DOWNLOAD LG 50PA6500-SA (CHASSIS:PB21A) Service Manual ↓ Size: 11.26 MB | Pages: 48 in PDF or view online for FREE

- 6 -

->  PU21A/PB21A  :  USE  INTERNAL ADC(LM1)  :  using  internal 

pattern.

■ Summary :  Adjustment  component  480i/1080i  and  RGB 

1080p is Gain and Black level setting at Analog 

to  Digital  converter,  and  compensate  the  RGB 

deviation

■ Using instrument 

●  Adjustment  remocon,  801GF(802B,  802F,  802R)  or 

MSPG925FA pattern generator

  ( It  can  output  480i/1080i  horizontal  100%  color  bar 

pattern  signal,  and  its  output  level  must  setting 

0.7V±0.1V p-p correctly)

●  You  must  make  it  sure  its  resolution  and  pattern  cause 

every instrument can have different setting

●  Adjustment  method  480i  Comp1, Adjust  1080p  Comp1/

RGB (Factory adjustment)

● ADC 480i Component1 adjustment

- Check connection of Component1 

- MSPG-925FA -> Model: 209, Pattern 65

●  Set  Component  480i  mode  and  100%  Horizontal  Color 

Bar  Pattern(HozTV31Bar),  then  set  TV  set  to 

Component1 mode and its screen to “NORMAL” 

● ADC 1080p Component1 / RGB adjustment

- Check connection both of Component1 and RGB

- MSPG-925FA -> Model: 225, Pattern 65

●  Set Component 1080p mode and 100% Horizontal Color 

Bar  Pattern(HozTV31Bar),  then  set  TV  set  to 

Component1 mode and its screen to “NORMAL” 

●  After get each the signal, wait more a second and enter 

the  “IN-START”  with  press  IN-START  key  of  Service 

remocon.  After  then  select  “7.  External  ADC”  with 

navigator button and press “Enter”. 

●  After Then  Press  key  of  Service  remocon  “Right Arrow 

(VOL+)”

● You can see “ADC Component1 Success”

● Component1 1080p, RGB 1080p Adjust is same method.

●  Component  1080p Adjustment  in  Component1  input 

mode

● RGB 1080p adjustment in RGB input mode

●  If  you  success  RGB  1080p Adjust. You  can  see  “ADC 

RGB-DTV Success”

* caution : Set Volume 0 after adjustment

-  ADJ(EZ  ADJUST)  ->  6.ADC  Calibration  ->  ADC 

Calibration(START) 

*  EDID  (The  Extended  Display  Identification  Data)/DDC 

(Display Data Channel) Download.

■ Summary

●  It is established in VESA, for communication between 

PC  and  Monitor  without  order  from  user  for  building 

user  condition.  It  helps  to  make  easily  use  realize 

“Plug and Play” function. 

● For EDID data write, we use DDC2B protocol.

- Auto Download

■ After enter Service Mode by pushing “ADJ” key,

■ Enter EDID D/L mode.

■ Enter “START” by pushing “OK” key. 

Caution: 

-  Never  connect  HDMI  &  D-sub  Cable  when  the  user 

downloading .

- Use the proper cables below for EDID Writing

< Adjustment pattern : 480i / 1080p 60Hz Pattern >

- 7 -

(PU21A)

* Edid data and Model option download(RS232)

- Manual Download 

■ Write HDMI EDID data

● Using instruments

-  Jig.  (PC  Serial  to  D-Sub  connection)  for  PC,  DDC 

adjustment.

- S/W for DDC recording (EDID data write and read)

- D-sub jack

- Additional HDMI cable connection Jig.

● Preparing and setting.

-  Set instruments and Jig. Like pic.5), then turn on PC 

and Jig. 

- Operate DDC write S/W (EDID write & read)

- It will operate in the DOS mode.

■ EDID data (Model name = LG TV)

 - RGB FHD 

- South Centural America _2D_FHD HDMI  

NO

Enter  

download MODE

EDID data Model

option download

Item

download ‘Mode In’

download

CMD 1

A

A

CMD 2

A

E

Data 0

0

00

0

10

When transfer the  

‘Mode In’,

Carry the command.

