47LB5DF (CHASSIS:LA75A) - LG TV Service Manual (repair manual). Page 14

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Summary : Adjustment component 480i/1080i and RGB

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

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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

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Adjustment method 480i Comp1, Adjust 1080p Comp1/RGB
(Factory adjustment)

1) 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"

- After get the signal, wait more a second and enter the

"Ez-Adjust" with press ADJ key of Service remocon.
After then select "3.ADC 480i Comp1" with navigator
button and press "Enter". It is automatically adjustment

- You can see "ADC Component1 Success" message

after Adjustment success

- Error Messages: When its adjustment is not correct,

"ADC Component1 480i Fail" message displayed. If
component is not connection "Component1 Not
Connected", its format is not 480i then "Not Valid
Format", its signal don’t out then "Check Signal Status"
message displayed. These messages will be displayed
just a second.

2) ADC 1080p Component1 / RGB adjustment

: Check connection both of Component1 and RGB
: MSPG-925FA Ë 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 the signal, wait more a second and enter the

"Ez-Adjust" with press ADJ key of Service remocon.
After then select "4.ADC 1080p Comp1/RGB" with
navigator button and press "Enter". First, it is
automatically adjustment Component1.

- If adjustment is correctly finished, "ADC Component1

Success" message will be displayed. But adjustment is
not correctly finished, "ADC Component1 1080p Fail"
message will be displayed.

- After adjustment Component1 mode, move to RGB-DTV

mode automatically and RGB adjustment start. After
RGB Adjustment successfully finished, "ADC RGB
1080P Success" message will be displayed.

- If Adjustment doesn’t success, check conditions all of

the adjustment condition and adjustment again. See
"Error Messages" sentence. 

- After adjustment finished, press "ADJ" key and exit from

Adjustment mode.

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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. 

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Write HDMI EDID data 

- Using instruments

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

adjustment.

(2) S/W for DDC recording (EDID data write and read)
(3) D-sub jack
(4) Additional HDMI cable connection Jig.

- Preparing and setting.

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

Jig. 

(2) Operate DDC write S/W (EDID write & read)
(3) It will operate in the DOS mode.

- 14 -

(Adjustment pattern : 480i / 1080P 60Hz Pattern)

LCD TV SET

(or Digital Board)

Device configuration diagram for HDMI EDID Data input