Color Adjustment - Philips BDL4651VH/00 Service Manual

18 BDL4651VH LCD

Color adjustment

(1) Input source set the YPbPr (VGA / DVI / HDMI) input
(2) After ADC Calibration
(3) Set the picture mode to standard mode at user OSD
(4) Set input timing to SDTV480P with"80% white" pattern
(5) Enter factory OSD, select Color Temp Turning .
(6) Use CA210 read the color coordinate.
(7) Adjust the Red, Green, Blue driver to let the color coordinate to meet
the table1 spec.
(8) Setup the pattern to "30% white" pattern.
(9) Adjust the Red, Green, Blue offset to let the color coordinate to meet
the table1 spec
(10) Go to step (6) until the 30% and 80% white pattern meet the table 1
spec.
(11) Do step (1) to (10) to get the drive/offset values of10000°KColor
Temperature
(12) Set the same drive/offset values of 10000°K Color Temperature to
9300°K
(13) Do step (1) to (10) to get the drive/offset values of 8000°KColor
Temperature
(14) Do step (1) to (10) to get the drive/offset values of 6500°KColor
Temperature
(15) Set the same drive/offset values of 6500°K Color Temperature to
5000°K
Video Color adjustment:
(1) Input source set the CVBS1 ( CVBS2 / S-Video ) input.
(2) Set the picture mode to standard mode at user OSD.
(3) Setup input timing to NTSC with"80% white" pattern
(4) Enter factory OSD, select Color Temp Turning
(5) Use CA210 read the color coordinate.
(6) Adjust the Red, Green, Blue driver to let the color coordinate to meet
the table1 spec.
(7) Setup the pattern to "30% white" pattern.
(8) Adjust the Red , Green , Blue offset to let the color coordinate to
meet the table1 spec
(9) Go to step (5) until the 30% and 80% white pattern meet the table 1
spec.
(10) (Do step (1) to (9) to get the drive/offset values of10000°KColor
Temperature
(11) Set the same drive/offset values of 10000°K Color Temperature to
9300°K
(12) Do step (1) to (9) to get the drive/offset values of 8000°KColor
Temperature
(13) Do step (1) to (9) to get the drive/offset values of 6500°KColor
Temperature
(14) Set the same drive/offset values of 6500°K Color Temperature to
5800°K
Screen Uniformity
Fig 7.1 Optical measurement point
(1) Timing: SDTV480P @ 60Hz , YPbPr source
(2) DEFAULT the unit and select the ANSI BRIGHTNESS GRID
pattern .
(3) Change the unit to MAX/MAX for Contrast/Black level , Color
temperature default setting 8000°K.
(4) Surface luminance is luminance value at point 1 across the LCD
surface 50cm from the surface with all pixels displaying white. From
Color Adjustment
more information see Fig. 7.1 . When VDDB =24V,IDDB = 8.5 A.
LWH=Lon1, Where Lon1 is the luminance with all pixels displaying
white at center 1 location. just for reference , no spec
(5) Position the CA-210 at the locations indicated on the grid , there are
5 points see Fig 7.1 . Measure and Record the values when the
GRID is OFF.
(6) Panel spec brightness minimum 1200 nits , typical 1500 nits ,
Luminance Variation 1.3(Max).
The variation in surface luminance, WHITE is defined under 100%
brightness as:
WHITE(9P)=Maximum(Lon1, Lon2,...,Lon9)/Minimum(Lon1,
Lon2,...Lon9)
Spec and Table list
(1) Reference: The variance of color coordinate via Red, Green, Blue :
Green drive p
Blue drive p
Red offset n
Green offset n
Blue offset n
(2) Table 1-1,1-2,1-3,1-4,1-5 : Color temperature spec
User OSD (brightness=70, contrast = 50) when VGA DVI
User OSD (brightness=70, contrast = 49) when HDMI(PC mode) input
User OSD (brightness=70, contrast = 55) when YPbPr HDMI (Video
mode) input
User OSD (brightness=70, contrast = 63) when HDMI(Video mode) input
User OSD (brightness=70, contrast = 72) when CVBS S-Video input
Table 1-1
Color temp item
@factory OSD
Color temperature
Table 1-2
Color temp item
@factory OSD
Color temperature
Table 1-3
Color temp item
@factory OSD
Color temperature
x
y
Table 1-4
Color temp item
@factory OSD
Color temperature
x
y
Table 1-5
Color temp item
@factory OSD
Color temperature
X
Red drive p x p
-
x n
x n
-
x p
CVBS1 / CVBS2 / S-VIDEO /
VGA / YPbPr / DVI / HDMI
x
0.279r0.015
y
0.292r0.015
CVBS1 / CVBS2 / S-VIDEO /
VGA / YPbPr / DVI / HDMI
x
0.283r0.015
y
0.297r0.015
CVBS1 / CVBS2 / S-VIDEO /
VGA / YPbPr / DVI / HDMI
8000qK
0.295r0.015
0.305r0.015
CVBS1 / CVBS2 / S-VIDEO /
VGA / YPbPr / DVI / HDMI
6500qK
0.313r0.015
0.329r0.015
CVBS1 / CVBS2 / S-VIDEO /
VGA / YPbPr / DVI / HDMI
x
0.346r0.015
y
0.359r0.015
.
Y
-
Y p
Y n
-
Y n
Y p
10000qK
9300qK
5000qK