1 Überschrift 1 - Audio Intervisual Design, Inc.

3.2.4.3 Adjusting the IR Reflex Film Break Sensor
Position the sensor (arrow) in a way
that it "looks" vertical to film surface.
To adjust the sensitivity of the sensor
thread a film and turn the plastic screw
(arrow) with a screw driver until the red
LED (adjusting aid) blinks. Then turn
the screw until the LED surely lights
steadily.
Figure 3-24
IR reflex film break sensor
3.2.4.4 Reverse Running Sprocket Unit
3 sprocket
pressure roller unit
2
distance adjusting screw
1
The reverse running sprocket unit evenly
pulls out the film from the reverse-scan
sound device while the film is running
reverse.
Figure 3-25
Reverse running sprocket
3.2.4.4.1 Adjusting the Distance of the Pressure Roller Unit
• Open the screw and insert two pieces of film between the sprocket and the
pressure roller unit .
• Manually press the pressure roller unit down and tighten the screw in this
position.
3.2.4.4.2 Adjusting the Sprocket
The sprocket position is factory-set. But if the film runs e. g. too loose out of the
reverse-scan sound device you can stress the film to change the sprocket position
for one perforation step.
• Loosen the sprocket flange from the inside of the projector.
• The sprocket position can be changed for one tooth to the left or to the right
side.
- Turning the sprocket to the right side loosens the film which is running in the
reverse-scan sound device (gives film material up to one perforation).
- Turning the sprocket to the left side stresses the film which is running in the
reverse-scan sound device (takes film material up to one perforation).
3-30
Issue: 10/2003