, interesting thought of yours.

 

[flavio81]

Much thanks! You guys are amazing! Anyway, doesn't seem to be a very useful part. Just some logic processing unit. But this small circuit is really well made. Ceramic substrate with screen-print thin film resistors.

That's indeed a hasselblad part. It's intended for the later focal-plane shutter cameras (i.e. 203FE) and is responsible for interfacing with the photographer's brain to increase snobbishness.

 

[Sirius Glass]

That's indeed a hasselblad part. It's intended for the later focal-plane shutter cameras (i.e. 203FE) and is responsible for interfacing with the photographer's brain to increase snobbishness.

Where is it mounted? In the camera or in the photographer's posterior high up?

 

[AgX]

I found a photo of the flexboard of a Pentax SLR added with a stiffboard in same way.

Much later, after Pentacon succeeded in making a camera with just flexboard electronics, at one later model they added a stiffboard with various compoents again, only to end at the final, most advanced model with a pure flexboard again.


And back to the original question: the Hasselblad Xpan combined a flexboard with stiffboards, thoug dit not mount the stiff ones on top of the flexboard.