32LH255H (CHASSIS:LA96C) - LG TV Service Manual (repair manual). Page 15

6.1.5 Adj. method  
6.1.5.1 Auto adj. method 
1) Set TV in adj. mode using POWER On Key  
2) Zero calibrate probe then place it on the center of the

Display 

3) Connect Cable(RS-232C) 
4) Select mode in adj. Program and begin adj. 
5) When adj. is complete (OK Sign), check adj. status per

mode    (Warm, Medium, Cool) 

6) Remove probe and RS-232C cable to complete adj. 

• Adj. must begin w/ command “wb 00 00”, and end w/“wb 00

ff”and adj. offset if needed. 

6.1.5.2 Manual adj. method 
Dynamic contrast : off 
Dynamic color : off 
OPC : Off 
Energy saving mode : Off 

1) Set TV Picture Mode to Standard and in Advanced Control,

set Dynamic Contrast and Color ‘Off’. 

2) Set TV in adj. mode using POWER On Key 
3) Press ADJ key  -> EZ adjust using adj. R/C 
4) Using CH + / - KEY, select 10.TEST PATTERN then press

Enter to place in HEAT RUN mode and wait for 30 minutes. 

5) Zero calibrate the probe of Color Analyzer, then place it on

the center of LCD module within 10 cm of the surface. 

6) Press ADJ key  -> 7. White-Balance then press the cursor

to the right (KEY 

) 

(When 

is pressed Full White internal pattern will be

displayed) 

7) One of R Gain / G Gain / B Gain should be fixed at 192,

and the rest will be lowered to meet the desired value. 

8) Adj. is performed in COOL, MEDIUM, WARM 3 modes of

color temperature 

•If internal pattern is not available, use HDMI input.  In EZ Adj.
menu 7.White Balance, you can select one of 3 options:
None, Inner, HDMI.  Default is inner.   By selecting HDMI, you
can adjust using HDMI signal. 

• Adj. condition and cautionary items
1) Lighting condition in surrounding area 

Surrounding lighting should be lower than 10 lux.  Try to
isolate adj. area into dark surrounding. 

2) Probe location 
- LCD: Color Analyzer (CA-210) probe should be within 10cm

and perpendicular of the module surface (80°~ 100°) 

- In case of LCD, B/L on should be checked using no signal or
Full white Pattern 

6.1.6 Reference (White Balance adj. coordinate and color

temperature)  

6.1.6.1 Adjustment Preparation    
• 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) 

• 15 Pin D-Sub Jack is connected to the AUTO W/B

EQUIPMENT. 

• Adjust Process will start by execute I2C Command (Inner

pattern (0xF3, 0xFF)). 

∆

Manual White Balance adjust process using Service Remo-
con.   After enter Service Mode by pushing “ADJ” key,  enter
“White Balance” by pushing “•” key at “ 6. White Balance”.
(CA-210, CH-9) 

*Adjust “R/G/B - GAIN” by pushing “

”, “

” key at “Cool” 

*Adjust “R/G/B - GAIN” by pushing “

”, “

” key at “Medium” 

*Adjust “R/G/B - GAIN” by pushing “

”, “

” key at “Warm” 

- 15 -

Cool

11,000

K

X=0.276 ± 0.003 
Y=0.283 ± 0.003 

Medium 9,300

K

X=0.285 ± 0.003 
Y=0.293 ± 0.003 

Color 

Temperature 

Warm

6,500

K

X=0.313 ± 0.003 
Y=0.329 ± 0.003 

<Test Signal> 

Inner pattern 

 

(216gray, 85 IRE)