Download Print this page

Philips 37PFL7422/79 Service Manual page 72

Chassis tpt1.2a la
Hide thumbs Also See for 37PFL7422/79:

Advertisement

72
TPT1.2A LA
8. Alignments
Index of this chapter:
8.1 Electrical Instructions
8.2
Software Updrate With ISPWriter
8.3 Serial Number Definition
Notes: You could adjust the LCD/TV following this chapter when the LCD/TV has the below defect.
1. Change panel. 2. Change or repair main board. 3. LCD/TV color is not right. 4. The settings are disabled.
8.1
Electrical Instructions
8.1.1
TV Mode display adjust
White balance adjustment (B)
General set-up:
Equipment Requirements: Color analyzer.
Input requirements:
Input Signal Type: RF signal
Set to PAL D/K system, frequency=184.25MHz with white pattern of 100%
Input Signal Strength : 10mV (80 dBuV) terminal voltage.
Input Injection Point : TV Tuner input
Color Temp Alignment (B)
Apply full white pattern, select smart setting to be RICH. Adjusting
luminance in factory mode
Adjust
Cool
R, G, B in factory OSD. The 1931 CIE chromaticity (X, Y) co-ordinates
shall be:
Table 1. Reading with Minolta CA-210.
Picture Mode
Normal (Original)
Luminance > 400 cd/m
Set color temp is "WARM" or "NORMAL", their gains are as table 2.They should be
saved in EEPROM by the auto-alignment station of factory.
Table 2. relationship between three kinds of color temp
Scaler R Gain
Scaler G Gain
Scaler B Gain
If you have not CA-210, the following R,G and B values are for your reference.
COOL
R
119
G
119
B
124
This group setting about color temp is also applied in TV/HDMI 1/HDMI 2/
CVI 1/CVI 2/ AV/ SideAV/PC. It means that TV/HDMI 1/HDMI 2/ CVI 1/CVI 2/ AV/ SideAV /PC use one same setting.
8.1.2
PC mode Display Adjustment
WHITE-D adjustment
At factory mode apply both
QuantumData 802R/ 802G/802BT as figure 1. . Set smart picture at "Normal" , and set
Brightness and contrast to be 50%.
Activate AUTO-COLOR function for auto ADC offset and gain setup.
x
0.274 ± 0.005
2
in the center of the screen when both contrast and brightness are 100%.
COOL
NORMAI
R'
R'
G'
G'
B'
B'-8
NORMAI
WARM
119
119
119
114
116
97
1024X768 @60Hz and 1920x1080/60Hz
8. Alignments
Measurement/viewing selector
Measurement/viewing selector
Cool
SCALER GAIN RG B to reach W/D and
y
0.279± 0.005
WARM
R'
G'-5
B'-27
mode with TVBAR100 pattern in
Clear image
Clear image

Hide quick links:

Advertisement

loading