FujiFilm GW690 2 Factory Service Manual And Parts List page 54

DESCRIPTION FOR FILM ADVANCING/SHUTTER CHARGING AND RELEASING MECHANISM
FUJI PROFESSIONAL GW69011, GSW69011
1. When the camera is loaded with a film and camera back is closed, the return lever
( 4 - 39) is pushed by the back cover, causing the rotary plate assembly ( 4 - 77) to
turn. Then, the gear ( 4 - 79) engages with the gear assembly ( 4 - 78).
At this time, the head A of the lever assembly ( 4 - 88) is slightly separated from
the disc (4 - 99). Therefore, the pawl (4 - 36) disengages with the pawl wheel (4 - 20)
allowing the film advance lever to be wound up.
At the same time, the lock lever assembly ( 4 - 51) and lock lever assembly ( 2 - 37)
tum, causing the lock pin (2 - 39) to enter the space under the release lever (7 - 99),
prohibiting the shutter releasing.
NOTE: When these two lock levers ( 4 - 51 and 2 - 37) do not operate correctly
(due to unhooked spring, existence of dust, etc.), the shutter is not locked,
allowing the shutter to be released before the film is taken up one frame
completely.
2. When the film advance lever is wound up, the gear ( 4 - 9) which turns simultaneously
with the sleeve assembly ( 4 - 6) causes the disc assembly ( 4 - 12) to turn through
the pawl (4 - 18), and the energy is transfered to the gear (4 - 22) and gear assembly
( 4 - 32) causing the film to be advanced.
At the same time, as the gear (4 - 42) turns, the rack assembly (4 - 47) is pulled up
by the shaft (4-71) of the ratchet wheel assembly
(4-67)
at the first wind up,
the gear (7 - 119) is turned by the teeth of the rack, and with the gear of set plate
(7 -42), the shutter is charged through the gear (7 - 54). [Arrow A in Fig. 22]
Then, the hook B of the rack assembly (4 - 47) hooks on the hook (4 - 72), and
its head enters the space beneath the release lever.
At the same time, the lever assembly ( 4 - 114) which has been hooked on the ratchet
is kicked by the last projection of the ratchet, the lever assembly ( 4 - 55) enters the
hook, the pawl disengages with the ratchet, the interlock pin ( 4 - 57) moves away
from the lever assembly ( 4 - 88), the head A of the lever assembly ( 4 - 88) rides on
the disc ( 4 - 99), the head A of the lever assembly ( 4 - 88) further drops into the
recess, and thus, the shutter is allowed to be released.
-52-