Automatically download

(The use of a internal 

pattern)

< For write EDID data, setting Jig and another instruments >

00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 

01 16 01 03 68 A0 5A 78 0A EE 91 A3 54 4C 99 26 

0F 50 54 A1 08 00 31 40 45 40 61 40 81 80 D1 C0 

01 01 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20 

25 00 40 84 63 00 00 1A 66 21 50 B0 51 00 1B 30 

40 70 36 00 40 84 63 00 00 1E 00 00 00 FD 00 3A 

3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC 
00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 00 ED 

00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 

01 16 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26 

0F 50 54 A1 08 00 31 40 45 40 61 40 81 80 D1 C0 

01 01 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20 

25 00 40 84 63 00 00 1A 66 21 50 B0 51 00 1B 30 

40 70 36 00 40 84 63 00 00 1E 00 00 00 FD 00 3A 

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

00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 D4 

02 03 27 F1 4F 90 1F 04 13 05 14 03 02 12 20 22 
15 11 16 01 26 15 07 50 09 57 07 67 03 0C 00 10 
00 B8 2D E3 05 03 01 02 3A 80 18 71 38 2D 40 58 
2C 45 00 40 84 63 00 00 1E 01 1D 80 18 71 1C 16 
20 58 2C 25 00 40 84 63 00 00 9E 01 1D 00 72 51 
D0 1E 20 6E 28 55 00 40 84 63 00 00 1E 0E 1F 00 
80 51 00 1E 30 40 80 37 00 40 84 63 00 00 1C 00 
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 4B 

- 8 -

- South Centural America _2D_FHD HDMI 2

- South Centural America _2D_FHD HDMI 3

-  See Working Guide if you want more information about EDID 

communication.

- Adjustment Color Temperature(White balance)

■ Using Instruments

● Color Analyzer: CA-210 (CH 10)

-  Using LCD color temperature, Color Analyzer (CA-

210) must use CH 10, which Matrix compensated 

(White, Red, Green, Blue compensation) with CS-

2100. See the Coordination bellowed one. 

●  Auto-adjustment Equipment (It needs when Auto-adjust-

ment – It is availed communicate with RS-232C : Baud 

rate: 115200) 

●  Video Signal Generator MSPG-925F 720p, 216Gray 

(Model: 217, Pattern 78)

■ Connection Diagram (Auto Adjustment)

● Using Inner Pattern

● Using HDMI input

■ White Balance Adjustment 

If you can’t adjust with inner pattern, then you can adjust 

it using HDMI pattern. You can select option at “Ez-Adjust 

Menu – 7. White Balance” there items “NONE, INNER, 

HDMI”. It is normally setting at inner basically. If you can’t 

adjust using inner pattern you can select HDMI item, and 

you can adjust.

In manual Adjust case, if you press ADJ button of service 

remocon, and enter “Ez-Adjust Menu – 7. White Balance”, 

then automatically inner pattern operates. (In case of 

“Inner” originally “Test-Pattern. On” will be selected in The 

“Test-Pattern. On/Off”. 

● Connect all cables and equipments like Pic.5)

●  Set Baud Rate of RS-232C to 115200. It may set 115200 

orignally.

● Connect RS-232C cable to set

● Connect HDMI cable to set

< connection Diagram for Adjustment White balance >

00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 

01 16 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26 

0F 50 54 A1 08 00 31 40 45 40 61 40 81 80 D1 C0 

01 01 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20 

25 00 40 84 63 00 00 1A 66 21 50 B0 51 00 1B 30 

40 70 36 00 40 84 63 00 00 1E 00 00 00 FD 00 3A 

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

00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 D4 

02 03 27 F1 4F 90 1F 04 13 05 14 03 02 12 20 22 
15 11 16 01 26 15 07 50 09 57 07 67 03 0C 00 20 
00 B8 2D E3 05 03 01 02 3A 80 18 71 38 2D 40 58 
2C 45 00 40 84 63 00 00 1E 01 1D 80 18 71 1C 16 
20 58 2C 25 00 40 84 63 00 00 9E 01 1D 00 72 51 
D0 1E 20 6E 28 55 00 40 84 63 00 00 1E 0E 1F 00 
80 51 00 1E 30 40 80 37 00 40 84 63 00 00 1C 00 
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3B 

