Video W/B Low Mode Adjustment; High Mode; Low Mode - Sony VPL-PX20 Service Manual

11. Adjust the 100 IRE section of the signal for 6.1 ± 0.05
Vdc with GAIN R and adjust the 100 IRE section of
the signal for 3.0 ± 0.05 Vdc with BAIS R.
12. Select the SAVE TO MEMORY from the W/B
ADJUST page of the menu, and press the ENTER key
to save the data.
13. Enter the OTHER of the device adjust of the menu.
14. Reset 06 3D GAMMA/THROUGH: 1 to 06 3D
GAMMA/THROUGH: 0.
15. Reset 07 3D GAMMA/SW: 0 to 07 3D GAMMA/SW: 1.
16. Select the SAVE TO MEMORY from the Device
adjust page of the menu, and press the ENTER key to
save the data.

4-5. VIDEO W/B Low Mode Adjustment

1. Input the component flat field signal to INPUT-A.
2. Select the INPUT-A, then select the COMPONENT
with INPUT-A of SET SETTING.
3. Set the D.PICTURE of PICTURE CONTROL to off.
4. Set the "06 3D GAMMA/THROUGH" to "0" (LUT ON).
5. Set the "07 3D GAMMA/SW" to "1" (3D GAMMA ON).

4-5-1. High Mode

1. Enter the HIGH MODE.
2. Make sure that the R/G/B GAIN and BIAS are
adjusted properly.
3. Input the 80 IRE component flat field signal to
INPUT-A.
4. Adjust the y value by the G GAIN of W/B HIGH.
When the x value after the y value adjustment is
greater than the specification, use the Blue as reference
color. If it is smaller than the specification, use the Red
as reference color. Adjust the color as shown below
with the GAIN other than the reference color.
5. Input the 30 IRE component flat field signal to INPUT-
A.
6. Adjust the color as shown below with the BIAS other
than the reference color.
7. Perform the 80 IRE and the 30 IRE adjustments above
repeatedly until the specifications are met.
8. Select the SAVE TO MEMORY from the W/B
ADJUST page of the menu, and press the ENTER key
to save the data.
HIGH MODE color specifications:
(x, y)=(0.275, 0.312) ± 0.005 (80 IRE)
(x, y)=(0.275, 0.312) ± 0.007 (30 IRE)
VPL-PX20/PX30

4-5-2. Low Mode

1. Enter the LOW MODE.
2. Make sure that the same data as W/B HIGH are
written in the R/G/B GAIN and BIAS.
3. Input the 80 IRE component flat field signal to
INPUT-A.
4. Adjust the Y value by the G GAIN. When the X value
after the Y value adjustment is greater than the
specification, use the Blue as reference color. If it is
smaller than the specification, use the Red as reference
color. Adjust the color as shown below with the GAIN
other than the reference color.
5. Input the 30 IRE component flat field signal to
INPUT-A.
6. Adjust the color as shown below with the BIAS other
than the reference color.
7. Perform the 80 IRE and the 30 IRE adjustments above
repeatedly until the specifications are met.
8. Select the SAVE TO MEMORY from the W/B
ADJUST page of the menu, and press the ENTER key
to save the data.
LOW MODE color specifications:
(x, y)=(0.283, 0.331) ± 0.005(80 IRE)
(x, y)=(0.283, 0.331) ± 0.007 (30 IRE)
4-5