Olympus 170 - Manual (Page 17)

A. Correct
Make sure the film is lying flat
before closing the back cover.
B. Incorrect
Push the film cartridge gently to
position the film correctly. Then
press the left side of the back
cover and close it securely. If the
film is not lying flat, the film may
not advance to the first frame.
Do not touch the film-type
material at the rewinding shaft.
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