Philips HUSON7 Series, Service Manual

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22
190X7&170X7 LCD
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Electrical instructions(190X7)
2.3 Allowed 85 Hz overscan signal mode specified
Once the signal input of PC is 85Hz, this monitor is able to
display at least for
10 minutes. An attention signal appears and shows "THIS
IS 85HZ OVERDRIVE, CHANGE COMPUTER DISPLAY INPUT TO
1280X1024 @ 60 HZ"
Dot rate (MHz) H. Freq (KHz) Mode Resolution V. Freq (Hz)
36.000 43.269 VESA 640 * 480 85.008
5 56.250 53.674 VESA 800 * 600 85.061
94.500 68.677 VESA 1024 * 768 84.997
3. Power Supply (S)
Setup the AC I/P at 90VAC, and Output DC loading at 12V 3.7 Amp,
5V 2.1 Amp,
The DC output voltages are 5V
±
0.25V and 12V
±
1.2V.
4. Display Adjustment
4.1 Access to factory mode (RS232) in auto-alignment system
The communication protocol switch to RS232 .
4.2 Auto color adjustment (B)
Apply timing 1280*1024 /60 Hz with 32 gray pattern.
Set brightness to 100% and contrast to 50%.
Alignment program will adjust R/G/B offset and gain to
calibrate the color automatically.
After finishing the adjustment, check the color performance with
64-gray level pattern.
The adjacent levels should be distinguishable.
Check Factory Preset 19 modes.
4.3 Adjustment of WHITE-D (B)
4.3.1 Use Minolta CA-110 for color coordinates check:
Apply timing 1280*1024 /60 Hz with white pattern.
Set brightness control to100% and contrast control to
50%.
Adjust the R, G, B Sub-gain, for the screen center,
the 1931 CIE chromaticity (X, Y) coordinates shall be
9300 ° K 6500 ° K
x (center) 0.283 ± 0.005 0.313 ± 0.005
y (center) 0.297 ± 0.005 0.329 ± 0.005
4.3.2 Use Minolta CA-110 for luminance check:
Apply timing 1280*1024 /60 Hz with white pattern.
Set brightness control to 100% and
contrast control to100% to check the luminance in
the center of the screen.
(1) >= 250 Nit for Original Color
(2) 215
±
10 Nit for 6500
°
K
4.4 Adjustment of sRGB
Apply a 1280*1024 / 60Hz signal with white pattern, set
brightness to 100%, and
contrast to 50%. Adjust the R, G, B Sub-Gain, for the screen
center, the 1931 CIE
chromaticity (X, Y) co-ordinates shall be;
sRGB
x(center) 0.313 ± 0.005
y(center) 0.329 ± 0.005
Ynits 180 ± 10
4.5 EEPROM presetting (B)
4.6
After finishing all the adjustment need to reset:
"Brightness" to 100%
"Contrast" to 50%
"OSD position" at middle of screen
"Color" to Original color temperature
"Stand-Alone" set to Off
"Mute" set to Off
Remark : Color temperature default setting depends on the
region of the model.
For European (/00) and NAFTA/LATAM (/27)
models, it is Original color
For APMEA model (/69,/75,/93,/96,/97), it is
9300
°
K
For LATAM (Manaus production) model (/78), it is
6500
°
K