Mamiya RZ67 shutter issue

So the other day I received an as-is mamiya rz67 kit with the claim that all they did to test it was put a battery in it and try to fire the shutter. Shutter didn’t fire and that’s all the tried to do (no troubleshooting). So when I still don’t have a battery yet, but I first started testing by putting it in emergency mode and seeing if the body and mirror would work without any other components on it. Works like a charm every time... up until I get to adding the lens and then it will only fire after I manually trip the lens shutter before attaching it to the body to be cocked. Both the mirror and shutter fire only once and then after cocking the lens on the body again after the first shutter release, it cocks the lens but when I put the button, the mirror and lens don’t budge/nothing happens. The lens is not in T mode and the shutter release screw is all the way in so that’s ruled out. Does this sound like a lens issue or a body issue?

The shutter time in regular mode is electronically governed. It cannot be used (won't release) without a battery present, in good condition, and properly oriented. The RZ67 has a number of exposure-prevention interlocks so that you don’t waste film when something is not in correct shooting mode. It’s most likely that one of the “DON’T FIRE” conditions is correctly preventing you from shooting. See the “MONITOR LAMPS” warnings on page 16 of the manual.

For example, the dark slide must not be in the slot at the front of the film holder. Otherwise, you’d waste a frame of film (unexposed). The battery must be fresh and installed in the correct orientation.

Here’s the manual, enlarge the view as necessary:

http://www.mamiyaleaf.com/assets/files/documentation/RZ67_Pro_v4.pdf

The cardinal rule for the RZ67 or any other sophisticated equipment: “When in doubt—READ THE MANUAL.”

Whenever you don’t plan on using it for 2 weeks or longer, it’s prudent to remove the battery so that the contacts won’t get ruined by corrosion due to a leaking battery.

Try moving the button (right side of the body) to the multiple shots position. You still need to remove the dark slide for dry firing. The shutter speed is automatically set to 400 when the camera is used in the emergency - no battery setting. I hope I understood your question correctly. Let me know if you have any other questions. It's an awesome camera.