DOWNLOAD LG 22LV2500-UA (CHASSIS:LA01T) Service Manual ↓ Size: 4.03 MB | Pages: 50 in PDF or view online for FREE

- 10 -

This spec. sheet applies to LA01T Chassis applied LCD TV all
models manufactured in TV factory. 

2.1   Because this is not a hot chassis, it is not necessary

to use an isolation transformer. However, the use of
isolation transformer will help protect test instrument.  

2.2   Adjustment must be done in the correct order.  
2.3  The adjustment must be performed in the

circumstance of  25±5°C of temperature and 65±10%
of relative humidity   

2.4   The input voltage of the receiver must keep

100~240V~, 50/60Hz.  

2.5 At first Worker must turn on the SET by using Power

Only key.  

2.5    The receiver must be operated for about 5 minutes

prior to the adjustment when module is in the
circumstance of over 15. 

In case of keeping module is in the circumstance of
0°C, it should be placed in the circumstance of above
15°C for 2 hours  

In case of keeping module is in the circumstance of
below -20°C, it should be placed in the circumstance
of above 15°C for  3 hours. 

• Caution 
When a still image is displayed for 20 minutes or longer
(especially where W/B scale is strong.  Digital pattern 13ch
and/or Cross hatch pattern 09ch), there can some
afterimage in the black level area. 

(1) Adjust 480i Comp1(ADC)
(2) EDID/DDC download  

• Remark 

- Above adjustment items can be also performed in Final

Assembly if needed. Adjustment items in both PCBA and
final assembly stages can be checked by using the
INSTART Menu  1.ADJUST CHECK. 

(1) White Balance adjustment 
(2) RS-232C functionality check 
(3) Factory Option setting per destination 
(4) Shipment mode setting (IN-STOP) 

(1) Ship-out mode  
(2) Service Option Default  
(3) USB Download(S/W Update, Option, Service only)  
(4) ISP Download (Optional) 

4.1.1. Overview 
• ADC adjustment is needed to find the optimum black level

and gain in Analog-to-Digital device and to compensate RGB
deviation. 

4.1.2. Equipment & Condition 
1) Jig (RS-232C protocol) 

• Required equipment : Adjustment R/C 

*Enter Service Mode by pushing “ADJ” key, 

G

” key at “6. ADC

Calibration” 

4.1.3. Adjustment 

4.1.3.1 Adjustment method  
• Using RS-232, adjust items listed in 3.1 in the other

shown in “4.1.3.3” 

4.1.3.2 Adj. protocol  

Ref.) ADC Adj. RS232C Protocol_Ver1.0 

4.1.3.3. Adj. order 
• aa 00 00  [Enter ADC adj. mode] 
• xb 00 40  [Change input source to Component1(1080i)] 
• ad 00 10  [Adjust 480i Comp1] 
• xb 00 60  [Change input source to RGB(1024*768)] 
• ad 00 10  [Adjust 1024*768 RGB] 
• ad 00 90  End adj. 

Ref) ADC adj. RS232C Protocol_Ver1.0 

Protocol

 Command 

Set ACK 

Enter adj. mode 

aa 00 00 

a 00 OK00x 

Source change 

xb 00 40 
xb 00 60  

b 00 OK40x (Adjust 480i /1080p Comp1 ) 
b 00 OK60x (Adjust 1920*1080 RGB) 

Begin adj. 

ad 00 10 

 

Return adj. result 

 

OKx (Case of Success) 
NGx (Case of Fail) 

Read adj. data 

(main) 
ad 00 20  
 
(sub ) 
ad 00 21 

(main) 
000000000000000000000000007c007b006dx 
 
(Sub) 
000000070000000000000000007c00830077x 

Confirm adj. 

ad 00 99 

NG 03 00x (Fai l)
NG 03 01x (Fai l)
NG 03 02x (Fai l)
OK 03 03x (Success) 

End adj. 

aa 00 90 

a 00 OK90x 

- 11 -

4.2.1 Overview   
• It is a VESA regulation. A PC or a MNT will display an

optimal resolution through information sharing without any
necessity of user input. It is a realization of “Plug and Play”.   

