20 Most Recent Mamiya 645 Medium Format Camera Questions & Answers

It's not on the body but on the finder. Assuming the finder has one, it'll be on the right side (as viewed from the back). See pages 13-15 of the manual available from http://butkus.org/chinon/mamiya/mamiya_m645/mamiya_m645.htm

Hi karlsenpaata,

I would suggest you to shoot some photos reset the settings and then remove the battery of the camera for at least half an hour , then put the battery back again and then the problem would be resolved.
Hope this helps ..:)

The preload spring has pulled away or came detached
A service manual with photos are needed to repair this problem
You can find infon getting such a manual at a low cost
I can not find a free pistorial manualn for you
Here is the link below for your model

http://www.photobooksonline.com/books/manual06.html

Look at the * from the red the wheel, then after that you can press the whte point then it is good.

Get any crud from the battery out of the works with pH-neutral stuff and q-tips or lint-free towels, and see if it works (without film; might as well check current drain with a bench supply instead of a battery, too) once you've done a satisfactory job of that.  Then visit a shop so they can see if the shutter timing is tolerable...and perhaps sometime you can load film in again.

It's a common problem in the 645 - if you want to do it yourself, without a permanent fix, put a DROP ( not a lot ) of lighter fluid, or rubbing alcohol on the tip of a fine screwdriver and apply it to the gear you use to rewind the camera, and turn back and forth a few times. If that doesn't loosen it, it'll have to be disassembled.

for complete details the link to the manual is given below for ur device:

www.mamiya.com/assets/pdfs/645/M645_1000S_v4.pdf

First check id the sync card is good .... that can be checked by shorting the outer rim and inner pin ... if the flash fires than the cord is fine .... there would be a problem with the jack in the camera.... try cleaning the jack a bit ...sumtimes carbon deposits give problems

http://butkus.org/chinon/mamiya.htm

You probably nees the "P" adapter made to attach the back to the camera. If your item did nopt come with one, you will have to buy it seperately. Go to Mamiya.com and download the owners manual pdf.

You might want to check and make sure the battery is still good. If you purchased the camera used and didn't change the battery then this might be the case.

But in the mean time this is what you need to do:
1st-make sure that the shutter speed dial is set to any shutter speed other than the red circle w/red ring. If your camera is set to that it will drain your battery when not in use since it is designed to be an automatic setting. I set mine to 1/125th to do this push in the circular dial on the side and at the same time turn the knob.

2nd- locate the 2 levers on the opposite side of the shutter speed dial. Once you found them then position the back lever all the way forward towards the setting for "MULTI" and position the lever towards the front straight up.

3rd- then wind the film crank till it won't wind anymore and depress the shutter, if it is wound and the shutter release is still stuck then skip to the fourth step, if something happened and you heard a click then still proceed to the next step because no the shutter release will be temporarily stuck.

4th-Once both of these levers are in this position there should be a red button just behind the shutter release button on the top right side of the camera.... drum roll please...."Push the red button" what you should hear is a rather loud click, this click is the mirror releasing allowing you to: 1 wind the film crank and take another picture and 2 this also now allows you to see through the lens again (assuming that you have a lens on the camera).

In Conclusion: without a battery that is fully functional in the camera this is how the camera will operate once you get a battery for your camera then reposition the levers on the side of the camera opposite of what I suggested (this will be the normal operating mode for the camera with a battery) then when you wind the film crank and depress the shutter everything will function normally.

I've got the same problem :-( Help would be appreciated.