Philips 26MF605W/17, Service Manual

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26MF605W/17
Color Adjustment
1. TV Mode display adjust
1.1 White balance adjustment (B)
1.1.1 General set-up :
Equipment Requirements: Color analyzer.
Input requirements:
Input Signal Type : RF signal
1. Set to NTSC system, frequency=187.25MHZ ( for NAFTA
model ), with white pattern of 100%
2. Select Smart picture to Personal mode and check the x, y data.
Input Signal Strength : 10mV (80 dBuV) terminal voltage.
Input Injection Point : TV Tuner input
Alignment method:
Initial Set-up:
1. Set TV(7119) Brightness=142; Saturate =64, Contrast =68
in Factory mode(can be fine tuned).
2. Set Smart picture as "Personal"
3. Apply "100% Full White" pattern by TV pattern generator.
Alignment : Adjust the VIDEO SCALER GAIN RG B in Factory
Mode "NORMAL". (See Fig 1.)
[ Enter factory menu :
1]. Turn off monitor.
2). Press power "Power " button.Then quickly push " Volume -"
and " ",and hold this two buttons,then the screen comes
out "Waiting For Automatic Adjustment ",then the screen will be
black for one second ,untill comes out "Windows screen"] => then
release this two buttons, then press "Menu" button, wait until the
OSD menu with Characters "F1/FL1 NAFTA V0.91.1
041124ADJUST" (below OSD menu) come on the Screen of the
monitor(shown as Fig.1).
Fig. 2
2. PC mode Display Adjustment
2.1 Display quality adjustment:
2.1.1 Use timing mode,
The analogue color LCD monitor must be capable of displaying standard
resolutions within the vertical frequency range of 58
-
63 Hz, and
horizontal scan range of 30 - 50 KHz .
Use the CHROMA-2250 generator as the standard signal timing source.
Dot rate (
MHz)
H.freq (
KHz)
Mode Resolution V.freq (
Hz)
Remark
1 25.175 31.469 IBM VGA 640 * 480 59.940
2 36.000 35.156 VESA 800 * 600 56.250
3 40.000 37.879 VESA 800 * 600 60.317
4 65.000 48.363 VESA 1024 * 768 60.004
5 74.500 44.772 WXGA 1280 * 720 59.855 CVT
6 79.500 47.776 WXGA 1280 * 768 59.87 CVT
Resolution recommend on 1280 X 720 @ 60Hz
2.1.2 use the POPO (pixel on pixel off) pattern to adjust the clock until no
stripe and adjust the phase until clear picture. Check all pre-set 6 modes.
2.2 WHITE-D adjustment (B)
2.2.1 At factory mode apply 1280X720 @60Hz mode with 32 gray
pattern. Set smart picture at "Normal" , and Brightness to 50% and
Contrast to 50%(showns as Fig.3).
Press AUTO-COLOR function for auto ADC offset and gain setup.
2.2.2 Apply full white pattern Set SCALER GAIN R G B = VIDEO
SCALER GAIN R G B.
Factory
Mode--------
Indicator
Fig. 1
Use the CHNNEL- and to select the "F1/FL1
NAFTA V0.91.1 041124 ADJUST" and then press the "VOL +" button
1. Check (X, Y) co-ordinates as below:
Table 3: Reading with Minolta CA-110.
2. Check the gray pattern should be distinguish and color
bar is correct
1.1.2 Set TV Color temperature in Factory mode as "WARM",
and "COOL" The VIDEO SCALER GAIN R\G\B value will
be followed below
.
Picture Mode x y
Normal (Original)
0.289
±
0.005
0.304
±
0.005
Normal/ the R \G \B are
gain after alignment.
WARM COOL
R gain R R R -10
G gain G G -10 G -10
B gain B B -10 B
Fig. 3