42PJ350-SA (CHASSIS:PB02A) - LG TV Service Manual (repair manual). Page 9

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5. Factory Adjustment
-> PB02A : USE INTERNAL ADC(S7) : using internal pattern.
5-1. Auto Adjust Component 
480i/1080p RGB 1080p
(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)
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) 
5-3. EDID(The Extended Display
Identification Data) / DDC(Display Data
Channel) download
(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.
5-4. Auto Download
(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 >
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