Dolby Laboratories CP650, Руководство по установке

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Dolby
®
Model CP650 Installation Manual
6-1
Chapter 6
Digital Soundheads
6.1 Mechanical Alignment
Mechanical alignment of the Cat. No. 701 (or 700) Digital Soundhead consists of
confirming that the film path through the digital soundhead is aligned with the path
through the projector. For built-in reverse-scan (basement) digital soundheads, see the
manufacturer's instructions.
1. Thread a length of film from a supply reel through the digital soundhead (refer to
the threading diagram located on the soundhead), and continue through the
projector as you would any film.
2. Apply tension to the film and inspect for equal tension on both edges of the film.
3. Check for uneven forces on the rollers, or twisting of the film.
4. When the path is aligned, tighten the soundhead mounting bolts and reel arm.
A
C
B
A
C
C
B
B
A
Set film path so that top and bottom tension
arm rollers are approximately 5 mm (1/4 inch) apart.
Use the white painted semi-circles for angular alignment
of tension arms . Make sure that the rollers do not touch.
Dolby Digital Print Threading Path
Bypass Threading Path
Figure 6–1 Digital Soundhead Adjustments