00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 

01 16 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26 

0F 50 54 A1 08 00 31 40 45 40 61 40 81 80 D1 C0 

01 01 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20 

25 00 40 84 63 00 00 1A 66 21 50 B0 51 00 1B 30 

40 70 36 00 40 84 63 00 00 1E 00 00 00 FD 00 3A 

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

00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 D4 

02 03 27 F1 4F 90 1F 04 13 05 14 03 02 12 20 22 
15 11 16 01 26 15 07 50 09 57 07 67 03 0C 00 30 
00 B8 2D E3 05 03 01 02 3A 80 18 71 38 2D 40 58 
2C 45 00 40 84 63 00 00 1E 01 1D 80 18 71 1C 16 
20 58 2C 25 00 40 84 63 00 00 9E 01 1D 00 72 51 
D0 1E 20 6E 28 55 00 40 84 63 00 00 1E 0E 1F 00 
80 51 00 1E 30 40 80 37 00 40 84 63 00 00 1C 00 
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 2B 

- 9 -

■ RS-232C Command (Commonly apply)

● “wb 00 00”: Start Auto-adjustment of white balance.

● “wb 00 10”: Start Gain Adjustment (Inner pattern) 

● “jb 00 c0” : 

● …

● “wb 00 1f”: End of Adjustment

*  If it needs, offset adjustment (wb 00 20-start, wb 00 2f-

end)

●  “wb 00 ff”: End of white balance adjustment (inner pattern 

disappear)

■ Adjustment Mapping information

●  When Color temperature (White balance) Adjustment 

(Automatically)

-  Press “Power only key” of service remocon and operate 

automatically adjustment.

- Set BaudRate to 115200.

● You must start “wb 00 00” and finish it “wb 00 ff”.

● If it needs, then adjustment “Offset”.

■ White Balance Adjustment (Manual adjustment)

● Test Equipment: CA-210

-  Using PDP color temperature, Color Analyzer (CA-210) 

must use CH 10, which Matrix compensated (White, Red, 

Green, Blue compensation) with CS-2100. See the 

Coordination bellowed one. 

● Manual adjustment sequence is like bellowed one.

-  Turn to “Ez-Adjust” mode with press ADJ button of service 

remocon.

-  Select “10.Test Pattern” with CH+/- button and press 

enter. Then set will go on Heat-run mode. Over 30 

minutes set let on Heat-run mode.

-  Let CA-210 to zero calibration and must has gap more 

10cm from center of PDP module when adjustment. 

-  Press “ADJ” button of service remocon and select 

“7.White-Balance” in “Ez-Adjust” then press “►” button of 

navigation key. (When press “►” button then set will go to 

full white mode)

- Adjust at three mode (Cool, Medium, Warm)

- If “cool” mode 

   Let B-Gain to 192 and R, G, B-Cut to 64 and then control 

R, G gain adjustment High Light adjustment.

-  If “Medium” and “Warm” mode Let R-Gain to 192 and R, 

G, B-Cut to 64 and then control G, B gain adjustment 

High Light adjustment.

- All of the three mode 

   Let R-Gain to 192 and R, G, B-Cut to 64 and then control 

G, B gain adjustment High Light adjustment.

- With volume button (+/-) you can adjust.

-  After all adjustment finished, with Enter (■ key) turn to 

Ez-Adjust mode. Then with ADJ button, exit from 

adjustment mode

Attachment:  White Balance adjustment coordination and color 

temperature.

● Using CS-1000 Equipment. 

- COOL : T=11000K, ∆uv=0.000, x=0.276 y=0.283 

- MEDIUM  : T=9300K, ∆uv=0.000, x=0.285 y=0.293 

- WARM  : T=6500K, ∆uv=0.000, x=0.313 y=0.329 

●  When tester will measure on Cool condition, adjust W30 on 

TV display menu.

●  When tester will measure on medium condition, adjust 0 on 

TV display menu.

RS-232C 

COMMAND

[CMD ID DATA]

M

I

N

CENTER

(DEFAULT)

M

A

X

Cool Mid Warm

Cool Mid Warm

R Gain

jg

Ja

jd

00

184 192

192

192

G Gain

jh

Jb

je

00

187 183

159

192

B Gain

ji

Jc

jf

00

192 161

95

192

R Cut

64

64

64

127

G Cut

64

64

64

127

B Cut

64

64

64

127

RS-232C COMMAND

[CMD           ID        DATA]

Meaning

wb

00

00

White Balance adjustment start.

wb

00

10

Start of adjust gain
(Inner white pattern)

wb

00

1f

End of gain adjust

wb

00

20

Start of offset adjust
(Inner white pattern)

wb

00

2f

End of offset adjust

wb

00

ff

End of White Balance adjust
(Inner pattern disappeared)