Christie D Series Service Manual page 11

Adjustment procedure 1
(When a color differential meter is used)
1. First adjust the -MID-1- tone, from G color.
2. Select G of point No.2 and change the
3. Measure the illumination at points No. 2, 3, 10
and 11.
The values should be:
No.2 = Y2 [lx], No.10 = Y10 [lx]
No.3 = Y3 [lx], No.11 = Y11 [lx]
4. Points No.2 and No.3 have the average of Y2
and Y3.
Y2 = ( Y2 + Y3 ) / 2 ± 3 [%]
Y3 = ( Y2 + Y3 ) / 2 ± 3 [%]
5. Points No.10 and No.11 have the average of Y10
and Y11.
Y10 = ( Y10 + Y11 ) / 2 ± 3 [%]
Y11 = ( Y10 + Y11 ) / 2 ± 3 [%]
6. Then adjust R and B color of the -MID-1- tone.
7. Measure the color coordinates of point No.1 and
Assume that they are x = x1, y = y1.
NOTE: When the CL-100 or CL-200 color and
is convenient. When point No.1 color coordinate
has been selected, set the slide switch on the
front panel. The measurement shown after this
displays the deviation from point No.1.
8. Measure the color coordinates at point No.2 and
adjust R and B color of point No.2 so that the
coordinates are as follows.
x = x1 ± 0.005 , y = y1 ± 0.005 (as target)
x = x1 ± 0.010 , y = y1 ± 0.015
9. Measure and adjust their color coordinates of
points No.3 to 17 in the same way starting in
order from the small number points.
This completes adjustments required for -MID-1-
tone.
NOTE: Since excessive correction may lead
to a correction data overview during internal
calculations, use the following values for
reference.
No.2 to 5: ± 40 or less
No.6 to 9: ± 50 or less
No.10 to 13: ± 70 or less
No.14 to 17: ± 120 or less
LWU720i/LHD720i/LWU620i Service Manual
LWU720i / LHD720i / LWU620i
10. Next, adjust the other tones in order of -MIN-,
-MID-3-, -MID-2-, -MID-5-, -MID-4-, -MAX- and
-MID-6-.
11. Adjust each tone as follows, from G color.
-MIN- tone : one and a half of -MID-1- tone
-MID-3- tone : 0 (no adjustment)
-MID-2- tone : a half of -MID-1- tone
-MID-5- tone : 0 (no adjustment)
-MID-4- tone : average of -MID-3- and -MID-5-
tones
-MAX- tone : 0 (no adjustment)
-MID-6- tone : average of -MID-5- and -MAX-
tones
12. Select R or B of point No.2 at -MIN- tone and
13. Measure the color coordinates at point No.1 and
x1, y = y1.
14. Now measure the color coordinates at point
No.2 and adjust R and B color of point No.2 so
that the coordinates are as follows.
x = x1 ± 0.010 , y = y1 ± 0.020 (Target)
x = x1 ± 0.040 , y = y1 ± 0.080
15. Similarly, measure and adjust their color
coordinates of points No.3 to 17 starting in order
from the small number points.
color of -MID-3-, -MID-5- and -MAX- tones.
Adjust them in the same way as the -MIN- tone
adjustments in the step 12 to 15 so that the
coordinates are as follows.
x = x1 ± 0.005 , y = y1 ± 0.005
17. Finally, set the values of the -MID-2-, -MID-4-
and -MID-6- tones as follows using the values
already set.
-MID-2- tone : average of -MID-1- and -MID-3-
tones
-MID-4- tone : average of -MID-3- and -MID-5-
tones
-MID-6- tone : average of -MID-5- and -MAX-
tones
(continued on next page)
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