User Guide

t-
] FAA23051-R.3248.A
(3)
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Q
Film loading and blank exposures
Normal advance film loading. (Spool drive system)
(Sprocket drive system when the FM-24 camera back
mounted.)
is
Blank film advance
Fully depress the shutter release button while opening
the camera back to rotate the film take-up spool for a
certain period of time.
If film is loaded, approximately
0.5 frames are advanced on the spool.
c Spool motor advances film by duty (pulse) -driving in
order not to damage film perforations.
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Film advance and shutter charging” motors work
simultaneously.
The shutter charging motor rotates to
release film sprocke’t stopper.
Auto film loading (Film is loaded, camera back is
closed.)
Film automatically advances 2.5 to 3.5 frames at auto
film loading.
Film advance:
Spool motor advances film by duty (pulse)
driving in order not to damage film perforations.
Film advance and shutter charging motors work
simultaneously.
The shutter charging motor rotates to
release film sprocket stopper.
Blank exposures stop when the frame counter switch is
turned OFF.
(Film advances to frame 1.)
Duty ratio of the duty (pulse) driving changes as
temperature and voltage vary.
Auto film loading
If blank exposures are not taken
error
while the film detection switch
is OFF, the film take-up spool
rotates for one second and
mechanical charging takes place
three times (shutter charging
motor rotates), the LED indicator
lights up (alert LED), and the
shutter release is locked.
— M13
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