Philips BDL4785SL/00, Service Manual

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BDL4 7 85 S L LCD 2 1
Color Ad j ust m ent
Color adjustment
(1) Input source set the VGA input
(
2 ) S et the picture m ode to st a nd a rd m ode a t user O S D
(3) S et input ti m in g to 19 2 0x1080-VE S A – 60Hz with“80% white” p a ttern
(4) Enter fa ctory O S D, select Color Te m p Turnin g .
(5) Use CA 2 10 re a d the color coordin a te.
(6) Ad j ust the Red, Green, Blue driver to let the color coordin a te to m eet
the t a ble1 spec.
( 7 ) S etup the p a ttern to “30% white” p a ttern.
(8) Ad j ust the Red, Green, Blue o ff set to let the color coordin a te to m eet
the t a ble1 spec
(9) Go to step (5) until the 30% a nd 80% white p a ttern m eet the t a ble 1
spec.
(10) Do step (1) to (9) to g et the drive/o ff set v a lues o f 10000°KColor
Te m per a ture
(11) S et the s am e drive/o ff set v a lues o f 10000°K Color Te m per a ture to
9300°K
(1 2 ) Do step (1) to (9) to g et the drive/o ff set v a lues o f 7 500°KColor
Te m per a ture
(13) S et the s am e drive/o ff set v a lues o f 7 500°K Color Te m per a ture to
6500°K
(14) Do step (1) to (9) to g et the drive/o ff set v a lues o f 5000°KColor
Te m per a ture
Screen Uniformity
Fi g 7 .1 Optic a l m e a sure m ent point
1. Ti m in g : 19 2 0x1080-VE S A – 60Hz, VGA source DEFAULT the unit
a nd select the AN S I BRIGHTNE SS GRID p a ttern .
2 . Ch a n g e the unit to MAX/MAX/MAX f or Bri g htness/Contr a st/Bl a ck
level , Color te m per a ture de fa ult settin g 10000°K.
3. S ur fa ce lu m in a nce is lu m in a nce v a lue a t point 1 a cross the LCD
sur fa ce 50c m f ro m the sur fa ce with a ll pixels displ a yin g white. Fro m
m ore in f or ma tion see Fi g . 7 .1 . When VDDB= 2 4V,IDDB = 4.6 7 A.
LWH=Lon1, Where Lon1 is the lu m in a nce with a ll pixels displ a yin g
white a t center 1 loc a tion. j ust f or re f erence , no spec.
4. Position the CA- 2 10 a t the loc a tions indic a ted on the g rid , there a re
5 points see Fi g 7 .1 .Me a sure a nd Record the v a lues when the
GRID is OFF.
5. P a nel spec bri g htness m ini m u m 360 nits , typic a l 450 nits ,
Lu m in a nce V a ri a tion 1.3(M a x).The v a ri a tion in sur fa ce lu m in a nce,
WHITE is de f ined under 100% bri g htness a s:
WHITE(9P)=M a xi m u m (Lon1, Lon 2 ,…,Lon9)/Mini m u m (Lon1,
Lon 2 ,…Lon9)
Spec and Table list
(1) Re f erence: The v a ri a nce o f color coordin a te vi a Red, Green, Blue :
X Y
Red drive
p
x
p
-
Green drive
p
-
Y
p
Blue drive
p
x
n
Y
n
Red o ff set
n
x
n
-
Green o ff set
n
-
Y
n
Blue o ff set
n
x
p
Y
p
( 2 ) T a ble 1-1,1- 2 ,1-3,1-4,1-5 : Color te m per a ture spec
User O S D (bri g htness= 7 0, contr a st = 50, bl a cklevel = 50) when VGA
User O S D (bri g htness= 7 0, contr a st = 50, bl a cklevel = 50) when DVI
User O S D (bri g htness= 7 0, contr a st = 50, bl a cklevel = 50) when YPbPr
input
User O
S D (bri g htness= 7 0, contr a st = 50, bl a cklevel = 50) when HDMI
input
User O
S D (bri g htness= 7 0, contr a st = 50, bl a cklevel = 50) when DP input
T a ble 1-1
Color te m p ite m VGA / YPbPr / DVI / HDMI / DP
Color te m per a ture 10000
q
K
x
0. 27 9
r
0.015
y 0. 2 9 2
r
0.015
T
a ble 1- 2
Color te m p ite m VGA / YPbPr / DVI / HDMI / DP
Color te m per a ture 9300
q
K
x
0. 2 83
r
0.015
y 0. 2 9 7
r
0.015
T
a ble 1-3
Color te m p ite m VGA / YPbPr / DVI / HDMI / DP
Color te m per a ture 7 500
q
K
x
0. 2 99
r
0.015
y 0.315
r
0.015
T
a ble 1-4
Color te m p ite m VGA / YPbPr / DVI / HDMI / DP
Color te m per a ture 6500
q
K
x
0.313
r
0.015
y 0.3 2 9
r
0.015
T
a ble 1-5
Color te m p ite m VGA / YPbPr / DVI / HDMI / DP
Color te m per a ture 5000
q
K
x 0.346
r
0.015
y 0.359
r
0.015