DOWNLOAD LG 47LW9800-SA (CHASSIS:LJ12D) Service Manual ↓ Size: 21.05 MB | Pages: 109 in PDF or view online for FREE

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This specification sheet is applied all of the LJ12C/D/E/F/N
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. 
(3) The adjustment must be performed in the circumstance of

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

(4) The input voltage of the receiver must keep AC 100-220

V~ 50 / 60Hz.

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

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After Receive 100% Full white pattern (06CH) then
process Heat-run  

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

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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. 

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MAC Address Download 

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Adjust 480i Comp1  

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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”  

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EDID (The Extended Display Identification Data)/DDC

(Display Data Channel) download 

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Color Temperature (White Balance) Adjustment 

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Using RS-232C 

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PING Test 

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Selection Factory output option 

• Play file: Serial.exe 
• MAC Address edit 
• Input Start / End MAC address 

4.1.2.1 Communication Prot connection 

Connect: PCBA Jig-> RS-232C Port== PC-> RS-232C Port 

4.1.2.2 MAC Address Download 

• Com 1,2,3,4 and 115200(Baudrate)  
• Port connection button click(1) 

• Load button click(2) for MAC Address write.  
• Start MAC Address write button(3)   
• Check the OK Or NG  

•  Each other connection to LAN Port of IP Hub and Jig 

 

PCBA 

PC(RS-232C)

 

RS-232C Po rt

 

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•  LAN Port connection with PCB 
•  Network setting at MENU Mode of TV 
•  Setting automatic IP 
•  Setting state confirmation 

- If automatic setting is finished, you confirm IP and MAC

Address. 

4.1.5.1 Equipment setting  

1) Play the LAN Port Test PROGRAM. 
2) Input IP set up for an inspection to Test Program. 

*IP Number : 12.12.2.2 

1) Play the LAN Port Test Program. 
2) connect each other LAN Port Jack. 
3) Play Test (F9) button and confirm OK Message. 
4) remove LAN CABLE 

Adjust 3 items at 3.1 PCB assembly adjustments “adjustment
sequence” one after the order. 

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Adjustment protocol 

See ADC Adjustment RS232C Protocol_Ver1.0 

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Necessary items before Adjustment items 

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

:65) – Comp1 Mode 

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

pattern :65) – Comp1 Mode 

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

RGB-PC Mode 

* If you want more information then see the below

Adjustment method (Factory Adjustment) 

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Adjustment sequence  

• aa 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 
• xb 00 90: Endo of Adjustmennt 

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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)  

<Pic.4 Adjustment pattern : 480i / 1080p 60Hz Pattern > 

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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) 

• 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”  

• 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” 

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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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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. 

§ Edid data and Model option download (RS232) 

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Write HDMI EDID data  

• 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. 

• 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. 

Pic.3) For write EDID data, setting Jig and another instruments.

See Working Guide if you want more information about EDID
communication.  

• EDID data for Non 3DTV   (Model name = LG TV )  

- HDMI EDID table (0x1E : Physical Address)   

1) HDMI 1 Check sum : 0x7F, 0xD9 (CEA Block 0x1E :10) 
2) HDMI 2 Check sum : 0x7F, 0xC9 (CEA Block 0x1E :20) 
3) HDMI 3 Check sum : 0x7F, 0xB9 (CEA Block 0x1E :30) 
4) HDMI 4 Check sum : 0x7F, 0xA9 (CEA Block 0x1E :40) 

- Analog (RGB) EDID table  

1) RGB CheckSum : 1C 

• EDID data for 3DTV ( Model name = LG TV )   

- HDMI EDID table (0x1E : Physical Address)  

1) HDMI 1 Check sum : 0x7F, 0xCB (CEA Block 0x1E :10) 
2) HDMI 2 Check sum : 0x7F, 0xBB (CEA Block 0x1E :20) 
3) HDMI 3 Check sum : 0x7F, 0xAB (CEA Block 0x1E :30) 
4) HDMI 4 Check sum : 0x7F, 0x9B (CEA Block 0x1E :40) 

- Analog (RGB) EDID table  

1) CheckSum : 1C 

PC

VSC

B/D