c- Switch S3, normally closed at the begining of the exposure cycle is opened by the recock ram located in the gear train assembly. See Figure
d- Switch S4 is tripped by an actuator on the plunger of solenoid #1, the shutter blade actuating solenoid (Figure
NOTE : Whenever the
When the shutter release button is pressed and the exposure cycle is initiated full battery power is delivred to solenoid #1, closing the shutter. Once the solenoid plunger is seated it no longer requires as much power as was originally needed to overcome its static inertia. Switch S4, therefore, closes the S4 CB contacts to the ECM and the electrical power to the solenoid coil is reduced to the «power down» value which is sufficient to continue the exposure cycle yet low enough to conserve battery drain.
WhentheswitchS4(CBcontactsclosed)transfers to the ECM it sends power to the drive motor and operates the gear train. When S4 is actuated, (CB contacts closed) it also disconnects power from the FFA flash circuitry. This action prevents