Electrical Instructions - Philips HUDSON4 150S5 SERIES Service Manual

14 150S5
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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
Reference generator: Quantum 802BT or VTG 1250
2.2 Allowed signal mode specified
PRESET VIDEO RESOLUTION
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.

Electrical Instructions

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:
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
4.4
9300°K
0.283 ± 0.005
x (center)
0.297 ± 0.005
y (center)
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;
sRGB
0.313 ± 0.005
x(center)
0.329 ± 0.005
y(center)
180 ± 10
Ynits
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 6500K
6500°K
0.313 ± 0.005
0.329 ± 0.005