4.2.2 Equipment  
• Since embedded EDID data is used, EDID download JIG,

HDMI cable and D-sub cable are not need. 

• Adjust remocon. 

4.2.3 Download method   
1) Press Adj. key on the Adj. R/C, 
2) Select EDID D/L menu. 
3) By pressing Enter key, EDID download will begin 
4) If Download is successful, OK is display, but If Download is

failure, NG is displayed. 

5) If Download is failure, Re-try downloads.    

* Caution) When EDID Download, must remove RGB/HDMI

Cable. 

Block1  

# HDMI2-EDID (C/S : 03BC)  
Block0

Block1  

# HDMI3-EDID (C/S : 03AC)  
Block0 

Block1 

# RGB-EDID (C/S : 1C)  
Block0 

0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F

_______________________________________________________

0  |  00  FF  FF  FF  FF  FF  FF  00  1E  6D  01  00  01  01  01  01

10  |  01  15  01  03  80  10  09  78  0A  EE  91  A3  54  4C  99  26

20  |  0F  50  54  A1  08  00  81  80  61  40  45  40  31  40  01   01

30  |  01  01  01  01  01  01  02  3A  80  18  71  38  2D  40  58   2C

40  |  45  00  A0  5A  00  00  00  1E  01  1D  00  72  51  D0  1E  20

50  |  6E  28  55  00  A0  5A  00  00  00  1E  00  00  00  FD  00  39

60  |  3F  1F  52  10  00  0A  20  20  20  20  20  20  00  00  00   FC

70  |  00  4C  47  20  54  56  0A  20  20  20  20  20  20  20  01   03 

0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F

_______________________________________________________

0  |  02  03  1C  F1  47  10  22  20  05  84  03  02   23  09  07  07

10  |  67  03  0C  00  10  00  B8  2D  E3  05  03  01  02  3A  80  18

20  |  71  38  2D  40  58  2C  04  05  A0  5A  00  00  00  1E  01  1D

30  |  80  18  71  1C  16  20  58  2C  25  00  A0  5A  00  00  00  9E

40  |  01  1D  00  72  51  D0  1E  20  6E  28  55  00  A0  5A  00  00

50  |  00  1E  8C  0A  D0  8A  20  E0  2D 10  10  3E  96  00  A0  5A

60  |  00  00  00  18  26  36  80  A0  70  38  1F  40  30  20  25  00

70  |  A0  5A  00  00  00  1A  00  00  00  00  00  00  00  00  00  CC

0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F

______________________________________________________

0  |  00  FF  FF FF FF FF FF 00  1E  6D  01  00  01  01 01 01

10  |  01  15  01  03  80  10  09  78  0A  EE  91  A3  54  4C  99  26

20  |  0F  50  54  A1  08  00  81  80  61  40  45  40  31  40  01  01

30  |  01  01  01  01  01  01  02  3A  80  18  71  38  2D  40  58  2C

40  |  45  00  A0  5A  00  00  00  1E  01  1D  00  72  51  D0  1E  20

50  |  6E  28  55  00  A0  5A  00  00  00  1E  00  00  00  FD  00  39

60  |  3F  1F  52  10  00  0A  20  20  20  20  20  20  00  00  00  FC

70  |  00  4C  47  20  54  56  0A  20  20  20  20  20  20  20  01  03 

0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F

_______________________________________________________

0  |  02  03  1C  F1  47  10  22  20  05  84  03  02   23  09  07  07

10  |  67  03  0C  00  20  00  B8  2D  E3  05  03  01  02  3A  80  18

20  |  71  38  2D  40  58  2C  04  05  A0  5A  00  00  00  1E  01  1D

30  |  80  18  71  1C  16  20  58  2C  25  00  A0  5A  00  00  00  9E

40  |  01  1D  00  72  51  D0  1E  20  6E  28  55  00  A0  5A  00  00

