DOWNLOAD LG 47LH40ED / 47LH45ED (CHASSIS:LJ92J) Service Manual ↓ Size: 5.35 MB | Pages: 76 in PDF or view online for FREE

- 10 -

This specification sheet is applied all of the LJ91D, LJ92J
LCD TV models, which produced in manufacture department
or similar LG TV factory.

1) Because this is not a hot chassis, it is not necessary to use

an isolation transformer. However, the use of isolation
transformer will help protect test instrument.  

2) Adjustment must be done in the correct order. But it is

flexible when its factory local problem occurs. . 

3) The adjustment must be performed in the circumstance of

25 ±5°C of temperature and 65±10% of relative humidity if
there is no specific designation.  

4) The input voltage of the receiver must keep 100~220V,

50/60Hz. 

5) Before adjustment, execute Heat-Run for 5 minutes.  

• After Receive 100% Full white pattern (06CH) then process

Heat-run  

(or “8. Test pattern” condition of Ez-Adjust status) 

• How to make set white pattern   

1) Press Power ON button of Service Remocon  
2) Press ADJ button of Service remocon. Select “8. Test

pattern” and, after select “White” using navigation button,
and then you can see 100% Full White pattern.    

* In this status you can maintain Heat-Run useless any

pattern generator 

* Notice: if you maintain one picture over 20 minutes

(Especially sharp distinction black with white pattern –
13Ch, or Cross hatch pattern – 09Ch) then it can appear
image stick near black level.    

• CPLD DOWNLOAD
• Adjust 480i Comp1   
• Adjust 1080p Comp1/RGB  

- If it is necessary, it can adjustment at Manufacture Line  
- You can see set adjustment status at “1. ADJUST

CHECK” of the “In-start menu”   

• EDID (The Extended Display Identification Data ) / DDC

(Display Data Channel) download  

• Color Temperature (White Balance) Adjustment 
• Make sure RS-232C control  
• Selection Factory output option 

Pin

JTAG Mode Signal Name

2

TCK

3

TMS

8

TDI

11

TDO

13

-

15

VCC

18 TO 25

GND

- 11 -

- 12 -

Adjust 3 items at 3.1 PCB assembly adjustments “4.1.3

sequence” one after the order. 

O 

Adjustment protocol

See ADC Adjustment RS232C Protocol_Ver1.0

O 

Adjustment protocol

- Pattern Generator : (MSPG-925FA)
- Adjust 480i Comp1 (MSPG-925FA : model :209 , pattern

: 65)

- Adjust 1080p Comp1/RGB(MSPG-925FA:model : 225 ,

pattern : 65)

- Adjust RGB (MSPG-925FA:model :225 , Pattern :65) –

RGB-PC Mode 

* If you want more information then see the below Adjustment
method (Factory Adjustment)

O 

Adjustment sequence

- ad 00 00 : Enter the ADC Adjustment mode.
- xb 00 40: Change the mode to Component1 (No actions) 
- ad 00 10: Adjust 480i Comp
- ad 00 10: Adjust 1080p Comp 
- xb 00 60: Change to RGB-PC mode(No action) 
- ad 00 10: Adjust 1080p RGB
- ad 00 90: End of the adjustment

Order

Command

Set response

1. Inter the 

ad 00 00

d 00 OK00x

Adjustment mode

2. Change the 

kb 00 40

b 00 OK40x (Adjust 480i Comp1/1080p Comp1)

Source

kb 00 60  b 00 OK60x (Adjust 1080p RGB)

3.Start Adjustment ad 00 10

4.Return the 

OKx ( Success condition )

Response

NGx ( Failed condition )

5.Read (main)

(main : component1 480i, RGB 1080p)

Adjustment data

ad 00 20

000000000000000000000000007c007b006dx

(main)

(main : component1 1080p) 

ad 00 30

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

- 13 -

O 

Summary : Adjustment component 480i/1080i and RGB

1080p is Gain and Black levelsetting 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”   

• 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” 

O 

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. 

O 

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.