Technicolor - Thomson LDK 20(S) technical manual Zoom bar, Focus bar

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:

VF display

Adjust with:

ZR90

Required result:

Correct:

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:

VF display

Adjust with:

ZR283

Required result:

Correct:

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:

VF display

Adjust with:

ZR88

Required result:

Correct:

Adjustments Technical Manual LDK 20(S) - Studio Camera 4-25