Polaroid 636 Repair Manual page 40

43. The dark slide cycle is the same as in Pronto! type cameras. When a fresh pack is loaded
and the front door closed, S1 and S9 are closed and the solenoid energized. The S5 actuator
drops, closing S5L and S5P, turning on the motor. The dark slide is ejected and the counter
set to 10. The slider is cammed back by the counter, opening S1 and S9. The rotation of
the timing gear lifts the S5 actuator, opening S5L and S5P. The camera is now ready for the
exposure cycle.
44. During an exposure cycle, the camera electronics prevents the flash from being recharged.
Also, once the flash is charged, S10 must be closed along with S1 to fire the flash. You
cannot release S10 and press only S1 to fire the flash.
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