Philips HUDSON IV 150C5, Руководство по обслуживанию

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Electrical Instructions
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150C5 LCD
11
1 . General points
1 . 1 During the test and measuring, supply a distortion free AC
mains Voltage to the apparatus via an isolated transformer
with low internal resistance.
1 .2 All measurements mentioned hereafter are carried out at a
Normal mains voltage (90 - 1 32 VAC for USA version,
1 95 -264 VAC for EUROPEAN version, or 90 - 264 VAC
for the model with full range power supply, unless otherwise
stated.)
1 .3 All voltages are to be measured or applied with respect to
ground, unless otherwise stated.
Note: don t use heat-sink as ground.
1 .4 The test has to be done on a complete set including LCD
panel after 30 minutes warm-up at least in a room with
temperature of 25 +/- 5 degree C.
1 .5 All values mentioned in this test instruction are only applicable
of a well aligned apparatus, with correct signal.
1 .6 The letters symbols (B) and (S) placed behind the test
instruction denotes (B): carried out 1 00% inspection at
assembly line (S): carried out test by sampling
1 .7 The white balance (color temperature), has to be tested in
subdued lighted room.
1 .8 Repetitive power on/off cycle are allowed except it should
be avoided within 6 sec.
2. Input signal
2. 1 Signal type
Video: 0.7 Vp-p linear, positive polarity
Sync. : TTL level, separate, positive or negative polarity
Signal source: pattern generator format as attachment
(table 1 to 1 4)
Reference generator: Quantum 802BT or VTG 1 250
2.2 Allowed signal mode specified
PRESET VIDEO RESOLUTION
Dot rate (MHz) H.freq (KHz) Mode Resolution V.freq (Hz)
25. 1 75 3 1 .469 VGA 640 * 350 70.087
28.322 3 1 .469 VGA 720 * 400 70.087
25. 1 75 3 1 .469 VGA 640 * 480 59.940
30.240 35.000 MACINTOSH 640 * 480 66.667
3 1 .500 37.86 1 VESA 640 * 480 72.809
3 1 .500 37.500 VESA 640 * 480 75.000
36.000 35. 1 56 VESA 800 * 600 56.250
40.000 37.879 VESA 800 * 600 60.3 1 7
50.000 48.077 VESA 800 * 600 72. 1 88
49.500 46.875 VESA 800 * 600 75.000
57.300 49.700 MACINTOSH 832 * 624 75.000
65.000 48.363 VESA 1 024 * 768 60.004
75.000 56.476 VESA 1 024 * 768 70.069
78.750 60.023 VESA 1 024 * 768 75.029
3. AC Adaptor
3. 1 Setup the AC I/P at 90VAC, and Output DC loading
at
1 2V 1 .6 Amp, 3V3 1 Amp, The DC output voltages
are 3.3V +/- 0. 1 6V DC, and 1 2VDC (+ 11 V ~ 1 6 V)
4. Display Adjustment
4. 1 Auto color adjustment (B)
Apply a 640 * 480 / 60Hz signal with 1 6 level grey test
pattern, set brightness control at 1 00%, and contrast control
at 50%.
Adjust the R. G. B offset, and gain to calibrate the color
smoothly and 64-grey level distinguishable.
4.2 Color temperature adjustment (B)
Apply a 1 024 * 768, 48.36kHz / 60Hz signal with white pattern.
Set brightness control at 1 00%, and contrast control at 50%.
Adjust the R.G. B gain in factory setting to reach special color
temperature on center of screen.
The 1 93 1 CIE chromaticity (X, Y) co-ordinates shall be:
Use Minolta CA- 11 0 for color coordinates and luminance check.
Luminance is > 200 nits in the center of the screen at original
panel color.
9300
°
K 6500
°
K
x (center) 0.283
±
0.005 0.3 1 3
±
0.005
y (center) 0.297
±
0.005 0.329
±
0.005
4.3 Adjustment of sRGB
Apply a 1 024*768 / 60Hz signal with white pattern, set
brightness control at 1 00%, and contrast control at 50%.
Adjust the R, G, B Sub-Gain, for the screen center, the
1 93 1 CIE chromaticity (X, Y) co-ordinates shall be:
sRGB
x(center) 0.3 1 3
±
0.005
y(center) 0.329
±
0.005
Ynits 1 80
±
1 0
4.4 EEPROM presetting (B)
After finishing all the adjustment, set:
Brightness control to 1 00%
Contrast control to 50%
OSD position at middle of screen
COLOR ADJUST to 6500
°
K
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