26LV2500-DA (CHASSIS:LT01T) - LG TV Service Manual (repair manual). Page 11

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(1) Check display and sound

- Check Input and Signal items. (cf. work instructions)

1) TV
2) AV (CVBS)
3) COMPONENT (480i)
4) RGB (PC : 1024 x 768 @ 60hz)
5) HDMI 
6) PC Audio In 
* Display and sound check is executed by remote control.

* Caution :Not to push the INSTOP KEY after completion

if the function inspection. 

· 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)

4.1.1. 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

4.1.2. 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 15minutes.

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

the back light on.

4.1.3. Auto adjustment Map (RS-232C)

RS-232C COMMAND 
[ CMD    ID    DATA ]     

Wb     00       00       White Balance Start 
Wb     00       ff        White Balance End    

** 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 “

G

” key at “7. White Balance”. 

# After You finish 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. And Mechanical Power Switch  must be set
“ON”.  

Cool 13,000k

ºK

X=0.269(±0.002)

All

Y=0.273(±0.002)

<Test Signal>

Medium 9,300k

ºK

X=0.285(±0.002)

Inner pattern

Y=0.293(±0.002)

(216gray,85IRE)

Warm

6,500k

ºK

X=0.313(±0.002)

Y=0.329(±0.002)

Cool 9,300k

ºK

X=0.285(±0.002)

Only 22LD350

Y=0.293(±0.002)

<Test Signal>

Medium 8,000k

ºK

X=0.295(±0.002)

Inner pattern

Y=0.305(±0.002)

(216gray,85IRE)

Warm

6,500k

ºK

X=0.313(±0.002)

Y=0.329(±0.002)

 

Full White Pattern

COLOR
ANALYZER
TYPE: CA-210

RS-232C Communication

CA-210

RS-232C COMMAND MIN

CENTER

MAX

[CMD ID DATA]

(DEFAULT)

Cool

Mid

Warm

Cool

Mid

Warm

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