LG 42LB4DS (CHASSIS:LA73A) Service Manual ▷ View online
- 17 -
7. White Balance adjustment
7-1. Using device
A. Color Analyzer : CA-210 (CH 9)
When adjusting the LCD white balance, use CS-1000 as the
color analyzer (CA-210) and channel 9 corrected of Matrix
(corrected for White, Red, Green, Blue) and the adjustment
must be done in accordance with the White balance
adjustment coordinate.
color analyzer (CA-210) and channel 9 corrected of Matrix
(corrected for White, Red, Green, Blue) and the adjustment
must be done in accordance with the White balance
adjustment coordinate.
B. Automatic adjuster (Necessary for automatic adjustment, must
be able to communicate with RS-232C, Baud Rate : 115200)
C. Video Signal Generator MSPG-925F 720p, 216Gray(Model :
217, Pattern 78
7-2. Measuring device connection diagram
(for automatic adjustment)
=> Connection diagram for internal pattern
=> Connection diagram for HDMI input
7-3. White Balance adjustment method
Basically it uses the internal pattern but when internal pattern is
not possible, you can select HDMI input for adjustment. Through
the option at the most bottom part of the Ez Adjust Menu 7.White
Balance menu, you can select NONE, INNER and HDMI, and the
default is set to INNER. When the adjustment cannot be done
with the internal pattern, you can select HDMI input for
adjustment.
not possible, you can select HDMI input for adjustment. Through
the option at the most bottom part of the Ez Adjust Menu 7.White
Balance menu, you can select NONE, INNER and HDMI, and the
default is set to INNER. When the adjustment cannot be done
with the internal pattern, you can select HDMI input for
adjustment.
For manual adjustment, press the ADJ KEY of the adjustment
R/C to enter Ez Adjust 7.White-Balance, and the pattern is
automatically displayed. (When you set the Option to INNER, the
default is always set to INNER)
R/C to enter Ez Adjust 7.White-Balance, and the pattern is
automatically displayed. (When you set the Option to INNER, the
default is always set to INNER)
A. Connect the set according to the internal pattern or HDMI
input in accordance with 4.3.2 measuring device connection
diagram.
diagram.
B. Set the Baud Rate of RS-232C to 115200. It is set to 115200
as default.
C. Connect the RS-232C Cable to the set.
D. Connect the HDMI Cable to the set. (Limited to the set with
D. Connect the HDMI Cable to the set. (Limited to the set with
HDMI option)
E. Select and adjust the model applicable to LA73A chassis from
the adjuster
Caution) For automatic adjustment, RS-232C Command and
Chassis are commonly applied
7.3.1 White Balance adjustment (For automatic adjustment)
- Execute Power Only Key of the adjustment R/C to execute
automatic adjustment. Set the Baud Rate to 115200.
: Always start adjustment with "wb 00 00" and end
adjustment with "wb 00 ff"
: Adjust the offset if necessary.
7-4. White Balance adjustment
(For manual adjustment)
O Using device: CA-210
=> When adjusting the plasma white balance, use CS-1000
as the color analyzer (CA-210) and channel 9 corrected of
Matrix (corrected for White, Red, Green, Blue) and the
adjustment must be done in accordance with the below
White balance adjustment coordinate.
Matrix (corrected for White, Red, Green, Blue) and the
adjustment must be done in accordance with the below
White balance adjustment coordinate.
O Manual adjustment must be done in the following order
A. Press the ADJ of adjustment R/C to enter ‘EZ-ADJUST’.
B. Select 10.TEST PATTERN using the CH + / - KEY and
B. Select 10.TEST PATTERN using the CH + / - KEY and
press the Enter KEY to execute a heat run for more than
30 minutes.
30 minutes.
C. Execute a Zero Calibration for CA-210 and put it at
distance of less than 10Cm from the LCD module surface
center during the adjustment.
center during the adjustment.
D. Press the ADJ of adjustment R/C, select ‘7.White-Balance’
of ‘Ez – Adjust’ and enter the adjustment mode using the
right key (G).
right key (G).
(When you press the ¢∫ button, the screen enters the full
white internal pattern..)
E. The adjustment is executed in 3 different white balance of
COOL, MEDIUM and WARM.
F. When the white balance is Cool,
Fix B Gain 192, fix R-Cut / G-Cut / B-Cut 64,
and use R Gain / G Gain to adjust the High Light.
When the white balance is Medium,
Fix R Gain 192, fix R-Cut / G-Cut / B-Cut 64,
and use G Gain / B Gain to adjust the High Light.
When the white balance is Warm
Fix R Gain 192, fix R-Cut / G-Cut / B-Cut 64,
and use G Gain / B Gain to adjust High Light.
and use R Gain / G Gain to adjust the High Light.
When the white balance is Medium,
Fix R Gain 192, fix R-Cut / G-Cut / B-Cut 64,
and use G Gain / B Gain to adjust the High Light.
When the white balance is Warm
Fix R Gain 192, fix R-Cut / G-Cut / B-Cut 64,
and use G Gain / B Gain to adjust High Light.
G. Use the +, - key for adjustment.
H. When the adjustment is completed, press the OK (Á KEY)
H. When the adjustment is completed, press the OK (Á KEY)
button to move to the Ez –Adjust screen. Press the ADJ
KEY to exit the adjustment mode.
