Polaroid ProCam Repair Manual page 30

With the Door/Erect Switch in this condition, electrical circuits are completed to
all of the functions noted in Figure 1-23. The ProCam components thus receive
power only when the Door is closed and latched, and the ProCam is erected.
Figure 1-23. Electrical Circuits with Door Closed and Camera Erected
You will recall that Switch S9 is normally closed during the starting condition of
the ProCam. Thus, when the ProCam Door is closed, power is delivered through
S9 to start the Motor. The Motor turns the Timing Gear, which is now
responsible for several actions. As seen in Figure 1-24A, before the Motor turns
the Timing Gear, Switch EOC/S9 is open. (Note that this wireform switch is
different from wireform Switch S9 which is actuated by the Counter Wheel).
EOC/S9 OPEN
Figure 1-24. Timing Gear Closing EOC/S9
ERECT/DOOR
SWITCH
CLOSED BY CLOSING FILM DOOR
AND ERECTING CAMERA
EOC/S9 CLOSED
A
1 - 24
STROBE
SWITCH BLOCK
FEATURES
LIGHT PROCESSOR
POWER IC's
MOTOR
SOLENOID 1
SOLENOID 2
ENCODER LED
CHARGE/READY LED's
USER SWITCHES
B