Mamiya M645 Super User Manual page 15

Caution:
1. Carefully wipe the contacts of the
battery before inserting it into the
chamber. Failure to do this could result
in poor electrical contact and conse-
quent erratic functioning of the camera.
2. When the camera is not used for a
long period of time, remove the battery
and store it in a cool, dry place.
3. Battery life differs, depending on
battery brand, period after manufac-
ture, storage conditions, temperature
during operation and operating fre-
quency. Prior to use, check the battery
condition, using a battery checker.
It is recommended that you take a
spare battery with you when going out
on a photographic trip, for example.
4. This camera is designed for use
with either a silver-oxide or alkaline-
manganes battery. However. the life of
a silver-oxide battery will be much
longer. The silver-oxide battery is pre-
fered when the AE Prism Finder is
attached.
At times it may be necessary to rotate
the film advance crank two full turns to
cock the shutter when an empty take-up
Operation Test
Pull out the Dark slide and place it
into the Dark Slide Storage Slot.
Advance the Wind-up Crank one
complete revolution.
Set the Multiple Exposure Lever to
the "MULTI 0" mark position.
Release the Shutter
Set the Shutter Release Selector
to the "m mark, and press the
button.