Minolta XD - Page 14

6. Mirror Box Mechanism
6-1. Mirror operating mechanism
Second curtain
signal lever
(Ss OFF) \
Mirror stop lever
Damper set lever.
Air damper
Damper lever
Operation lever
Release lever p
Return signal lever
pes Mirror drive lever
Preset operation lever
MP return lever
Return lock lever
(Mirror raising)
1)
2)
3)
4)
When shutter button is depressed, release lever part (@ in case of magnetic release or
part (b in case of mechanical release is pushed to release damper set lever.
When damper set lever is released, preset operation lever, stopped by damper lever pin,
starts operating and at the same time air damper piston is pushed down by damper spring
to rotate damper lever.
When damper lever is rotated, part @ of the lever pushes mirror stop lever to release
mirror drive lever. At that time, memory switch (S.) is turned OFF.
When mirror drive lever is released, it is operated by mirror operation spring to push
mirror operation lever thus raising the mirror.
(Mirror lowering)
1)
2)
3)
4)
Just before completion of shutter second curtain operation, closing lever pushes down
return signal lever part ©, and second curtain signal lever pushes return lock lever
part (f) to release it from MP return lever.
MP return starts returning due to MP return spring and return lever support spring
strength.
Then damper set lever is pushed back by bend part ©) of the lever to push back mirror
drive lever.
@ At that time, returning shock is reduced by air damper spring and the viscous resist-
ance of air flowing between cylinder and piston.
Mirror operation lever follows up mirror drive lever with the aid of mirror down spring
strength to lower the mirror.
After preset operation lever is returned, damper set lever is stopped by release lever.