KEY to exit the adjustment mode.
C A -100+
C O L O R
A N A L Y Z E R
T Y PE ; C A -100+
F u l l W h i t e P at t er n
R S-232C
- 18 -
ATI
X2
60
ATI
X2
60
SIF
NT
P3
000
NT
P3
000
I2S
SP
DI
F
I2S
CV
BS
(N
T
M
ai
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DD
R2
64MBx
2
DD
R2
64MBx
2
Flex Bu
s
RG
B
3
0bi
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TPA
A
nal
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Front
En
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U
SB 1.1
I2C
P
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I2C
C
H
1
I2C
C
H
2
I2C
C
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MTV415
Mic
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MTV415
Mic
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U
SB (up
grade rea
dy!!)
Dea
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hen
Sta
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Dea
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Sta
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Vi
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Sc
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0
Vi
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1 or 2
Al
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Al
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Aud
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Vide
o
TP
AV
2
/ L/R
MNT Out
L/
R
COMP1 L/R
COMP2 L/R
RGB L/R
TP_IN1
AV
1
AV
2
AV
1,
Y/
C1
AV
2,
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C2
Flash
(NOR 32MB)
Flash
(NOR 32MB)
Latch
x
2
Latch
x
2
24C
51
2
24C
51
2
Cable
AT/N
T
VSB
LGDT
3303
VSB
LGDT
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63L
V
D
1023
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D
1023
10
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Con.
10
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Con.
Dual
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1
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GPIO
I2S
ATI
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(# of
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CS
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CS
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HDMI
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DMI +
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MST336
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DMI +
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RGB
HD
M
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SP
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SP
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Opt.
FRC
94
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FRC
94
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DD
R1
16MB
DD
R1
16MB
RGB odd
RGB ev
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120
H
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TPB
U
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U
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EMF)
PCI
3:1
Demux
3:1
Demux
24C
16
24C
16
Air
3:1
Demux
3:1
Demux
MSP4
45
0K
MSP4
45
0K
I2S
SIF
TROUBLESHOOTING & BLOCK DIAGRAM
- 19 -
AT
I
(X
260
)
I2C Ma
st
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AT
/N
T Tune
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0x
C2
HDMI
ADC
(M
ST
3361
)
0X9
C
Tem
p.
Se
nsor
(LM7
5)
0X94
U-Com
(MTV
416
)
0x50
I2C_CH
1
(+3.
3V
_
L
&
+5V
_
L)
I2C_CH
2
(+3.
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L
&
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I2C_CH
3
(+3.
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Po
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Ex
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(M
62320
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0X74
Au
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(M
SP
4450K
)
0X80
DAS
P
(N
TP
3000
)
0X54
PD
P M
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le
0x1
C
VS
B/QAM
(L
GD
T3703
)
Main
0X1
C
Live
D
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CS
8416A
0X20
(W
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0X21
(R
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EE
PRO
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C512
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RC
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0x
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(24L
C16
)
5V
5V
5V
2.5
V
- 20 -
+
12.0V
+
12.0V
+6
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V
+6
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V
CS
4344
CS
4344
CS
5340
CS
5340
PQ05
D
Z
1U
PQ05
D
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1U
KI
A
7
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KI
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FAN
1
FAN
1
KIA
7
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KIA
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FAN
2,
3
FAN
2,
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MC
33078
MC
33078
X260
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HY
B18
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(4EA
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HY
B18
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(4EA
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AZ
1117
H
-1.8
AZ
1117
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5
LM7
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L3232
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N
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L3232
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N
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+5
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VS
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+5
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+5V
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Live Power
Dead Power
Live-o
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AZ
1117
H
-3.3
AZ
1117
H
-3.3
LG
D
T
3703
(M
AIN
)
LG
D
T
3703
(M
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)
SC
1565
-1.8
SC
1565
-1.8
IS
L6549
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IS
L6549
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1.2
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MK
3727
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MK
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B18
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MK
3727
D
MK
3727
D
+
19.0V
+
19.0V
NT
P3000
NT
P3000
NT
P3000
NT
P3000
1.8
V
BA033
FP-3
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BA033
FP
-3
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MTV
416
MTV
416
AZ1086
-1
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AZ1086
-1
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AZ
1117
H
-3.3
AZ
1117
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SC
1565
-2.5
SC
1565
-2.5
MS
T
3369
MS
T
3369
9.0
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TE
A6420
TE
A6420
9.0
V
CS
8416
CS
8416
KIA
7
8R09
KIA
7
8R09
MK
3727
D
MK
3727
D
MI
C
2505
MI
C
2505
3.
3V
ST
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24
C08
24
C08
FR
C
94XY
H
F
RC
94XY
H
Live-o
n
24
C512
24
C512
ST
MA
V335
ST
MA
V335
ISP1504
ISP1504
MI
C
2505
MI
C
2505
K
IA7805
K
IA7805
AZ
1085
S
-3.3
AZ
1085
S
-3.3
AZ
1085
S
-1.8
AZ
1085
S
-1.8
24
C16
24
C16
FRC
FRC
SC
1565
-2.6
SC
1565
-2.6
MI
C
3910
-2
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MI
C
3910
-2
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SC
1592
-1.0
SC
1592
-1.0
12.0
V
HY
5D
U281622
HY
5D
U281622
SC
2595
-1.0
SC
2595
-1.0
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