LG Electronics 55LA970V/W/9-ZA service manual Adj. method

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4.2.6. Adj. method

(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 to USB)

4)Select mode in adj. Program and begin adj.

5)When adj. is complete (OK Sign), check adj. status pre mode. (Warm, Medium, Cool)

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

W/B Adj. must begin as start command “wb 00 00” , and finish as end command “wb 00 ff”, and Adj. offset if need.

(2)Manual adjustment method (LA965x)

1)Set TV in Adj. mode using POWER ON.

2)Zero Calibrate the probe of Color Analyzer, then place it on the center of LCD module within 10 cm of the surface.

3)Press ADJ key → EZ adjust using adj. R/C → 9. White- Balance then press the cursor to the right(key ►). When right key(►) is pressed 216 Gray internal pattern will be displayed

4)Adjust Cool modes

a.Fix the one of R/G/B gain to 192 (default data) and decrease the others. (If G gain is adjusted over 172 and R and B gain less than 192 , Adjust is O.K.)

b.If G gain is less than 172, Increase G gain by up to 172, and then increase R gain and G gain same amount of increasing G gain.

c.If R gain or B gain is over 255, Readjust G gain less than 172, Conform to R gain is 255 or B gain is 255

5)Adjust two modes(Medium/Warm) Fix the one of R/G/B gain to 192(default data) and decrease the others.

6)Adjustment is completed, Exit adjust mode using “EXIT”

key on Remote control.

If internal pattern is not available, use RF input. In EZ Adj. menu 6.White Balance, you can select one of 2 Test- pattern: ON, OFF. Default is inner(ON). By selecting OFF, you can adjust using RF signal in 206 Gray pattern.

*CASE Cool

First adjust the coordinate far away from the target value(x, y).

1.x, y > target

i)Decrease the R, G.

2.x, y < target

i)First decrease the B gain,

3.x > target, y < target

i)First decrease B, so make y a little more than the target.

ii)Adjust x value by decreasing the R

4.x < target, y > target

i)First decrease B, so make x a little more than the target.

ii)Adjust x value by decreasing the G

How to adjust

1.If G gain is adjusted over 172 and R gain and B gain less than 192 , Adjust is O.K.

2.If G gain is less than 172 , increase G gain by up to 172, and then increase R gain and B gain same amount of increasing G gain.

3.If R gain or B gain is over 255 , Readjust G gain less than 172, Conform to R gain is 255 or B gain is 255

* CASE Medium / Warm

First adjust the coordinate far away from the target value(x, y).

1.x, y > target

i)Decrease the R, G.

2.x, y < target

i)First decrease the B gain,

ii)Decrease the one of the others.

3.x > target, y < target

i)First decrease B, so make y a little more than the target.

ii)Adjust x value by decreasing the R

4.x < target, y > target

i)First decrease B, so make x a little more than the target.

ii)Adjust y value by decreasing the G

Adjustment condition and cautionary items 1) Lighting condition in surrounding area

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

2)Probe location

:Color Analyzer(CA-210) probe should be within 10 cm and perpendicular of the module surface (80° ~ 100°)

3)Aging time

- After Aging Start, Keep the Power ON status during 5 Minutes.

- In case of LCD, Back-light on should be checked using no signal or Full-white pattern.

4.2.7.Reference (White balance Adj. coordinate and

color temperature)

Luminance : 216 Gray

Standard color coordinate and temperature using CS-1000 (over 26 inch)

Mode

Coordinate

Temp

∆uv

x

y

 

 

 

Cool

0.271

0.270

13000 K

0.0000

Medium

0.285

0.293

9300 K

0.0000

Warm

0.310

0.325

6500 K

0.0000

▪ Standard color coordinate and temperature using CA-210(CH 18)

Mode

Coordinate

Temp

∆uv

x

y

 

 

 

Cool

0.271 ± 0.002

0.270 ± 0.002

13000 K

0.0000

Medium

0.285 ± 0.002

0.293 ± 0.002

9300 K

0.0000

Warm

0.310 ± 0.002

0.325 ± 0.002

6500 K

0.0000

 

 

 

 

 

Copyright ©

LG Electronics. Inc. All rights reserved.

- 18 -

LGE Internal Use Only

Only for training and service purposes

 

 

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Contents LED TV Contents Safety Precautions General GuidanceServicing Precautions Electrostatically Sensitive ES DevicesIC Remove/Replacement Application range SpecificationModel General Specification Requirement for TestDVB-T PAL-BG/DK/I/I’VHF, UHF QpskExternal input format ModeSD ATVCVBS/SCART HD DTVSD DTV Sdtv 576PVIC Hdtv 768P Iii ADC Adjustment Adjustment InstructionAutomatic Adjustment DesignationLAN Inspection Model name & Serial number Download CI+ Key checking methodDownload method Manual AdjustmentEquipment Edid DataAdj. condition and cautionary items White Balance AdjustmentAdj. Command Protocol Equipment connection MAPReference White balance Adj. coordinate Color temperature Adj. methodFunction test Magic Motion Remote control testLocal Dimming Function Check Edge LED White balance tableInspection of light scattering Wi-Fi TestLNB voltage and 22KHz tone check Option selection per countryHdmi ARC Function Inspection Ship-out mode checkIn-stopAudio Tool Option selectionUSB S/W DownloadService only After downloading, have to adjust Tool Option againImportant Safety Notice Exploded View