1 Ãberschrift 1 - Audio Intervisual Design, Inc.
1 Ãberschrift 1 - Audio Intervisual Design, Inc.
1 Ãberschrift 1 - Audio Intervisual Design, Inc.
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3.3.1.4 Sound Shaft Drive<br />
The sound flywheel (for alignment<br />
running of sound) is driven via a<br />
friction wheel from a stepping motor.<br />
In shuttle operation the flywheel will be<br />
uncoupled from sound shaft – but the<br />
flywheel runs forward driven by the<br />
stepping motor.<br />
Figure 3-45<br />
Sound shaft drive<br />
When the projectors runs in projection operation again and the sound shaft runs<br />
synchronously with the stepping motor, the flywheel will be coupled again and the<br />
stepping motor will be lifted up.<br />
Because of this operation the sound alignment running will be reached in less than 2<br />
seconds.<br />
When projector is still, the stepping motor switches off itself (switching off time is<br />
adjustable, factory-set: 3 minutes).<br />
When re-starting the stepping motor accelerates the flywheel again.<br />
NOTE<br />
Mounting and adjusting the sound shaft drive, see EC service manual.<br />
3-40<br />
Issue: 10/2003
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