Philips 37TA1800/93 Service Manual page 48

48 TPT1.0A LA
Item 720X576P
50Hz
Pixel rate 27 MHz
(37.037 ns)
Horizontal 31.25 KHz
Frequency
Active 720 pixels
(26.667 us)
Blank 144 pixels
(5.333 us)
Period 864 pixels
(42.000 us)
Pulse delay 12 pixels
(0.444 us)
Pulse width 64 pixels
(2.370 us)
Vertical 50 Hz
Frequency
Active 576 lines
(18.442 ms)
Blank 49 lines
(1.568 ms )
Period 625 lines
(20.000 ms)
Pulse delay 5 lines
(0.160 ms)
Pulse width 5 lines
(0.160 ms)
EQ before 0 line
EQ after 0 line
Scan Progressive
Sync type ACS
Video kind Analog
YPbPr
(SMPTE
RP177)
2.5 HDMI input mode
1 1440x480i/59Hz, 60Hz, 1440x576i/50Hz
2 720x480p/59Hz, 60Hz,
720x576p/50Hz,
3 1440x480p/59Hz, 60Hz,
1440x576p/50Hz
4 1280X720p, 50Hz , 59Hz, 60Hz
5 1920X1080i, 50Hz, 59Hz, 60Hz
3. Power supply
3.1 Setup the AC I/P at 264 VAC and 90VAC , and power board
provide two DC Output
1. The DC output voltage is 24V ± 1V DC for Inverter and Scaler
board Measured point between pin3(+24V) and pin6(GND) at
item CN122 of scaler board
2. The DC output voltage is 16V ± 1 V DC for Scaler and Audio
board Measured point between pin1(+16V) and pin6(GND) at
item CN122 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: RF signal
Set to PAL D/K system, frequency=184.25MHz ( for China
model ) with white pattern of 100%
Input Signal Strength : 10mV (80 dBuV) terminal voltage.
Input Injection Point : TV Tuner input
4.1.2 Color Temp Alignment (B)
720X480P 720X576i
60Hz 50Hz
27.027MHz 13.5MHz
(37.000 ns) ( 74.074 ns )
31.5KHz 15.625KHz
720 pixels 720 pixels
(26.640 us) (53.333 us)
138 pixels 144 pixels
(5.106 us) ( 10.667 us )
858 pixels 864 pixels
(31.746 us) ( 64.00 us )
16 pixels 12 pixels
(0.592 us) ( 0.889 us )
62 pixels 64 pixels
(2.294 us) ( 4.741 us )
60 Hz 50 Hz
480 lines 576 lines
(15.238 ms) ( 36.864 ms )
45 lines 49 lines
(1.429 ms) (3.136 ms )
525 lines 625 lines
(16.667 ms) ( 40 ms )
9 lines 2 lines
(0.287 ms) ( 0.128 ms )
6 lines 3 lines
(0.190 ms) (0.192 ms )
0 line 2 line
0 line 2 line
Progressive Interlace
ACS ACS
Analog Analog YPbPr
YPbPr (SMPTE
(SMPTE RP177 )
RP177)
7. Alignments
Apply full white pattern, select smart setting to be PERSONAL.
720X480i
60Hz
Adjusting Normal
13.5MHz
luminance in factory mode
( 74.074 ns )
Adjust Normal R, G, B in factory OSD. The 1931 CIE
15.734KHz
chromaticity (X, Y) co-ordinates shall be:
720 pixels
Table 4. Reading with Minolta CA-110.
(53.333 us)
138 pixels
Picture Mode
( 10.222 us )
Normal (Original)
858 pixels
( 63.556 us )
Luminance > 400 cd/m
19 pixels
Smart picture at contrast 100% and brightness 100%.
( 1.407 us )
4.1.3 Set color temp is "WARM" or "COOL", their gains are
62 pixels
as table 5.They should be saved in EEPROM by the
( 4.593 us )
auto-alignment station of factory.
59.94 Hz
Table 5. relationship between three kinds of color temp
480 lines
( 30.507
ms )
45 lines
Scaler R Gain
(2.860 ms )
525 lines
Scaler G Gain
( 33.367
ms )
Scaler B Gain
4 lines
4.1.4 This group setting about color temp is also applied in
( 0.254 ms )
TV/ Comp1 video 1/Comp video 2 /S-video 1/ S-video
3 lines
(0.191 ms )
2/ AV1/AV2/PC. It means that TV/AV1/AV2/S-video 1/
3 line
S-video 2/ Comp1 video 1/Comp video 2 /PC use one
3 line
same setting.
Interlace
ACS
5. PC mode Display Adjustment
Analog
YPbPr
(SMPTE
5.1 WHITE-D adjustment (B)
RP177 )
5.1.1 At factory mode apply 1024X768 @60Hz mode with TVBAR100
pattern in 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.
5.1.2 Apply full white pattern , check picture must satisfy table 6.
Table 6. Reading with Minolta CA-210.
Picture Mode
Normal (Original)
Luminance> 400 cd/m
both PC Brightness and Contrast control are 100%.
5.2 Display quality adjustment
Use timing mode as described in 2.2, and uses the POPO (pixel
on pixel off) pattern to adjust the clock until no stripe and adjust
the phase until clear picture.(AUTO ADJUST hot key: press
Volume - and Volume + keys together for 1 second.)
Check all preset 6 modes.
SCALER GAIN RG B to reach W/D and
x y
0.283 ± 0.005
0.297± 0.005
2
in the center of the screen when
Normal Warm Cool
R' R' R'-10
G' G'-5 G'-9
B' B'-20 B'
Figure 1. TVBAR100
x y
0.283 ± 0.015
0.297± 0.015
2
in the center of the screen when