32LH255H (CHASSIS:LA96C) - LG TV Service Manual (repair manual). Page 11

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* USB DOWNLOAD(*.epk file download) 
1.  Put the USB Stick to the USB socket  
2.  Automatically detecting update file in USB Stick 

- If your downloaded program version in USB Stick is Low, it

didn’t work.  But your downloaded version is High, USB data
is automatically detecting 

3.  Show the message “Copying files from memory” 

4.  Updating is staring. 

5.  Updating Completed, The TV will restart automatically. 
6.  If your TV is turned on, check your updated version and Tool

option. (explain the Tool option, next stage) 

* If downloading version is more high than your TV have, TV

can lost all channel data. In this case, you have to channel
recover. if all channel data is cleared, you didn’t have a
DTV/ATV test on production line. 

* After downloading, have to adjust TOOL OPTION again. 
1. Push "Adj" key in service remote controller. 
2. Select "Tool Option 1~ 4" and Push “OK” button. 
3. Punch in the number. (Each model has their number.) 

4. Completed selecting Tool option 

4.1.1 Overview 
ADC adjustment is needed to find the optimum black level and
gain in Analog-to-Digital device and to compensate RGB
deviation. 

4.1.2 Equipment & Condition 
1) Jig (RS-232C protocol) 
2) Input : MSPG-925FS(Model : 209 ,Pattern : 65, Only

component)) 

3) RGB Adjust use internal pattern.  

4.1.3 Adjustment  
4.1.3.1 Method 
• Using RS-232, adjust items listed in 3.1 in the order shown in

“4.1.3.3”. 

4.1.3.2 Adj. protocol 

Ref.) ADC adj. RS232C Protocol_Ver1.0 

4.1.3.3 Adj. order 
• ad 00 00  [Enter ADC adj. mode] 
• ad 00 10  [Adjust 480i Comp1/1080p Comp1/1024*768 RGB] 
• ad 00 90  End adj. 

 

 

 

Model

Tool option1 

Tool option1

Tool option1  Tool option1 

37LH260H-UB

33056

1576

33056

1024

42LH260H-UB

26769

1576

33056

1024

32LH250H-UB

18499

1576

33056

1024

Protocol Command 

Set 

ack

Enter adj.

ad 00 00 

d 00 OK00x

mode

Begin adj. 

ad 00 10

Return adj.

OKx (Success)

result

NGx (Fail)

Read adj. 

(main)

(main) 

data

ad 00 20

000000000000000000000000007c007b006dx

(sub )  

(Sub) 

ad 00 21 

000000070000000000000000007c00830077x

Confirm adj. 

ad 00 99

NG 03 00x (Fail)

NG 03 01x (Fail)

NG 03 02x (Fail)

OK 03 03x (Success)

End adj. 

ad 00 90 

d 00 OK90x