Electrical Instructions - Philips HUDSON IV 150C5 Service Manual

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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 - 132 VAC for USA version,
195 -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 100% 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 14)
Reference generator: Quantum 802BT or VTG 1250
2.2 Allowed signal mode specified
PRESET VIDEO RESOLUTION
Dot rate (MHz) H.freq (KHz)
25.175 31.469
28.322 31.469
25.175 31.469
30.240 35.000
31.500 37.861
31.500 37.500
36.000 35.156
40.000 37.879
50.000 48.077
49.500 46.875
57.300 49.700
65.000 48.363
75.000 56.476
78.750 60.023
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Electrical Instructions

Mode Resolution V.freq (Hz)
VGA 640 * 350 70.087
VGA 720 * 400 70.087
VGA 640 * 480 59.940
MACINTOSH 640 * 480 66.667
VESA 640 * 480 72.809
VESA 640 * 480 75.000
VESA 800 * 600 56.250
VESA 800 * 600 60.317
VESA 800 * 600 72.188
VESA 800 * 600 75.000
MACINTOSH 832 * 624 75.000
VESA 1024 * 768 60.004
VESA 1024 * 768 70.069
VESA 1024 * 768 75.029
3. AC Adaptor
3.1 Setup the AC I/P at 90VAC, and Output DC loading
at 12V 1.6 Amp, 3V3 1Amp, The DC output voltages
are 3.3V +/- 0.16V DC, and 12VDC (+11V ~ 16 V)
4. Display Adjustment
4.1 Auto color adjustment (B)
Apply a 640 * 480 / 60Hz signal with 16 level grey test
pattern, set brightness control at 100%, 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 1024 * 768, 48.36kHz / 60Hz signal with white pattern.
Set brightness control at 100%, and contrast control at 50%.
Adjust the R.G. B gain in factory setting to reach special color
temperature on center of screen.
The 1931 CIE chromaticity (X, Y) co-ordinates shall be:
9300°K
0.283 ± 0.005
x (center)
0.297 ± 0.005
y (center)
Use Minolta CA-110 for color coordinates and luminance check.
Luminance is > 200 nits in the center of the screen at original
panel color.
4.3 Adjustment of sRGB
Apply a 1024*768 / 60Hz signal with white pattern, set
brightness control at 100%, and contrast control at 50%.
Adjust the R, G, B Sub-Gain, for the screen center, the
1931 CIE chromaticity (X, Y) co-ordinates shall be:
x(center)
y(center)
Ynits
4.4 EEPROM presetting (B)
After finishing all the adjustment, set:
Brightness control to 100%
Contrast control to 50%
OSD position at middle of screen
COLOR ADJUST to 6500°K
150C5 LCD
Go to cover page
6500°K
0.313 ± 0.005
0.329 ± 0.005
sRGB
0.313 ± 0.005
0.329 ± 0.005
180 ± 10
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