50PG20R-TA (CHASSIS:PP81A) - LG TV Service Manual (repair manual). Page 12

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O

DDC Adjustment Command Set 

[ R/G/B GAIN max value : C0

Adjustment mode: Two modes of Medium(Vivid) and Warm
(Cool data is automatically calibrated by the Medium data)

- Equipment : 1) Color analyzer(CA100+, CA210) should be

used in the calibrated ch by CS-1000(.(LCD :
CH9, PDP : CH10)

2) Adjustment remocon

-  For  manual  adjustment,  it  is  also  possible  by  the  following

sequence.
Operate the zero-calibration of the CA-100+ or CA-210, then
stick sensor to the module when adjusting.

(1) Select white pattern of heat-run by pressing “POWER ON”

key on remote control for adjustment then operate heat run
longer than 15 minutes. (recommend) 
(If  not  executed  this  step,  the  condition  for  W/B  will  be
different)

(2)  Changing  to  the  AV  mode  by  remote  control.(Push  front-

AV)

(3) Input external pattern(85% white pattern).
(4) Stick sensor to center of the screen and select each items

(Red/Green/Blue  Gain  and  Offset)  using 

D

/

E

(CH  +/-)  key

on R/C..

(5) Adjust R/ G/B Gain using 

F

/

G

(VOL +/-) key on R/C.

(6)  Adjust  two  modes  of  Medium(Vivid)  and  Warm  as  below

figure.
(Fix the one of R/G/B and change the others)
1) Default : Medium(Vivid)
2) Push the “VOL +” key twice : Warm

[ Refer to the below case to know what value is fixed.

[CASE]
First adjust the coordinate much away from the target value(x, y).

1. x, y > target

1) Decrease the R, G. 

2. x, y < target

1) First decrease the B gain, 
2) Decrease the one of the others.

- In case of decreasing the x, decreasing the R : fix G
- In case of decreasing the y , decreasing the G : fix R

3. x > target ,  y < target

1) First decrease B, so make y a little more than the target.
2) Adjust x value by decreasing the R

4. x < target ,  y > target

1) First decrease B, so make x a little more than the target.
2) Adjust x value by decreasing the G

(7)  When  adjustment  is  completed,  Exit  adjustment  mode

using EXIT key on R/C.

Adjustment

content

Aging On/Off

input select

R GAIN

G GAIN

B GAIN

R GAIN

G GAIN

B GAIN

R GAIN

G GAIN

B GAIN

CSM modo

EEPROM Read

EEPROM Write

No

1

2

3

4

5

6

CMD

(HEX)

F3

F4

16

18

1A

16

18

1A

16

18

1A

F2

E7

E8

ADR

00

00

00

01

02

00

00

00

VALUE

FF/00

00 - FE

00 - FE

00 - FE

00 - FE

00 - FE

00 - FE

00 - FE

00 - FE

00 - FE

00

01

02

00

data

Detail

OO : OFF

01  : ON

FF  : WB Ready

0x10 : TV

0x20 : AV1

0x21 : AV2

0x23 : AV3

0x40 : Component1

0x41 : Component2

0x60 : RGB PC

0x90 : HDMI1

0x91 : HDMI2

0x92 : HDMI3

GAIN Adjsutment

CSM COOL

GAIN Adjsutment

CSM MEDIUM

GAIN Adjsutment

CSM WARM

COOL

MEDIUM

WARM

EEPROM read

EEPROM write

Color Coordinate

x

y 

0.293±0.002

0.329±0.002

9,300K

6,500K

0.000

0.003

0.285±0.002

0.313±0.002

MEDIUM

WARM

Mode

Temp

uv