Canon IV-S2 - Manual (Page 34)

NOTE: Each time the Winding Knob is turned the
Rewinding Knob rotates in a reverse direction.
This indicates that the film is properly
passing to the Take-up Spool for the next
exposure, provided you have taken care to
make the film taut by tightening the film
wound in the magazine. Should the Rewind­
ing Knob not turn, obviously the sprockets
are not engaging the film perforations. You
should then rewind the film until it disengages
the Take-up Spool, open the Baseplate and
reload again.
S T O P T H E R E W I N D I N G M O T I O N ( S E E N E X T P A G E ) A S S O O N
A S T H E R E V O L V I N G O F T H E S H U T T E R R E L E A S E B U T T O N
C E A S E S . T H I S W I L L P R E V E N T T H E L E A D E R F R O M D R A W I N G
C O M P L E T E L Y I N T O T H E M A G A Z I N E .
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