Pentax SF10 Manual page 14

• If the film is slack, push some of the film back into
the cartridge to make it flat. If the film is sharply bent,
straighten it out or cut off the bent portion.
6. Close the back cover, and the camera automatically
advances the film to the first frame, indicating the
exposure counter in the LCD panel.
* Make sure the film-loaded mark f Q_OJ is
displayed in the LCD panel.
* If the film-advance mark (Q_] and the error mark
are flickering as shown, the film is not properly
loaded. It must be reloaded.