50  |  00  1E  8C  0A  D0  8A  20  E0  2D 10  10  3E  96  00  A0 5A

60  |  00  00 00 18  26  36  80  A0  70  38  1F  40  30  20  25  00

70  |  A0  5A  00  00 00 1A  00  00 00 00 00 00 00 00 00 BC 

0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F

________________________________________________________

0  |  00  FF  FF FF FF FF FF 00  1E  6D  01  00  01  01 01 01

10  |  01  15  01  03  80  10  09  78  0A  EE  91  A3  54  4C  99  26

20  |  0F  50  54  A1  08  00  81  80  61  40  45  40  31  40  01  01

30  |  01  01  01  01  01  01  02  3A  80  18  71  38  2D  40  58  2C

40  |  45  00  A0  5A  00  00  00  1E  01  1D  00  72  51  D0  1E  20

50  |  6E  28  55  00  A0  5A  00  00  00  1E  00  00  00  FD  00  39

60  |  3F  1F  52  10  00  0A  20  20  20  20  20  20  00  00  00  FC

70  |  00  4C  47  20  54  56  0A  20  20  20  20  20  20  20  01  03

0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F

_______________________________________________________

0  |  02  03  1C  F1  47  10  22  20  05  84  03  02   23  09  07  07

10  |  67  03  0C  00  30  00  B8  2D  E3  05  03  01  02  3A  80  18

20  |  71  38  2D  40  58  2C  04  05  A0  5A  00  00  00  1E  01  1D

30  |  80  18  71  1C  16  20  58  2C  25  00  A0  5A  00  00  00  9E

40  |  01  1D  00  72  51  D0  1E  20  6E  28  55  00  A0  5A  00  00

50  |  00  1E  8C  0A  D0  8A  20  E0  2D 10  10  3E  96  00  A0  5A

60  |  00  00  00  18  26  36  80  A0  70  38  1F  40  30  20  25  00

70  |  A0  5A  00  00 00 1A  00  00 00 00 00 00 00 00 00 AC 

0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F

_______________________________________________________

0  |  00  FF  FF FF FF FF FF 00  1E  6D  01  00  01  01 01 01

10  |  01  15  01  03  68  10  09  78  0A  EE  91  A3  54  4C  99  26

20  |  0F  50  54  A1  08  00  81  80  61  40  45  40  31  40  01  01

30  |  01  01  01  01  01  01  02  3A  80  18  71  38  2D  40  58  2C

40  |  45  00  A0  5A  00  00  00  1E  01  1D  00  72  51  D0  1E  20
50  |  6E  28  55  00  A0  5A  00  00  00  1E  00  00  00  FD  00  3A

60  |  3E  1E  53  10  00  0A  20  20  20  20  20  20  00  00  00  FC

70  |  00  4C  47  20  54  56  0A  20  20  20  20  20  20  20  00  1C

- 12 -

5.1.1. Overview 
5.1.1.1. W/B adj. Objective & How-it-works 
(1) Objective: To reduce each Panel’s W/B deviation 
(2) 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.  

(3) Adj. condition: normal temperature 
1) Surrounding Temperature: 25±5°C 
2) Warm-up time: About 5 Min 
3) Surrounding Humidity: 20% ~ 80% 

5.1.2. Equipment 
(1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 / LED:

CH14) 

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

needed) 

(3) Adjust Remocon 
(4) Video Signal Generator MSPG-925F 720p/204-Gray

(Model: 217, Pattern: 49)  

• Color Analyzer Matrix should be calibrated using CS-1000 

5.1.3. Equipment connection 

5.1.4. Adjustment Command (Protocol)  
(1) RS-232C Command used during auto-adj. 

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(end)) -> Off-set adj. 

wb 00 ff   ->End white balance auto adj. 

