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3-7
VPL-HS1
3-5. White Balance Adjustment on
Servicing
3-5-1. Signal Level Adjustment
1. Input the 80 IRE FLAT FIELD signal to INPUT-A.
(COMPONENT)
2. Warm up the unit at least 10 minutes.
3. Enter the Factory Mode (Please refer to 3-1-3)
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
GREEN-only mode.
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.
3-5-2. White Balance Adjustment
nput the 10 STEP signal to INPUT-A, and observe the
chromaticity of each luminance.
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 INPUT-A
2. Measure the chromaticity (x, y)
3. Input the 80 IRE FLAT FIELD signal to INPUT-A.
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 INPUT-A.
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 INPUT-A.
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 INPUT-A.
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.)