PhaseOne P 20, Reference Manual

Page: 54 / 108

P - Series Reference Manual
54
Mounting the P back on the Mamiya 645AFD
The P back is fully integrated with the camera house
and acts as a true part of the whole camera system.
When no cassette is attached to the Mamiya 645 AFD
camera house the mirror is up and the shutter is open.
This is the correct position when no film cassette is
attached. When attaching the P back to the camera
house the shutter will close and the mirror comes
down. It is important to ensure that the bottom part of
the P back camera back is pressed well into the lock-
ing mechanism before the upper locking mechanism
is pressed together. Failure to do this can in some
circumstances bring the Mamiya camera house in an
error state of continuously opening and closing the
shutter. In case this error occurs, then simply remove
the P back. Please be aware that the shutter should
be in the correct starting position (shutter open), if not
attach and remove the P back again to make sure that
the camera house gets in the correct starting position.
(The same procedure is recommended by Mamiya for
all film cassettes)
Press and hold down the "Detach" button
while connecting the upper part
Place the P back firmly in the bottom
locking mechanism