(2) Adj. Map
Applied Model : 
32/37/42/47LK450-UB, 32/42/47LK450-NA, 32/42/47LK451-
NB, 32/42/47LK452-NC,32LK330-UB, 32/42LK430-UA,
42/47/55LK520-UA, 32LK330-NB, 42LK430-NA,
42/47/55LK530-NA  

5.1.5. Adjustment method 
5.1.5.1 Auto WB calibration 
1) Set TV in adj. mode using POWER ONLY (P-ONLY) 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 Sing), check adj. status pre

mode (Cool, Medium, Warm) 

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 

5.1.5.2 Manual adj. method 
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 10cm of the surface.. 

3) Press ADJ key -> EZ adjust using adj. R/C  6. White-

Balance then press the cursor to the right (KEY

G

). (When

KEY(

G

) is pressed 204 Gray(80IRE) internal pattern will be

displayed) 

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

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

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

color temperature. 

• 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 204 Gray pattern. 

Co lo r An alyzer

 

Co m p ut er

 

Pat t ern Gen erat o r

 

RS -232C 

RS -232C 

RS -232C 

Probe

Signal Source

* If TV internal pattern is used, not needed

Connection Diagram of Automatic Adjustment

RS-232C COMMAND 

[CMD       ID

            DATA] 

Explanation 

Wb 

00 

00 

Begin White Balance adj. 

Wb 

00 

ff 

End White Balance adj. (internal pattern disappears ) 

Adj.

item Command 

(lower case ASCII) 

Data Range 
(Hex.) 

Default 
(Decimal) 

 

 

CMD1 CMD2 MIN  MAX 

 

R Gain 

j 

g 

00 

C0 

172 

G Gain 

j 

h 

00 

i

00 

C0 172 

B Gain 

j

C0 

192 

R Cut 

 

64 

G 

Cut 

   

  64 

Cool 

B 

Cut 

   

  64 

Medium

j a 00 

C0 

192 

G Gain 

j 

b 

00 

C0 

192 

B Gain 

R Gain 

j c 00 

C0 

192 

R 

Cut 

   

  64 

G 

Cut 

   

  64 

B 

Cut 

   

  64 

R Gain 

j 

d 

00 

C0 

192 

G Gain 

j 

e 

00 

C0 

192 

B Gain 

j 

f 

00 

C0 

172 

R 

Cut 

   

  64 

G 

Cut 

   

  64 

Warm 

B 

Cut 

   

  64 

- 13 -

• Adj. 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 10cm 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. 

5.1.6 Reference (White Balance Adj. coordinate and color

temperature) 

(1) Luminance: 204 Gray, 80IRE 
(2) Standard color coordinate and temperature using CS-1000

(over 26 inch) 

• Standard color coordinate and temperature using CA-

210(CH 9) 

America due to rating 

• Applied model: LA01U Chassis applied None USA

model(CANADA, MEXICO) 

5.3.2 Method  
(1) Press ADJ key on the Adj. R/C, and then select Country

Group Menu 

(2) Depending on destination, select KR or US, then on the

lower Country option, select US, CA, MX.  Selection is
done using +, - KEY 

• Method: Press Adj. key on the Adj. R/C, then select Tool

option.  

• After final inspection, press In-Stop key of the Adj. R/C and

check that the unit goes to Stand-by mode. 

Mode

Color Coordination

Temp

∆

UV

x

y

COOL

0.269

0.273

13000K

0.0000

MEDIUM

0.285

0.293

9300K

0.0000

WARM

0.313

0.329

6500K

0.0000

Mode

Color Coordination

Temp

∆

UV

x

y

COOL

0.269±0.002

0.273±0.002

13000K

0.0000

MEDIUM

0.285±0.002

0.293±0.002

9300K

0.0000

WARM

0.313+0.002

0.329±0.002

6500K

0.0000

Model

Tool1

Tool2

Tool3

Tool4

Tool5

Menu

26LK330-UB 13896

18966

51209

2328

290

AUO