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Adjustments Technical Manual LDK 20(S) - Studio Camera 4-25
Video Miscellaneous Board
Zoom bar
29. Mount lens on camera.
30. Test sawtooth off and set filter to clear.
31. Open iris for nominal video.
32. Set potentiometers ZR90 and ZR283 to their mid-position.
33. Set lens to the wide angle position and adjust the start zoom bar potentiometer ZR90 so that there is just a
small gap in the zoom bar at the left side of the viewfinder display.
Measure at: Adjust with: Required result: Correct:
VF display ZR90
34. Set lens to the tele position and adjust the stop zoom bar potentiometer ZR283 so that there is just a small
gap in the zoom bar at the right side of the viewfinder display.
Measure at: Adjust with: Required result: Correct:
VF display ZR283
35. Repeat steps 35 and 36 to obtain the best result.
Focus bar
36. Set lens focus to the minimum focus distance position and adjust the start focus bar potentiometer so that
there is just a small gap in the focus bar at the left side of the viewfinder display.
Measure at: Adjust with: Required result: Correct:
VF display ZR88