DOWNLOAD LG 47LB7DF (CHASSIS:LJ81A) Service Manual ↓ Size: 4.06 MB | Pages: 41 in PDF or view online for FREE

Model
47LB7DF (CHASSIS:LJ81A)
Pages
41
Size
4.06 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
47lb7df-chassis-lj81a.pdf
Date

LG 47LB7DF (CHASSIS:LJ81A) Service Manual ▷ View online

- 13 -
- 14 -
- 15 -
3.4 Using RS-232C 
Adjust 3 items at 3. PCB assembly adjustments "4.1.3
sequence" one after the order
O Adjustment protocol
See ADC Adjustment RS232C Protocol_Ver1.0
O Necessary items before Adjustment items
- Pattern Generator : (MSPG-925FA)
- Adjust 480i Comp1 (MSPG-925FA : model :209 ,
pattern : 65)
- Adjust 1080p Comp1/RGB(MSPG-925FA:model : 225 ,
pattern : 65)
* If you want more information then see the below Adjustment
method (Factory Adjustment)
O Adjustment sequence
- ad 00 00 : Enter the ADC Adjustment mode.
- kb 00 04 : Change the mode to Component1 (No
actions)
- ad 00 10: Adjust 480i Comp1(Change the mode and
adjustment action)
- kb 00 06: Change to RGB-DTV mode(No action)
- ad 00 10: Adjust 1080p Comp1/RGB(Change the mode
and adjustment action)
- ad 00 90: End of the adjustment
4. Factory Adjustment
4.1 Auto Adjust Component 480i/1080p RGB 1080p 
O Summary : Adjustment component 480i/1080i and RGB
1080p is Gain and Black level setting at
Analog to Digital converter, and compensate
the RGB deviation
O 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)
<Pic.4 Adjustment pattern : 480i / 1080p 60Hz Pattern >
* You must make it sure its resolution and pattern cause every
instrument can have different setting
O 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
• 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.
- 16 -
Order
Command
Set response
1. Inter the 
ad 00 00
d 00 OK00x
Adjustment mode
2. Change the 
kb 00 04
b 00 OK04x (Adjust 480i Comp1 )
Source
kb 00 06  b 00 OK06x (Adjust 1080p Comp1/RGB)
3.Start Adjustment ad 00 10
4.Return the 
OKx ( Success condition )
Response
NGx ( Failed condition )
5.Read (main)
(main)
Adjustment data
ad 00 20
000000000000000000000000007c007b006dx
( sub )
(Sub)
ad 00 21
000000070000000000000000007c00830077x
6.Confirm 
ad 00 99
NG 03 00x (Failed condition)
Adjustment
NG 03 01x (Failed condition)
NG 03 02x (Failed condition)
OK 03 03x (Success condition)
7. End of Adjustment ad 00 90
d 00 OK90x
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