White Balance Adjustment - Sharp LC-32LE265T Service Manual

B) WHITE BALANCE ADJUSTMENT
a) White Balance Adjustment
NO.
ITEM C O
1 Setting Backlight : MAX
AV Mode :
DYNAMIC
Active Backlight :
OFF
Set the luminance
meter on the
centre of the
screen
2 Auto
Adjustment Initial setting
[command]
(1) Measurement
Adjustment
(2) Set
Mode (3) Measurement
KRSW0001
(4) Measurement
KKT10037
(5) Calculation
Setting
(6) Calculation
KYOF0001
OSDS0001
(7) Calculation
SBSL0016
(8) Calculation
Multi point
adj. Mode
(9) Set
MSET0000
(10) Original WB adjustment is performed (HIGH)
WBI20255
Set the specified gradation for point 2, fix the
Point 2
most faint colour to get reference value,
WBI20229 adjust others 2 colours to minus adjustment for
MG2G**** reference value of point 2.
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).
Set the specified gradation for point 1. Set G of
point 1 to the default value [(R1 x G value
Set
of point 2/R2), with fractions rounded] and
Max.Level
adjust RB to the reference value of point 1.
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.
MAX Brightness
MIN Brightness
HIGH Brightness
LOW Brightness
H
L
HIGH luminance ( =2.2)
Initial setting of R/G/B_HIGH
Initial setting of R/G/B_HIGH
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
XHG
R/G/B_MAX
LOW luminance ( =2.2)
Initial setting of R/G/B_LOW
Initial setting of R/G/B_LOW
P R O C E D
C
= 5000:1
nt
WB
= 4080
MAX
WB
H
= 3664/4080
WB
L = 640/4080
L =305.7 cd/m²
max
L = L /C
min max
L =235.1 cd/m²
XH
L =2.06 cd/m²
XL
H =LOG((L
XH
LOG(WB /WB
H
L =LOG((L
XL
LOG(WB /WB
L
L =(L -L
max
H22
(WB /WB
H MAX
WB =WB
HX MAX
(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
)
B_HIGH=3641
L =L /((W
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 -L
XLX XMX
WB =WB
LX MAX
L ))^(1/L )=901
min
R_LOW=WB
3 – 8
LC-32LE265T / LC-40LE265T
U R E
Example: G6 panel also use
for G8/ CSOT, CMI (be careful
of INT setting)
= 0.102
nt
-L )/(L -L ))/
min max min
)= 2.44
MAX
-L )/(L -L ))/
min max min
)=2.73
MAX
) x
min
)^2.2+L =241.31
min
X ((L -L )/(L -L ))^
min max min
H22
'=3703
HX
'=3703
HX
'=3703
HX
RESULT
L 231.3
=
XHG
/WB )^2.2)=293.04
B
H MAX
X ((L -L )/(L -
min max
MAX XMX
) x (WB /WB )^2.2+L
min min
L MAX
X ((L -L )/(L -
min max
XLX
=901
XLX
=5.08