DOWNLOAD LG 47LW9800-CA (CHASSIS:LC12D) Service Manual ↓ Size: 10.7 MB | Pages: 58 in PDF or view online for FREE

 

 

 

 

 

 

 

 
5.1.1 Overview 
ADC adjustment is needed to find the optimum black level and gain in Analog-to-Digital device 
and to compensate RGB deviation. 
 

 

                                                   

    LG Electronics

 

5.1.2 Equipment & Condition 
1) Adjust Remocon 
2) 801GF(802B, 802F, 802R) or MSPG925FA Pattern Generator 
   - Resolution: 480i, 720*480

 MSPG-925FA Î Model: 209, Pattern: 65) - 480i

 

1080p, 1920*1080

 (MSPG-925FA Î Model: 225, Pattern: 65) - 1080p   

      - Pattern : Horizontal 100% Color Bar Pattern 
      - Pattern level: 0.7±0.1 Vp-p 
   - Image 

 

3)    Must use standard cable 
 

 
5.1.3 Adjust method 
 
5.1.3.1 ADC 480i, 1080p Comp1 
1) Check connected condition of Comp1 cable to the equipment 
2) Give a 480i, 1080p Mode, Horizontal 100% Color Bar Pattern to Comp1. 

   

(MSPG-925FA Î Model: 209, Pattern: 65) - 480i 
(MSPG-925FA Î Model: 225, Pattern: 65) - 1080p   

3) Change input mode as Component1 and picture mode as “Standard” 
4) Press the In-start Key on the ADJ remote after at least 1 min of signal reception. Then, 

select 7. External ADC -> 1. COMP 1080p on the menu. Press enter key. The adjustment will 
start automatically. 

- 17 -

5) If ADC calibration is successful, “ADC RGB Success” is displayed. 

If ADC calibration is failure, “ADC RGB Fail” is displayed. 

6) If ADC calibration is failure, after recheck ADC pattern or condition retry calibration 
Error message refer to 
 
5.1.3.2 ADC 1920*1080 RGB 
1) Check connected condition of Component & RGB cable to the equipment 

2) Give a 1920*1080 Mode, 100% Horizontal Color Bar Pattern to RGB port. 

     

(MSPG-925 Series Î 

model:225

 , pattern:65 )

 

 

3) Change input mode as RGB and picture mode as “Standard” 
4) Press the In-start Key on the ADJ remote after at least 1 min of signal reception. Then, 

select 7. External ADC -> 1. COMP 1080p on the menu. Press enter key. The adjustment will 
start automatically. 

5) If ADC calibration is successful, “ADC RGB Success” is displayed. 

If ADC calibration is failure, “ADC RGB Fail” is displayed. 

6) If ADC calibration is failure, after recheck ADC pattern or condition retry calibration 

Error message refer to 5) 

  

 
5.3.1 Overview 
▪ W/B adj. Objective & How-it-works 

- Objective: To reduce each Panel’s W/B deviation 
- How-it-works: When R/G/B gain in the OSD is at 192, it means the panel is at its Full 

Dynamic Range. In order to prevent saturation of Full Dynamic range and data, 
one of R/G/B is fixed at 192, and the other two is lowered to find the desired 
value.  

-Adj. condition : normal temperature 

 

1) Surrounding Temperature: 25±5℃ 

 

2) Warm-up time: About 5 Min 

 

3) Surrounding Humidity: 20% ~ 80% 

 

 
5.3.2 Equipment 
1) Color Analyzer: CA-210 (

LED Module : CH 14

) 

2) Adj. Computer(During auto adj., RS-232C protocol is needed) 

- 18 -

3) Adjust Remocon 
4) Video Signal Generator MSPG-925F 720p/216-Gray(Model:217, Pattern:78) 
      → Only when internal pattern is not available 
 
▪

Color Analyzer Matrix should be calibrated using CS-1000

 

 
5.3.3 Equipment connection MAP 

5.3.4 Adj. Command (Protocol) 
<Command Format> 
START    6E    A    50    A    LEN    A    03    A    CMD    A    00    A    VAL    A    CS    A STOP 

 
- LEN: Number of Data Byte to be sent 

   - CMD: Command 
      - VAL: FOS Data value 
      - CS: Checksum of sent data 
   - A: Acknowledge 
      Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX] 
 
▪RS-232C Command used during auto-adj. 

RS-232C COMMAND 
[CMD      ID            DATA] 

Explanation 

wb 

00 

00 

Begin White Balance adj. 

wb 

00 

10 

Gain adj.(internal white pattern) 

wb 

00 

1f 

Gain adj. completed 

Color Analyzer 

Computer 

RS-

232C 

Pattern Generator 

RS-

232C 

Probe 

※

※If TV internal pattern is used, not 

- 19 -

wb 

00 

20 

Offset adj.(internal white pattern) 

wb 

00 

2f 

Offset adj. completed 

wb 

00 

ff 

End White Balance adj. 
(internal pattern disappears ) 

     
Ex) wb 00 00   ->  Begin white balance auto-adj. 
            wb 00 10      ->    Gain adj. 
            ja 00 ff      ->    Adj. data 
            jb 00 c0 
      ... 
      ... 

wb 00 1f      -> Gain adj. complete 

*(wb 00 20(start), wb 00 2f(endc)) -> Off-set adj. 

wb 00 ff      ->End white balance auto adj. 

 
▪Adj. Map 

Applied Model : LD03R Chassis ALL MODELS 

 Adj. 

item 

Command 
(lower caseASCII) 

Data Range 
(Hex.) 

Default 
(Decimal) 

Details 

 

 

CMD1 CMD2 MIN MAX 

 

 

R Gain 

j 

g 

00 

C0 

TBD 

 

G Gain 

j 

h 

00 

C0 

TBD 

 

B Gain 

j 

i 

00 

C0 

TBD 

 

R 

Cut 

   

 

TBD   

G 

Cut 

   

 

TBD   

Cool 

B 

Cut    

 

TBD   

R Gain 

j 

a 

00 

C0 

TBD 

 

G Gain 

j 

b 

00 

C0 

TBD 

 

B Gain 

j 

c 

00 

C0 

TBD 

 

R 

Cut 

   

 

TBD   

G 

Cut 

   

 

TBD   

Medium 

B 

Cut    

 

TBD   

R Gain 

j 

d 

00 

C0 

TBD 

 

Warm 

G Gain 

j 

e 

00 

C0 

TBD 

 

- 20 -

- 13 -