Mamiya m645 shutter release question

[WolfB]

Hello fellows, I'm new here but have been playing with photography for many years. I just acquired a Mamiya m645 with an 80mm f/2.8 lens and was wondering about the shutter release function. When I have the lever turned to "multi" the winder and shutter fire just fine but when the lever is in the other position, ostensibly the single shot mode, the shutter release won't fire. There is no film in the camera and when opening the film door there doesn't seem to be anything there that would indicate film is required to get the shutter to release in the single frame mode. Am I missing something here or is my shutter not functioning in the single mode. Thanks for any response. Wolf-==-

 

[Soocom1]

here is a link to the mamiya 645 1000s manual.
Its the same camera with only a few minor diff. (including the 1000 speed shutter).
but otherwise the mechanisms are the same.
http://www.mamiyaleaf.com/assets/files/documentation/M645_1000S_v4.pdf

If I remember its a safety function.

 

[Soocom1]

Basically its designed not to fire unless there is film int he camera.
The Multi function is for multiple exp. and releases the lock.

 

[compur]

^ +1