37LG50 (CHASSIS:LA84D) - LG TV Service Manual (repair manual). Page 12

Ex)  wb 00 00 : Start Auto-adjustment of white balance.

wb 00 10 : Start Gain Adjustment (Inner pattern) 
ja 00 ff : Adjustment data
jb 00 c0 : 
…
…
wb 00 1f : End of Gain adjustment

* (wb 00 20(start), wb 00 2f(end)) -> In the case of Off-

set adjustment
wb 00 ff : End of white balance adjustment

(3) Adjustment Map

(Automatic Adjustment)

1) The adjustment condition should be set by the Power On

key.

2) Perform the zero calibration of the Color Analyzer and

place the probe close to the display center.

3) Connect the communication cable (RS-232C).
4) Select the desired model of the adjustment program and

perform the adjustment.

5) After the adjustment is ended (check the OK sign), check

the adjustment condition for each mode of the set.
(Warm, Medium, Cool)

6) Disconnect the probe and the communication cable to end

the adjustment.

* The adjustment should be started with "wb 00 00" and

ended with "wb 00 ff", and the offset should be adjusted
when necessary.

1) The adjustment condition should be set by the Power On

key.

2) Press the ADJ of the R/C to enter into ‘EZ-ADJUST’.
3) Select ‘4.WHITE PATTERN’ with the CH +/- key and press

the Enter key for 30 minutes or longer to perform the heat
run.

4) Perform the zero calibration of the Color Analyzer and fix

the sensor with the 10cm or less distance at the center of
the LCD module surface when adjusting.

5) Press the ADJ of the R/C to select ‘3.W/B ADJUST’ of the

Ez-Adjust and press the right arrow key(

G

) to enter into the

adjustment mode. (As soon as you press ‘

G

’, the screen is

entered into the full white inner pattern.)

6) Fix one of the R/G/B gains to 192 and decrease the

remaining two gains to adjust not to exceed 192.

7) The adjustment is done at three white balances of Cool,

Medium and Warm.

* The inner pattern is basically used, and if it is not possible,

the adjustment can be done by selecting the HDMI input.
NONE, INNER or HDMI can be selected by the bottom
option at the Ez Adjust Menu 7.White Balance menu and it is
set to INNER as default. If the adjustment cannot be done by
the inner pattern, select the HDMI to adjust.

* Adjustment environment and reference

1) Environment illuminance

Adjust it to 10 LUX or less at the place where the light
source such as lamp should be blocked at maximum.

2) Probe location

: Maintain the Color Analyzer (CA-210) close to the

module surface by 10cm or less and keep the probe of
the Color Analyzer perpendicular to the module
surface (80°~ 100°).

3) Aging time

- Keep the power on after the aging start (with no power

off) to perform the heat run for 15 minutes or longer.

- Make sure that the back light is turned on by using no

signal and the full white pattern or others.

(1) Brightness: Full white 216 Gray 
(2) Standard color coordinate and white balance when using

the CS-1000

(3) Standard color coordinate and white balance when using

the CA-210 (CH 10)

- 12 -

ITEM

Command

Data Range

Default

(Hex.)

(Decimal)

Cmd 1

Cmd 2

Min

Max

Cool

R-Gain

j

g

00

C0

TBD

G-Gain

j

h

00

C0

TBD

B-Gain

j

i

00

C0

TBD

R-Cut

TBD

G-Cut

TBD

B-Cut

TBD

Medium

R-Gain

j

a

00

C0

TBD

G-Gain

j

b

00

C0

TBD

B-Gain

j

c

00

C0

TBD

R-Cut

TBD

G-Cut

TBD

B-Cut

TBD

Warm

R-Gain

j

d

00

C0

TBD

G-Gain

j

e

00

C0

TBD

B-Gain

j

f

00

C0

TBD

R-Cut

TBD

G-Cut

TBD

Mode

Color Coordination

Temp

∆UV

x

y

COOL

0.276

0.283

11000K

0.0000

MEDIUM

0.285

0.293

9300K

0.0000

WARM

0.313

0.329

6500K

0.0000

Mode

Color Coordination

Temp

∆UV

x

y

COOL

0.276±0.002

0.283±0.002

11000K

0.0000

MEDIUM

0.285±0.002

0.293±0.002

9300K

0.0000

WARM

0.313+0.002

0.329±0.002

6500K

0.0000