3-5. White Balance Adjustment on Servicing
|
|
1.Input the 80 IRE FLAT FIELD signal to
(COMPONENT)
2.Warm up the unit at least 10 minutes.
3.Enter the Factory Mode (Please refer to
Press the keys in the following order. “ENTER”→ “ENTER”→ “N”→ “ENTER”
The message “Do you wish to enter into the FACTORY MODE? Yes:↑ No:↓ ” will be displayed.
Select “Yes:↑ ”. n
.When leaving the FACTORY MODE, perform item 3.
“Do you wish to return to the USER MODE?
Yes:↑ No:↓ ” will be displayed. Select
“Yes:↑ ”.
.Cannot enter FACTORY MODE by MS channel.
4.Set the COLOR TEMP to MID mode.
5.Set the INPUT signal to the 80 IRE FLAT FIELD
6.Change the CONTRAST: MAX to BRIGHT: MAX.
7.Measure the brightness (Ygmax).
8.Change CONTRAST: 80 to BRIGHT: 50.
9.Enter the P. DRV on the MENU screen by the DEV. ADJ.
10.Adjust the brightness to (0.65 ⋅ Ygmax) by the VAMP/CONT (E) of P DRV.
11.Change the INPUT signal to 80 IRE FLAT FIELD white signal.
12.Change the CONTRAST: MAX to BRIGHT: MAX.
13.Measure the chromaticity (xmax, ymax)
14.Change CONTRAST: 80 to BRIGHT: 50.
15.Adjust the chromaticity to (xmax ±0.002, ymax ± 0.004) by the VAMP/SUB CON R(E) or SUB CON B (E) of P. DRV.
nput the 10 STEP signal to
When varying the chromaticity of each luminance, perform the following adjustments.
1) MID Mode of INPUT-A
1.Input the 100 IRE FLAT FIELD signal to
2.Measure the chromaticity (x, y)
3.Input the 80 IRE FLAT FIELD signal to
4.Adjust the chromaticity (x, y) to the values measured in step 2, by the GAIN R and B of W/B MID mode.
5.Set the INPUT signal to the 30 IRE.
6.Adjust the chromaticity (x, y) to the values measured in step 2, by the BIAS R and B.
7.Repeat above steps 3. to 6. until the chromaticity become the following values.
x ±0.002, y ±0.004 (The x and y are the values measured in step 2.)
2) HIGH Mode of INPUT-A
1.Input the 80 IRE FLAT FIELD signal to
2.Set the GAIN G to MID mode value at “_32” with the HIGH mode of the W/B. And set the GAIN R to MID mode value at “_23”.
3.Set the GAIN R and B that are equal to MID mode values. (Set the GAIN R and B to the same as MID mode values.)
4.Set the BIAS R, G and B that are equal to MID mode values. (Set the BIAS R, G and B to the same as MID mode values.)
5.Measure the chromaticity (x, y)
6.Input the 30 IRE signal to
7.Adjust the chromaticity (x, y) to the values measured in step 2, by the BIAS R and B of W/B HIGH mode.
8.Input the 80 IRE signal to
9.Adjust the chromaticity (x, y) to the values measured in step 2, by the GAIN R and B.
10.Repeat above steps 6. to 9. until the chromaticity become the following values.
x ±0.002, y ±0.004 (The x and y are the values measured in step 5.)
|
