2-1
VPL-CX70/CX75
Section 2
Electrical Adjustments
2-1. Preparation
2-1-1. Required Equipment
.
NTSC, PAL, SECAM component signal generator
Sony Tektronix TG2000
+
AVG1 (option module)
+
AWVG1 (option module) or equivalent
.
VG (programmable video signal generator)
VG854 or equivalent
.
Illuminance meter
.
Chromaticity meter
n
Allow the warm-up time of 5 minutes after the power is on
before starting the following adjustments.
2-1-2. How to Enter the Factory Mode
1.
Confirm that the MENU can be displayed.
2.
Close the MENU.
3.
Press the keys in the following order :
[ENTER]
→
[ENTER]
→
[&]
→
[ENTER]
.
The message [Do you want to enter the Factory Mode?
Yes :
↑
No :
↓
] appears.
Select [Yes :
↑
].
[Supplementary information: How to Exit the
Factory Mode]
Perform the step 3 KEY operation.
The message [Do you want to return to the User Mode?
Yes :
↑
No :
↓
] appears.
Select [Yes :
↑
].
2-2. V COM Adjustment
1.
Connect the VG to the INPUT-A connector. Connect
the FLAT FIELD 100 IRE signal to the input connec-
tor. Leave this unit with POWER ON for 10 minutes
or longer for aging.
2.
Enter the Factory Mode. Enter the Device Adjust
MENU, and then enter the Panel Drive Adjustment
MENU.
3.
Connect the XGA, R-single color, 30 IRE, single-line
ON/OFF signal to the input connector.
4.
Enter the P. DRV Adjustment MENU, and then enter
the VCOM R Adjustment screen.
5.
Adjust the VCOM R value for minimum flicker.
6.
Change the input signal to the XGA, G-single color,
30 IRE, single-line ON/OFF signal, and connect it to
the input connector.
7.
Enter the P. DRV Adjustment MENU, and then enter
the VCOM G Adjustment screen.
8.
Adjust the VCOM G value for minimum flicker.
9.
Change the input signal to the XGA, B-single color, 50
IRE, single-line ON/OFF signal, and connect it to the
input connector.
10. Enter the P. DRV Adjustment MENU, and then enter
the VCOM B Adjustment screen.
11. Adjust the VCOM B value for minimum flicker.
12. Store the adjustment value in the memory.
13. Turn over the “Image flip” up side down and repeat
the steps from 2 through 12.
