FP 25/30/50 D
Film Gate Components
Issue: 04/2011
27
3 .2 .8 Rotating Shutter
The rotating shutter interrupts the projection light once during the film transport and
once during the picture standstill. (48 interruptions a second at 24 pictures a second).
The shutter is mounted on a shaft which is driven from the intermittent movement via
a fibre gear.
1
3
4
5
2
Shutter (1-blade)
Shutter shaft
Fibre gear and drive unit
Intermittent sprocket drive
Main drive motor
DANGER
Only remove or replace the shutter housing when the projector is off.
If you have to work on the projector while it is running be very careful not to touch the
rotating shutter. Serious cuts can result.
X
NOTE
The shutter is factory-set. Nevertheless, if necessary only trained service personnel is
allowed to adjust the shutter timing.
