Specifications

7-5
5. To re-align the CCD board, first loosen the two lateral adjustment screws
shown in the diagram of the circuit board. Move the board laterally while
observing the image on the scope. When the video trace appears as shown in
Figure 7-5, with respect to the clamp trace, tighten the screws.
x - 0.2
division
x + 0.2
division
Figure 7- 5.
Video trace in relation to clamp trace.
Azimuth
The azimuth adjustment controls the angular position of the CCD board with
respect to the film. To adjust the azimuth of the CCD:
1. Loosen the two azimuth adjustment screws shown in the diagram. The focus
adjustment screw will also need loosening slightly
2. Rotate the CCD circuit board assembly clockwise and counterclockwise and
observe the LEDs on the Cat. No. 671 boards in the CP500.
3. Center the rotation of the CCD circuit board assembly between the angles at
which synchronization pattern finding begins to fail. See discussion below.
4. Tighten azimuth adjustment screws and then refocus the soundhead.
Verification of synchronization pattern finding
The Cat. No. 671 cards in the CP500 are responsible processing the digital data.
These cards display sync found on their LEDs. The 8 LEDs from top to bottom
display sync found as follows:
• Upper Left found first pass
• Upper Right found first pass
• Lower Left found first pass
• Lower Right found first pass
• Upper Left found at all
• Upper Right found at all
• Lower Left found at all
• Lower Right found at all
If any of these LEDs are constantly off, this may indicate improper positioning of
the film or CCD circuit board.