Philips TFT LCD Colour Monitor Service Manual page 40

40 190B4 LCD
White Balance Adjustment
Alignment procedure
1. Turn on 190B4 LCD monitor.
2. Turn on the Timing/Pattern generator. See Fig.1 Setting
generator to provide CROSS-Hatch pattern at
Resolution ¡ G 1280x1024
Timing ¡ G H = 64KHz
V = 60Hz
3. Preset LCD colour Analyzer CA-110
-
- Set "Measuring/viewing selector" to Measuring position
for reset analyzer. (Zero calibration) as Fig. 2
- Turn on the colour analyzer (CA-110).
- Press "0-CAL" button to starting reset analyzer. See Fig.3
4. Entering factory adjustment mode of LCD Monitor.
- To hold and
monitor. Press to bring up OSD menu for
confirmation.
Note¡ G After alignment, please EXIT OSD to Save the
alignment value. To leave factory mode by restart the
monitor.
5. Adjust OSD menu to lower position of screen (i.g. adjust
Colour adjustment
buttons then power on the
V-position to value "0" at submenu of OSD Setting.
6. Setting Brightness and Contrast
- Adjust Brightness to value "100"
- Adjust Contrast to value "70"
7. Switch light probe to "Viewing" position.
8. Move the "Lens barrel" forward or backward to get clear
image as shown in Fig. 4
9. Switch light probe to "Measuring" position. It should be able
to indicate colour value on the CA-110.
10. Setting pattern to full white picture.
11. Press then select Philips 190B4 C081 V1 R00 0531 by
button.
12. Press to bring up submenu as following windows.