Yashica FX-3 - Camera Operations; Shutter Speed and Drive Cam Operations

Faults that may occur The stop levers do not plunge into the arms.
Setting failure; (Due to short setting, or moving failure of the
stop levers.) In this event, viewing from the
film side, the rear sector returns (ascends) when
the winding lever returns.
Setting of Drive Cam
(1) When the setting lever is set (rotated clock¬
wise), the pin pushes the setting gear; as a
result, tfie latter is turned clockwise.
(2) The setting gear rotates the gear on the lower
side of the drive cam with which the setting
gear engages, and then, the drive cam counter¬
clockwise.
(3) When the gear is full rotated, the release
lever plunges in the drive cam, and then it
stops.
Operation of Shutter
(1) The release lever is pushed down by MCL-7
of the mirror box, and the hook is separated
from the drive cam.
(2) The drive cam rotates clockwise due to the
restoring force of the drive spring, and the
pin is pushed out to the outside.
(3) Rotate clockwise the front curtain stop lever
through 3 parts from the pin to the front
curtain stop lever to release the front sector
drive arm; thus, the front curtain is opened.
(4) When; the drive cam hits against the coupling
plate, the governor works and the coupling
plate is released.
(5) The dri\/e cam is separated from the coupling
plate, the setting lever turns counterclockwise
and swings the rear curtain stop lever clock¬
wise, releasing the rear sector drive arm.
(6) The. rear curtain advances and the shutter
closes. '
Drive cam
4