DOWNLOAD LG 50PJ250-SA (CHASSIS:PB02A) Service Manual ↓ Size: 13.14 MB | Pages: 70 in PDF or view online for FREE

-> PB02A : USE INTERNAL ADC(S7) : using internal pattern.

(1) Summary : Adjustment  component  480i/1080i  and  RGB

1080p is Gain and Black level setting at Analog
to  Digital  converter,  and  compensate  the  RGB
deviation

(2) Using instrument 

1) 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 
0.7 V ± 0.1 V p-p correctly)

* You  must  make  it  sure  its  resolution  and  pattern  cause  every

instrument can have different setting

2) Adjustment  method  480i  Comp1,  Adjust  1080p

Comp1/RGB (Factory adjustment)

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ADC 480i Component1 adjustment -

- Check connection of Component1 
- MSPG-925FA Ë Model: 209, Pattern 65

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Set  Component  480i  mode  and  100%  Horizontal
Color  Bar  Pattern(HozTV31Bar),  then  set  TV  set  to
Component1 mode and its screen to “NORMAL” 

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ADC 1080p Component1 / RGB adjustment

- Check connection both of Component1 and RGB
- MSPG-925FA Ë Model: 225, Pattern 65

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Set  Component  1080p  mode  and  100%  Horizontal
Color  Bar  Pattern(HozTV31Bar),  then  set  TV  set  to
Component1 mode and its screen to “NORMAL” 

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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”. 

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After  Then  Press  key  of  Service  remocon  “Right
Arrow(VOL+)”

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You can see “ADC Component1 Success”

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

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Component  1080p  Adjustment  in  Component1  input
mode

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RGB 1080p adjustment in RGB input mode

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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) 

(1) Summary

1) 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. 

2) For EDID data write, we use DDC2B protocol.

(1) After enter Service Mode by pushing “ADJ” key,
(2) Enter EDID D/L mode.
(3) 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.

- 9 -

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

* Edid data and Model option download(RS232)

(1) Write HDMI EDID data

1) 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.

2) 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)
- 2010 EDID DATA CHECK SUM.

- 10 -

BLOCK(0)         BLOCK(1)

HD

HDMI1

3B

2C

HDMI2

3B

1C

HDMI3

3B

0C

RGB

A3

25

FHD

HDMI1

3B

2C

HDMI2

3B

1C

HDMI3

3B

0C

HDMI4

3B

FC

RGB

A3

25

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

* See  Working  Guide  if  you  want  more  information  about  EDID

communication.

(1) Using Instruments

1) Color Analyzer: CA-210 (CH 9)

- Using  LCD  color  temperature,  Color  Analyzer  (CA-

210)  must  use  CH  9,  which  Matrix  compensated
(White,  Red,  Green,  Blue  compensation)  with  CS-
2100. See the Coordination bellowed one. 

2) Auto-adjustment  Equipment  (It  needs  when  Auto-

adjustment  –  It  is  availed  communicate  with  RS-232C  :
Baud rate: 115200) 

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

(Model: 217, Pattern 78)

(2) Connection Diagram (Auto Adjustment)

1) Using Inner Pattern

2) Using HDMI input

(3) 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”. 

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Connect all cables and equipments like Pic.5)

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

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Connect RS-232C cable to set

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Connect HDMI cable to set

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RS-232C COMMAND(Commonly apply)

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

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

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“jb 00 c0” : 

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…

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“wb 00 1f”: End of Adjustment

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

end)

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

- 11 -

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

1fEnd 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)

< Connection Diagram for Adjustment White balance >

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Adjustment Mapping information

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When  Color  temperature  (White  balance)  Adjustment
(Automatically)

- Press  “Power  only  key”  of  service  remocon  and

operate automatically adjustment.

- Set BaudRate to 115200.

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

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If it needs, then adjustment “Offset”.

(4) White Balance Adjustment (Manual adjustment)

1)  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. 

2) 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 “

G

” button

of navigation key. (When press “

G

” 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.

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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 

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Using CA-210 Equipment. (10 CH)

- Contras value : 216 Gray

- Brighness spec.

- Press In-Start button of Service Remocon then set the “4.Baud

Rate” to 115200. Then check RS-232C control and 

model  (Not  allowed  Korean  model).  It  is  selection  of  Country
about Rating and Time Zone.

(1) Models: All  models  which  PB82C  Chassis  (See  the  first

page.) 

(2) Press “In-Start” button of Service Remocon, then enter the

“Option” Menu with “PIP CH-“ Button 

(3) Select  one  of  these  three  (USA,  CANADA,  MEXICO)

defends on its market using “Vol. +/-“button.

Caution : Don’t  push  The  INSTOP  KEY  after  completing  the

function inspection

Caution : Inspection only PAL M

- 12 -

Color 

Test 

Color Coordination

temperature

Equipment

x

y

COOL

CA-210

0.276

±0.002

0.283

±0.002

MEDIUM

CA-210

0.285

±0.002

0.293

±0.002

WARM

CA-210

0.313

±0.002

0.329

±0.002

Item

Min

Typ Max Unit Remark

White  

49

60

-

cd/m - 100%Window White 

average

Pattern

brightness

- 100IRE(255Gray)

- Picture: Vivid(Medium )

Brightness 

-20

+20

%

- 85IRE(216Gray) 100% 

uniformity

Window White Pattern

- Picture: Vivid(Medium)

RS-232C COMMAND

CENTER

[CMD ID DATA]

MIN

(DEFAULT)

MAX

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

jf00

192

161

95

192

R Cut

64

64

64

127

G Cut

64

64

64

127

B Cut

64

64

64

127