Sharp LC-32LE265T Service Manual page 22

LC-32LE265T / LC-40LE265T
B) WHITE BALANCE ADJUSTMENT
a) White Balance Adjustment
NO.
ITEM
1 Setting Backlight : MAX
AV Mode :
DYNAMIC
Active Backlight :
OFF
Set the luminance
meter on the
centre of the
screen
2 Auto
Adjustment
[command]
(1)
Adjustment (2)
Mode
(3)
KRSW0001
(4)
KKT10037
(5)
Setting (6)
KYOF0001
OSDS0001
(7)
SBSL0016
(8)
Multi point
adj. Mode
(9)
MSET0000
(10) Original WB adjustment is performed (HIGH)
WBI20255
Point 2
WBI20229
MG2G****
MG2B****
MG2R**** (11) Measurement
Point 1
WBI10040
MG1G**** (12) Calculation
MG1B****
MG1R****
(13) Set
Write
(14) Calculation
(15) Calculation
MSET0003
(16) Set
(17) Original WB adjustment is performed (LOW).
C O N D I I T O N
For the details of white balance adjustment procedure, please refer to white
balance
adjustment spec for Kameyama model.
1. Confirm the set condition.
2. Connect the white balance jig.
3. Through RS-232C command, adjustment mode screen is displayed.
Initial setting
Measurement MAX Brightness
Set MIN Brightness
Measurement HIGH Brightness
Measurement LOW Brightness
Calculation H
Calculation L
HIGH luminance ( =2.2)
Calculation
Calculation Initial setting of R/G/B_HIGH
Set Initial setting of R/G/B_HIGH
Set the specified gradation for point 2, fix the
most faint colour to get reference value,
adjust others 2 colours to minus adjustment for
reference value of point 2.
HIGH Brightness
(Set) R_HIGH= G_HIGH
G_HIGH= G_HIGH
B_HIGH= G_HIGH
MAX luminance after WB
ADJ set to =2.2 (L
R/G/B_MAX
LOW luminance ( =2.2)
Initial setting of R/G/B_LOW
Initial setting of R/G/B_LOW
Set the specified gradation for point 1. Set G of
point 1 to the default value [(R1 x G value
P R O C
C
= 5000:1
nt
WB
= 4080
MAX
WB
H
= 3664/4080
WB
L
= 640/4080
L =305.7 cd/m²
max
L = L
min max
L =235.1 cd/m²
XH
L =2.06 cd/m²
XL
H =LOG((L
LOG(WB
L =LOG((L
LOG(WB
L =(L
max
H22
(WB /WB
H
WB =WB
HX
(1/H )=3703
R_HIGH=WB
G_HIGH=WB
B_HIGH=WB
R_HIGH=3702
G_HIGH=3641
B_HIGH=3703
R_HIGH=3641
G_HIGH=3641
)
XHG
B_HIGH=3641
L =L
XMX XHG
R_MAX=G_MAX*(R_HIGH/G_HIGH)=4078
G_MAX=WB
L ))^(1/H )=4010
min
B_MAX=G_MAX*(B_HIGH/G_HIGH)=4078
L =(L
XLX XMX
WB =WB
LX
L ))^(1/L )=901
min
3 – 15
E D U R E
Example: G6 panel also use
for G8/ CSOT, CMI (be careful
of INT setting)
/C = 0.102
nt
-L )/(L -L ))/
min max min
XH
/WB )= 2.44
H MAX
-L )/(L -L ))/
min max min
XL
/WB )=2.73
L MAX
-L ) x
min
)^2.2+L =241.31
min
MAX
X ((L -L )/(L -L
min max min
MAX H22
'=3703
HX
'=3703
HX
'=3703
HX
RESULT
L 231.3
=
XHG
/((W /WB )^2.2)=293.04
B
H MAX
X ((L -L )/(L -
min max
MAX XMX
-L ) x (WB /WB )^2.2+L
min
L MAX
X ((L -L )/(L -
min max
MAX XLX
))^
=5.08
min