Philips 32TA1000/79 Service Manual page 51

3. Power supply
3.1 Setup the AC I/P at 264 VAC and 90VAC , and power board
provide two DC Output
The DC output voltage is 24V ± 1V DC for Inverter and
1.
Scaler board Measured point between pin3(+24V) and
pin6(GND) at item 1001 of scaler board
The DC output voltage is 16V ± 1 V DC for Scaler and
2.
Audio board Measured point between pin1(+16V) and
pin6(GND) at item 1001 of scaler board
3.2 Any adjustment is not needed.
4. TV Mode display adjust
4.1 White balance adjustment (B)
4.1.1 General set-up :
Equipment Requirements: Color analyzer.
Input requirements:
Input Signal Type:
1. RF signal Set to PAL system, frequency =184.25MHz
(China); set to PAL system, frequency =189.25MHz (AP)
with white Pattern of 100%.
2. Select Smart picture to Personal mode and check the
x, y data.
Input Signal Strength : 10mV (80 dBuV) terminal voltage.
Input Injection Point : TV Tuner input
Alignment method:
Initial Set-up :
1. Set TV(7119) Brightness =127, Saturate =58,
Contrast =64, Tint =24 in Factory mode.
2. Set Smart picture as "Personal" (Brightness =56,
Saturate =62, Contrast =68, Sharpness =50, Tint =50)
3. Apply "100% Full White" pattern by TV pattern generator.
Alignment :
1. Keep Gain R of video SCALER GAIN equals to 131
2. Adjust the VIDEO SCALER GAIN RGB in Factory
Mode "NORMAL". (See Fig 1.)
[ Enter factory menu : press menu and VOL- keys
together around six seconds]
1. Check (X, Y) co-ordinates as below:
x (center)
y (center)
Table 3: Reading with Minolta CA-110.
2. Check Gain R of video SCALER GAIN, It shall be R=131
3. Check the gray pattern should be distinguish and color
bar is correct
4.1.2 Set TV Color temperature in Factory mode as "WARM", and
"COOL"
The VIDEO SCALER GAIN R\G\B value will be followed below
Normal
R gain 131
G gain G
B gain B
8. Alignments
Normal/ (8500°K)
0.292 ± 0.005
0.293 ± 0.005
WARM COOL
131 131
G-4 G+1
B-9 B+11
FACTORY ADJUST MENU
ORIGINAL PANNEL
SCALER GAIN R G B
AUTO-COLOR (OK)
ADC OFFSET R G B
ADC GAIN R G B
PC OFFSET R G B
7119 SDTV SAT
DVI SHIFT H V
TV SHIFT H V
HD SHIFT H V
SHOW LOCK MESSAGE
HDTV ADC OFFSET
HDTV ADC GAIN
VIDEO SCALER GAIN
SCALER HUE
EXIT
Fig-1
5. PC mode Display Adjustment
5.1 Display quality adjustment
Use timing mode as describe in 2.2, and use the POPO (pixel on
pixel off) pattern to adjust the clock until no stripe and adjust the
phase until clear picture.
Check all pre-set 6 modes.
5.2 WHITE-D adjustment (B)
5.2.1 At factory mode apply 1280X768 @60Hz mode with 32 gray
pattern. Set smart picture at "Normal" , and Brightness to 90%
and Contrast to 50%.Press AUTO-COLOR function for auto
ADC offset and gain setup.
5.2.2 Adjustment
1. Apply a 1280*768 / 60Hz signal with full white pattern, set
brightness control at 90%, and contrast control at 50%.
2. Keep Gain R of scaler gain R G B equals to 131,then adjust
scaler gain R G B.
3. Check (X, Y) co-ordinates as below:
Normal/ (8500°K)
x (center)
y (center)
Table 4: Reading with Minolta CA-110.
4. Check Gain R of video SCALER GAIN, It shall be R=131
5. Check the gray level color poor & noise condition and chromaticity
Note:
1. Use Minolta CA-110 for color coordinates and luminance check.
2. Luminance> 450 cd/m
(NORAML)color and PC Brightness control; Contrast control at
100%.
5.2.3 Set Smart picture as "WARM", and "COOL"
The SCALER GAIN R\G\B value will be followed below
Normal WARM
R gain 131 131
G gain G+4 G-1
B gain B+11 B-4
5.3 Check the digital interface cable (B)
TPF1.4A LA
COLOR
TINT
R G B
R G B
R G B
Value
0.292 ± 0.015
0.293 ± 0.015
2
in the center of the screen at
.
COOL
G+7
G-3
131
51