FujiFilm GW690 2 Factory Service Manual And Parts List page 56

DESCRIPTION FOR FILM ADVANCING/SHUTTER CHARGING AND RELEASING MECHANISM
FUJI PROFESSIONAL GW69011, GSW69011
3. When the film is continued to be wound up, the exposure counter drum assembly
(2 - 11) which is turned by friction of the film and take - up gear (2 - 31) turn,
causing the gear assembly ( 4 - 60), gear ( 4 - 76) and gear ( 4 - 80) to turn.
Thus, the exposure counter advances from "S" to "l ", the head A of the lever
assembly (4 - 88) drops into the recess on the disc (4 - 99), the pawl (4 - 36) which
is interlocked with the lever assembly engages with the pawl wheel ( 4 - 20), and
thus, the winding up stops.
At the same time, the lock lever assembly ( 4 - 51) pushed by the head A of the
lever assembly ( 4 - 88) causes the lock lever assembly . (2 - 37) to turn.
Then, the lock pin (2 - 39) moves away from the release lever, allowing the shutter
to be released.
4. When the shutter release is depressed with the front shutter release ring (7 - 86) so
set that the red mark can be seen (unlocked), the release lever assembly (7 - 98) is
pushed by the shutter release shaft (1 - 20), it further pushes the head of the rack
( 4 - 49) down, and thus, it is unhooked with the hook ( 4 - 72).
The rack ( 4 - 49) pulled by the spring (1 - 22) moves rapidly, and causing the gear
(7 - 119) to turn, the rack kicks the lever assembly (4 - 55), unhooking the lever
assembly ( 4 - 114). The rack further moves rapidly, turns the gear (7 - 54) causing
the set plate (7 - 42) to turn, and thus, the shutter is released.
[Arrow B in Fig. 22]
5. As soon as the shutter is released, the lever (7 - 102) pushes the pawl (4 - 36), the
pawl ( 4 - 36) moves away from the ratchet, and the head A of the lever assembly
(4 - 88) is pulled out from the recess on the disc (4 - 99).
At the same time, the pin (4 - 57) on the lever assembly (4 - 55) kicked by the rack
supports the lever assembly ( 4 - 88 ).
Further, the lock levers ( 4 - 51 and 2 - 37) turn toward the locking direction, and
when the shutter release shaft returns as the shutter release is freed from the
depression, the lock pin (2 - 39) enters the space beneath the release lever, and
thus, the shutter release is locked.
The lever assembly (4 - 114) is released, hooked on the ratchet wheel (4 - 69), and
thus, the lever assembly ( 4 - 114,) functions to prevent reverse turn.
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