26LU50FD-AC (CHASSIS:LB91A) - LG TV Service Manual (repair manual). Page 11

• W/B Equipment condition

CA210 : CH 9, Test signal : Inner pattern (85IRE)

• Above 5 minutes H/run in the inner pattern. (“Power on” key

of adjust remote control)

- Connecting picture of the measuring instrument 

(On Automatic control )
Inside PATTERN is used when W/B is controlled. Connect to
auto controller or push Adjustment R/C POWER-ON ->
Enter the mode of White-Balance, the pattern will come out.

4.1.1. Auto-control interface and directions

1) Adjust in the place where the influx of light like floodlight

around is blocked. (illumination is less than 10ux).

2) Adhere closely the Color Analyzer (CA210) to the module

less than 10cm distance, keep it with the surface of the
Module and Color Analyzer’s Prove vertically.(80~100°).

3) Aging time

- After aging start, keep the power on (no suspension of

power supply) and heat-run over 15 minutes.

- Using ‘no signal’ or ‘full white pattern’ or the others, check

the back light on.

• Auto adjustment Map(RS-232C)

* Caution

Color Temperature : COOL, Medium, Warm.
One of R Gain/G Gain/ B Gain should be kept on 0xC0, and
adjust other two lower than C0.
(when R/G/B Gain are all C0, it is the FULL Dynamic Range
of Module)

* Manual W/B process using adjusts Remote control.

• After enter Service Mode by pushing “ADJ” key,
• Enter White Balance by pushing “•” key at “3. White Balance”.

* After done all adjustments, Press “In-start” button and compare

Tool option and Area option value with its BOM, if it is correctly
same then unplug the AC cable.
If it is not same, then correct it same with BOM and unplug AC
cable.
For correct it to the model’s module from factory JIG model.

* Push the “IN STOP” key after completing the function inspection.

• Connect D-sub Signal Cable to D-Sub Jack.
• Write EDID DATA to EEPROM (24C02) by using DDC2B

protocol.

• Check whether written EDID data is correct or not.
* For SVC main Ass’y, EDID have to be downloaded to Insert

Process in advance.

• Connect HDMI Signal Cable to HDMI Jack.
• Write EDID DATA to EEPROM(24C02) by using DDC2B

protocol.

• Check whether written EDID data is correct or not.
* For SVC main Ass’y, EDID have to be downloaded to Insert

Process in advance.

1) All Data : HEXA Value
2) Changeable Data :
*: Serial No : Controlled / Data:01
**: Month : Controlled / Data:00
***:Year : Controlled
****:Check sum

- 12 -

 Min 

Typ 

Max  

Color 

Coordinate 

Test Signal 

Cool 8300 

9,300k 

10300

ºK 

X=0.285 

(±0.002) 

Y=0.293 

(±0.002) 

Medium  7000 

8,000k 

9000 ºK 

X=0.295 

(±0.002) 

Y=0.305 

(±0.002) 

Warm 5500 

6,500k 

7500 ºK 

X=0.313 

(±0.002) 

Y=0.329 

(±0.002) 

<Test Signal> 

Inner pattern 

 

(216gray,85IRE)

 

C O L O R
A N A LY Z E R
T Y P E :   C A - 1 0 0

Full White Pattern

RS 232C

Color Analyzer

White Balance

Color Temp.

R-Gain

G-Gain

B-Gain

R-Cut

G-Cut

B-Cut

Test-Pattern.

Reset

Cool

172

172

192

64

64

64

ON

To set

RS-232C COMMAND

CENTER

[CMD ID DATA]

(DEFAULT)

Cool Mid

Warm MIN Cool

Mid

Warm MAX

R Gain

jg 

Ja 

jd

00

172

192

192

255

G Gain

jh 

Jb

je

00

172

192

192

255

B Gain

ji 

Jc 

jf

00

192

192

172

255

R Cut 

64

64

64

128

G Cut 

64

64

64

128

B Cut 

64

64

64

128